三叠纪古太平洋俯冲: 南海南部陆缘的岩浆记录*

doi:10.11978/2025248

Abstract

Abstract:

The Nansha Block (NB), an important segment of the southeastern margin of the South China Block (SCB) during the Triassic period, preserves critical records of geodynamic and tectonic transition processes. To clarify the dynamic evolution process of the westward subduction of the Paleo-Pacific Ocean during the Triassic, Well Nanke-1 (NK-1) within this block was selected as the research target, and published research data from our team were integrated. The latest petrographic and geochemical data reveal that the rock assemblage comprises two distinct types: Type I and Type II basaltic-basaltic andesitic (BA) series and a dacitic (DA) series, which were emplaced during the early Late Triassic [(217.9 ± 3.5) to (218.6 ± 3.2) Ma]. These three series exhibit typical geochemical signatures of arc magmatism. We propose that the flat-slab subduction of the Paleo-Pacific Plate transported significant volumes of the continental crust frontal accretionary wedge to depths sufficient for its remelting. This process generated substantial melts/fluids, which, upon infiltration into the asthenosphere or metasomatism of the lithospheric mantle on the side of the continental margin, induced mantle melting that formed type I and type II basaltic magma chambers (BA series). With continued subduction, the leading edge of the slab experienced flexural deformation, which induced upwelling of the adjacent asthenosphere on the continental side. This upwelling, in turn, led to persistent underplating, triggering partial melting of the mafic lower crust and generating the DA series dacitic magma chambers. The sustained ascent of mantle-derived magmas during this period resulted in significant lithospheric thinning beneath the study area. This thinning not only facilitated the eventual rifting of the NB from the SCB but also preconditioned the region for the subsequent development of early intracontinental rifting during the later seafloor spreading stage of the South China Sea.

Key words: Paleo-Pacific tectonic domain, Tethyan tectonic domain, rift-related volcanic rocks, Nansha Block, South China Block

CLC Number:

P736.1

WANG Chan, LIU Hao, XU Weihai. Triassic subduction of the Paleo-Pacific: magmatic records from the southern continental margin of the South China Sea^*[J].Journal of Tropical Oceanography, 2026, 45(5): 53-79.

Figures/Tables 15

Fig. 1

Fig. 2

Fig. 3

Appendix Tab. S1

Major element data of volcanic rocks from Well NK-1 in the Nansha Block, southern South China Sea (unit: wt%)"

样品编号	岩性	深度/m	SiO₂	TiO₂	Al₂O₃	TFe₂O₃	MgO	MnO	CaO	Na₂O	K₂O	P₂O₅	LOI	Total	A/CNK	A/NK	Mg#	SI	DI	参考文献
NK-1-V₂-44	II类BA	1250.85	47.62	0.63	18.31	9.03	6.20	0.16	9.24	2.04	2.17	0.06	3.96	99.42	0.81	3.20	0.58	32.87	31.72	Wei等 (2022)
NK-1-V₂-52	II类BA	1262.95	46.41	0.61	18.85	8.86	6.03	0.17	9.35	1.71	2.91	0.05	4.44	99.39	0.82	3.16	0.57	31.83	33.54
NK-1-V₂-53	II类BA	1263.39	46.77	0.64	19.02	9.10	5.91	0.15	9.64	1.49	2.86	0.05	4.16	99.79	0.82	3.42	0.56	31.48	31.06
NK-1-V₂-125	II类BA	1366.85	47.07	0.60	14.77	9.61	11.01	0.19	8.69	1.79	2.15	0.08	3.60	99.56	0.70	2.80	0.69	45.99	29.23
NK-1-V₂-145	I类BA	1404.25	48.32	1.49	14.09	12.66	7.46	0.20	10.16	2.69	0.86	0.14	1.32	99.38	0.59	2.63	0.54	32.68	28.61
NK-1-V₂-146	I类BA	1405.75	48.77	1.52	13.83	12.62	6.86	0.20	10.24	3.11	0.32	0.15	1.68	99.31	0.57	2.53	0.52	31.06	29.19
NK-1-V₂-147	I类BA	1407.35	49.02	1.29	14.69	11.21	7.18	0.19	11.96	2.03	0.46	0.11	1.48	99.62	0.57	3.83	0.56	35.70	22.49
NK-1-V₂-148	I类BA	1407.70	48.12	1.96	14.34	12.82	6.07	0.16	11.21	2.52	0.98	0.23	1.58	99.99	0.56	2.75	0.48	28.18	27.85
NK-1-V₂-149	I类BA	1409.35	49.21	1.15	14.99	10.29	7.65	0.17	12.19	1.84	0.66	0.10	1.76	100.02	0.58	4.00	0.60	38.74	21.66
NK-1-V₂-150	I类BA	1411.00	49.41	1.28	14.79	11.02	6.95	0.18	11.73	1.99	0.63	0.12	1.60	99.70	0.58	3.74	0.56	35.02	23.93
NK-1-V₂-151	I类BA	1412.95	48.64	1.49	13.79	12.53	7.22	0.21	10.85	2.40	0.67	0.13	1.38	99.31	0.57	2.95	0.53	32.84	25.65
NK-1-V₂-154	II类BA	1417.20	48.96	0.62	18.47	8.91	6.26	0.16	9.68	2.32	0.96	0.07	2.96	99.37	0.82	3.80	0.58	35.05	27.60
NK-1-V₂-170	I类BA	1444.69	50.55	0.93	18.26	10.25	4.37	0.21	8.39	2.60	0.80	0.08	3.80	100.23	0.90	3.55	0.46	25.19	34.17
NK-1-V₂-174	I类BA	1450.52	48.43	1.42	14.09	12.94	7.27	0.24	9.78	2.92	1.13	0.11	1.00	99.32	0.59	2.34	0.53	31.04	32.19
NK-1-V₂-175	I类BA	1451.21	49.98	1.71	12.45	14.02	7.16	0.21	8.01	3.80	0.48	0.13	1.48	99.43	0.58	1.84	0.50	29.15	36.06
NK-1-V₂-176	I类BA	1452.70	48.65	1.34	14.15	12.30	7.49	0.20	10.96	2.38	0.72	0.11	1.08	99.39	0.57	3.01	0.55	33.93	25.08
NK-1-V₂-177	I类BA	1454.45	48.50	1.44	14.09	12.89	7.12	0.20	10.28	3.10	0.16	0.12	1.44	99.33	0.59	2.67	0.52	31.77	27.99
NK-1-V₂-193	I类BA	1483.00	47.36	1.69	14.57	12.75	6.78	0.22	8.96	2.95	1.18	0.19	2.75	99.40	0.65	2.37	0.51	29.69	33.34
NK-1-V₂-25	DA	1225.37	67.02	0.90	14.08	5.65	1.15	0.09	2.55	3.61	3.90	0.24	0.84	100.03	0.95	1.39	0.29	8.20	78.62
NK-1-V₂-30	DA	1231.46	67.32	0.87	14.09	5.49	1.16	0.09	2.28	3.83	4.05	0.23	0.58	100.00	0.95	1.32	0.30	8.13	80.29
NK-1-V₂-38	DA	1244.18	67.29	0.78	14.06	5.18	0.95	0.08	2.37	3.32	4.67	0.20	0.82	99.73	0.95	1.33	0.27	6.85	80.72
NK-1-V₂-67	DA	1282.55	66.23	0.92	13.95	5.89	1.27	0.08	2.62	3.64	3.90	0.24	0.82	99.56	0.93	1.37	0.30	8.82	78.10
NK-1-V₂-86	DA	1312.35	67.85	0.79	14.39	5.02	0.83	0.09	2.21	4.43	3.65	0.19	0.83	100.28	0.94	1.28	0.25	6.07	82.23
NK-1-V₂-102	DA	1333.04	67.93	0.82	14.12	5.14	0.87	0.07	2.49	4.04	3.63	0.21	0.56	99.87	0.93	1.33	0.25	6.48	80.75
NK-1-V₂-121	DA	1360.40	67.01	0.89	13.74	5.51	1.66	0.09	3.57	4.14	1.88	0.24	1.30	100.02	0.90	1.55	0.37	12.87	73.50
NK-1-V₂-140	DA	1396.32	65.67	0.90	14.38	5.86	1.00	0.10	3.62	3.43	3.86	0.23	0.76	99.81	0.88	1.46	0.25	7.22	75.37
NK-1-V₂-173	DA	1449.00	67.07	0.81	14.05	5.16	1.07	0.09	1.57	3.66	5.39	0.19	0.20	99.26	0.95	1.18	0.29	7.11	84.40
NK-1-V₂-178	DA	1456.15	66.93	0.79	14.72	5.04	0.72	0.08	1.82	4.47	4.76	0.19	0.22	99.74	0.93	1.18	0.22	4.88	84.97
NK-1-V₂-194	DA	1483.60	67.11	0.91	14.07	5.80	1.04	0.08	3.61	5.06	1.38	0.25	0.38	99.69	0.86	1.43	0.26	8.02	75.87
NK-1-V₂-197	DA	1489.00	67.39	0.77	14.45	4.95	0.87	0.08	2.12	4.23	3.84	0.18	0.50	99.39	0.96	1.30	0.26	6.37	82.06
NK-1-V₃-001	DA	1485.00	65.80	0.82	14.02	6.48	0.87	0.19	2.64	3.83	4.00	0.18	0.22	99.05	0.91	1.32	0.21	5.86	78.79	Miao等 (2021)
NK-1-V₃-007	DA	1493.41	65.43	0.88	14.04	6.40	1.09	0.17	2.59	3.39	4.45	0.21	0.56	99.21	0.93	1.35	0.25	7.27	78.03
NK-1-V₃-008	DA	1494.81	65.80	0.97	13.91	6.38	0.90	0.15	3.35	3.62	3.70	0.22	0.51	99.51	0.87	1.40	0.22	6.31	76.46
NK-1-V₂-201	DA	1496.05	66.11	0.94	14.31	6.10	1.16	0.11	2.81	3.24	4.31	0.25	0.42	99.75	0.95	1.43	0.27	8.00	76.87
NK-1-V₃-010	DA	1497.61	65.91	0.91	14.10	6.31	0.94	0.14	2.98	3.68	4.00	0.21	0.65	99.83	0.89	1.36	0.23	6.44	77.72
NK-1-V₃-012	DA	1500.41	66.78	0.76	14.30	5.92	0.83	0.16	2.33	3.80	4.34	0.14	0.45	99.81	0.94	1.30	0.22	5.69	80.48
NK-1-V₃-015	DA	1504.62	66.62	0.78	14.28	5.86	0.79	0.15	2.57	3.88	4.17	0.16	0.37	99.63	0.92	1.31	0.21	5.48	80.08	Miao等 (2021)
NK-1-V₃-019	DA	1510.22	67.08	0.77	14.34	5.77	0.77	0.15	2.28	4.07	4.10	0.15	0.57	100.05	0.94	1.29	0.21	5.34	81.20
NK-1-V₃-031	DA	1527.04	66.10	0.84	13.94	6.00	0.93	0.15	2.58	3.39	4.62	0.19	0.58	99.32	0.91	1.32	0.24	6.36	79.48
NK-1-V₃-033	DA	1529.84	66.76	0.82	14.24	6.26	0.89	0.17	2.32	4.32	3.65	0.16	0.59	100.18	0.93	1.29	0.22	6.02	80.23
NK-1-V₃-035	DA	1532.64	65.93	0.84	14.11	6.41	0.99	0.16	2.53	3.66	4.50	0.17	0.50	99.80	0.91	1.29	0.23	6.50	79.27
NK-1-V₃-037	DA	1535.45	65.82	0.93	14.19	6.42	0.99	0.15	2.92	3.62	4.10	0.21	0.61	99.96	0.90	1.36	0.23	6.70	77.48
NK-1-V₃-038	DA	1536.85	65.91	0.90	14.04	6.41	0.95	0.14	2.84	3.77	3.95	0.19	0.56	99.66	0.90	1.34	0.23	6.45	78.10
NK-1-V₃-042	DA	1542.45	65.41	0.89	14.28	6.39	0.96	0.15	2.68	3.83	4.09	0.19	0.53	99.40	0.91	1.33	0.23	6.43	78.41
NK-1-V₃-045	DA	1546.66	66.23	0.81	14.24	5.99	0.88	0.14	2.58	3.97	3.97	0.19	0.53	99.53	0.92	1.31	0.23	6.07	79.60
NK-1-V₃-050	DA	1553.66	65.97	0.84	14.26	6.56	0.95	0.17	2.46	3.95	4.02	0.19	0.64	100.01	0.93	1.31	0.22	6.28	79.02
NK-1-V₃-052	DA	1556.46	65.78	0.89	14.17	6.41	0.95	0.15	2.88	3.87	3.84	0.20	0.62	99.76	0.90	1.35	0.23	6.45	77.88
NK-1-V₃-059	DA	1566.27	64.57	0.91	14.22	6.62	0.95	0.16	3.33	3.68	4.09	0.22	0.72	99.47	0.86	1.36	0.22	6.34	76.42
NK-1-V₃-062	DA	1570.48	67.18	0.76	14.36	5.76	0.78	0.14	2.42	3.85	4.19	0.15	0.42	100.01	0.94	1.32	0.21	5.46	80.45
NK-1-V₃-065	DA	1574.68	65.90	0.87	14.27	6.32	0.93	0.15	2.57	4.21	3.70	0.20	0.55	99.67	0.91	1.30	0.23	6.27	79.21
NK-1-V₃-067	DA	1577.48	65.30	0.91	14.36	6.41	1.10	0.14	2.42	4.06	3.89	0.22	0.84	99.65	0.94	1.32	0.25	7.28	78.74
NK-1-V₃-069	DA	1580.29	65.77	0.88	14.34	6.32	1.48	0.14	1.88	3.35	4.46	0.19	0.98	99.79	1.04	1.39	0.32	9.71	78.78
NK-1-V₃-072	DA	1584.49	65.83	0.87	14.24	6.45	0.91	0.16	2.31	4.21	3.79	0.19	0.67	99.63	0.93	1.29	0.22	6.06	79.83
NK-1-V₃-075	DA	1588.69	65.36	0.95	14.24	6.78	1.10	0.16	2.50	3.81	4.21	0.21	0.51	99.83	0.93	1.31	0.24	7.08	78.27
NK-1-V₃-077	DA	1591.50	65.64	0.91	14.36	6.49	1.01	0.15	2.63	3.80	4.06	0.19	0.48	99.72	0.93	1.35	0.24	6.72	78.07
NK-1-V₃-082	DA	1598.50	66.00	0.88	14.10	6.42	0.97	0.16	2.47	4.02	3.64	0.17	0.85	99.68	0.94	1.33	0.23	6.60	78.76
NK-1-V₃-087	DA	1605.51	65.86	0.87	14.22	6.32	0.94	0.14	2.87	3.78	3.72	0.19	0.81	99.72	0.92	1.39	0.23	6.53	77.46
NK-1-V₃-089	DA	1608.31	66.30	0.87	14.36	6.21	1.07	0.14	2.34	4.20	3.58	0.21	0.56	99.84	0.95	1.33	0.26	7.26	79.13
NK-1-V₃-099	DA	1622.32	65.23	0.90	14.34	6.37	0.97	0.14	2.67	4.58	3.77	0.22	0.44	99.63	0.87	1.23	0.23	6.31	79.90
NK-1-V₃-107	DA	1633.54	65.70	0.90	14.32	6.54	0.99	0.16	2.59	3.81	4.07	0.20	0.57	99.85	0.93	1.34	0.23	6.57	78.26
NK-1-V₃-109	DA	1636.34	65.92	0.85	14.38	6.03	0.93	0.13	2.61	4.13	3.63	0.20	0.60	99.41	0.93	1.34	0.23	6.46	78.92
NK-1-V₃-116	DA	1646.15	66.42	0.86	14.32	6.13	0.88	0.14	2.90	3.90	3.92	0.18	0.72	100.37	0.90	1.34	0.22	6.07	78.47
NK-1-V₃-118	DA	1648.95	65.68	0.87	14.24	6.50	0.94	0.16	2.59	3.90	3.91	0.19	0.68	99.66	0.93	1.34	0.22	6.31	78.46
NK-1-V₃-120	DA	1651.75	67.30	0.86	14.29	6.03	0.84	0.12	2.33	4.09	3.39	0.20	0.67	100.12	0.98	1.37	0.22	5.99	79.57
NK-1-V₃-122	DA	1654.55	66.39	0.74	14.22	5.60	0.70	0.13	3.13	3.83	3.99	0.17	0.71	99.61	0.87	1.34	0.20	5.07	79.05
NK-1-V₃-126	DA	1660.16	66.83	0.73	14.32	5.65	0.78	0.13	2.50	3.80	4.34	0.17	0.58	99.83	0.92	1.31	0.22	5.46	80.60
NK-1-V₃-130	DA	1665.76	66.50	0.73	14.16	6.02	0.78	0.18	2.49	3.56	4.42	0.14	0.54	99.52	0.93	1.33	0.20	5.39	79.77
NK-1-V₃-133	DA	1669.97	66.98	0.75	14.43	5.49	0.69	0.12	1.91	4.18	3.69	0.16	0.62	99.02	1.01	1.33	0.20	5.01	82.07
NK-1-V₃-135	DA	1672.77	65.89	0.75	14.14	6.32	0.76	0.19	2.49	3.80	4.20	0.14	0.46	99.14	0.92	1.31	0.19	5.15	79.66
NK-1-V₃-139	DA	1678.38	66.81	0.73	14.22	5.70	0.69	0.15	2.56	3.81	4.24	0.14	0.65	99.70	0.92	1.31	0.19	4.88	80.56
NK-1-V₃-143	DA	1683.98	67.28	0.70	14.02	5.39	0.73	0.12	2.52	3.79	4.11	0.15	0.67	99.48	0.92	1.31	0.21	5.32	80.97
NK-1-V₃-145	DA	1686.78	66.22	0.77	14.24	5.76	0.85	0.13	2.86	3.68	4.12	0.16	0.45	99.24	0.91	1.35	0.23	6.02	78.80

Appendix Tab. S1

Appendix Tab. S2

Trace element data of volcanic rocks from Well NK-1 in the Nansha Block, southern South China Sea (unit: μg·g-1)"

样品编号	岩性	深度/m	Sc	V	Cr	Co	Ni	Ga	Rb	Sr	Y	Zr	Nb	Cs	Ba	Hf	Ta	Pb	Th	U	Cu	Zn	参考文献
NK-1-V₂-44	II类BA	1250.85	29.23	211.13	42.34	30.39	23.52	1.00	102.13	214.69	12.98	33.27	0.79	0.52	203.94	0.93	0.05	3.96	0.57	0.20	45.03	63.84	Wei等 (2022)
NK-1-V₂-52	II类BA	1262.95	31.77	227.57	48.30	28.34	11.48	10.87	149.13	182.99	12.10	30.54	1.07	0.43	282.22	0.85	0.06	10.47	0.60	0.17	15.16	66.07
NK-1-V₂-53	II类BA	1263.39	32.87	245.95	50.77	29.28	12.30	11.48	150.08	212.13	13.67	34.63	1.23	0.60	230.17	0.97	0.07	5.94	0.70	0.21	21.74	74.77
NK-1-V₂-125	II类BA	1366.85	31.96	197.80	465.08	42.63	159.04	9.87	117.73	147.77	14.97	50.74	0.94	0.77	187.65	1.45	0.06	5.61	1.23	0.37	54.94	68.49
NK-1-V₂-145	I类BA	1404.25	46.72	312.89	167.79	46.09	61.99	12.52	43.19	165.27	24.06	80.75	5.49	0.55	126.41	2.08	0.33	3.61	0.55	0.14	101.17	89.36
NK-1-V₂-146	I类BA	1405.75	44.59	310.54	134.25	43.03	45.21	12.60	13.49	183.75	25.40	88.41	6.08	0.19	60.82	2.37	0.40	2.52	0.89	0.20	96.67	90.83
NK-1-V₂-147	I类BA	1407.35	46.37	280.71	164.73	42.17	54.38	12.00	23.29	155.29	20.76	72.26	5.02	0.20	72.68	1.90	0.31	1.90	0.66	0.15	102.95	76.86
NK-1-V₂-148	I类BA	1407.70	49.57	370.90	199.96	48.87	51.29	14.32	49.44	176.70	25.69	107.32	7.60	0.26	93.55	2.45	0.44	2.72	1.12	0.26	91.22	97.09
NK-1-V₂-149	I类BA	1409.35	48.00	282.71	237.33	41.99	61.17	11.98	39.44	170.17	18.78	65.14	4.31	0.26	71.86	1.65	0.27	3.62	0.63	0.15	101.84	105.82
NK-1-V₂-150	I类BA	1411.00	115.13	614.29	310.11	61.95	80.10	18.90	50.73	199.87	26.50	92.52	6.04	0.23	64.60	1.29	0.20	1.26	0.33	0.07	168.39	118.66
NK-1-V₂-151	I类BA	1412.95	40.56	301.88	135.49	44.07	52.23	12.53	30.92	171.00	24.41	86.72	5.85	0.29	93.28	2.59	0.43	4.68	0.90	0.22	89.85	125.35
NK-1-V₂-154	II类BA	1417.20	28.96	205.76	33.19	30.50	22.47	10.60	40.36	241.28	12.94	34.94	0.75	0.37	124.28	1.02	0.07	3.25	0.57	0.22	35.25	55.98
NK-1-V₂-174	I类BA	1450.52	47.04	334.41	169.10	49.38	59.27	13.39	65.32	187.04	23.73	73.81	4.96	0.78	149.47	1.94	0.31	4.87	0.56	0.15	92.53	99.74
NK-1-V₂-175	I类BA	1451.21	47.05	342.51	89.30	63.51	48.68	10.81	24.67	82.49	26.97	86.32	5.91	0.36	83.46	2.25	0.36	1.50	0.65	0.15	114.34	123.70
NK-1-V₂-176	I类BA	1452.70	60.67	384.55	231.22	58.87	75.17	15.49	52.10	186.36	29.12	90.58	6.16	0.51	146.25	2.36	0.38	2.46	0.67	0.16	118.58	110.18
NK-1-V₂-177	I类BA	1454.45	43.43	301.25	136.89	45.52	53.46	12.33	4.99	154.19	23.51	76.13	5.19	0.08	50.08	1.99	0.32	2.67	0.58	0.14	85.70	92.98
NK-1-V₂-193	I类BA	1483.00	116.46	790.91	259.33	75.97	94.37	26.70	83.90	243.67	40.35	133.13	11.05	0.47	247.32	1.93	0.38	6.79	0.85	0.18	208.78	185.54
NK-1-V₂-25	DA	1225.37	11.71	35.61	16.92	7.33	2.81	15.49	131.42	132.28	54.46	470.48	29.41	0.72	884.69	11.01	1.80	26.78	19.13	3.88	16.68	84.49
NK-1-V₂-30	DA	1231.46	11.46	31.27	15.62	6.49	2.25	15.62	146.96	125.91	53.15	480.88	29.44	0.73	850.99	11.13	1.79	20.41	18.62	3.81	6.39	83.05
NK-1-V₂-38	DA	1244.18	10.05	25.72	14.16	6.00	1.87	15.32	157.92	125.79	53.18	485.62	29.01	0.65	987.83	11.30	1.80	28.18	18.60	3.78	8.95	75.56
NK-1-V₂-67	DA	1282.55	13.50	38.53	14.61	8.53	2.35	18.80	159.88	155.19	68.21	581.98	37.70	0.80	961.88	14.29	2.51	19.37	25.56	5.44	10.06	101.18
NK-1-V₂-86	DA	1312.35	10.76	26.22	14.32	5.85	1.76	15.70	127.35	123.16	52.61	487.67	29.75	0.42	791.33	11.24	1.83	23.57	19.37	3.90	10.76	78.43
NK-1-V₂-102	DA	1333.04	10.91	27.93	14.27	6.14	2.24	15.01	114.44	125.60	54.07	504.39	30.09	0.31	696.87	11.67	1.82	44.66	18.47	3.77	11.41	61.06
NK-1-V₂-121	DA	1360.40	11.59	33.90	14.37	6.85	2.73	15.10	86.01	196.13	51.58	460.95	28.70	0.67	368.44	10.60	1.77	20.79	18.05	3.59	12.54	74.76
NK-1-V₂-140	DA	1396.32	10.53	47.27	15.35	6.73	2.30	16.38	110.00	163.87	48.06	424.23	27.71	0.40	674.24	9.84	1.73	32.70	17.15	3.64	10.24	85.29
NK-1-V₂-173	DA	1449.00	28.82	60.32	29.77	11.60	3.01	23.80	291.45	146.65	74.59	677.63	40.16	0.42	1362.02	9.03	1.35	16.68	10.49	2.04	12.54	140.48
NK-1-V₂-178	DA	1456.15	11.23	33.10	11.82	6.10	1.73	18.30	182.85	135.98	64.50	574.72	35.01	0.48	1364.49	14.99	2.44	43.23	26.30	5.35	14.54	105.99
NK-1-V₂-194	DA	1483.60	30.49	77.53	32.73	12.58	4.08	23.53	102.70	245.60	69.70	574.61	37.24	0.42	280.41	7.94	1.31	13.10	9.75	1.88	109.49	117.00
NK-1-V₂-197	DA	1489.00	29.69	62.51	30.51	10.36	3.21	26.78	236.46	194.06	76.45	669.06	40.69	0.48	1302.42	8.78	1.38	14.40	11.11	2.14	16.09	127.48
NK-1-V₃-001	DA	1485.00	9.35	24.93	47.08	6.89	17.42	18.04	127.90	145.20	49.80	387.40	26.86	0.65	727.30	10.06	1.62	21.02	17.29	3.93	-	-	Miao等 (2021)
NK-1-V₃-007	DA	1493.41	10.32	28.07	6.17	7.11	2.61	19.36	163.10	133.00	51.90	400.80	28.61	1.06	861.60	10.44	1.73	16.95	17.94	3.99	-	-
NK-1-V₃-008	DA	1494.81	10.64	27.54	15.52	7.00	2.56	19.49	137.00	159.10	50.55	399.40	28.49	0.90	567.70	10.15	1.69	16.15	16.93	3.91	-	-
NK-1-V₂-201	DA	1496.05	15.33	42.54	18.12	9.14	2.59	18.99	182.75	161.63	64.78	552.80	36.07	0.49	930.47	12.75	2.16	38.55	21.25	4.25	-	-
NK-1-V₃-010	DA	1497.61	11.24	31.88	5.63	7.56	2.42	21.20	163.70	162.50	56.14	406.50	30.44	1.03	728.40	10.73	1.83	19.51	18.83	4.26	-	-
NK-1-V₃-012	DA	1500.41	8.87	22.23	6.30	5.77	2.76	18.67	163.60	122.00	46.89	376.10	25.81	1.30	896.40	10.08	1.62	20.93	17.47	4.00	-	-
NK-1-V₃-015	DA	1504.62	10.07	26.64	19.75	6.71	2.87	21.02	175.40	142.70	54.58	412.00	30.42	1.29	928.10	10.76	1.82	23.89	19.61	4.51	-	-
NK-1-V₃-019	DA	1510.22	10.20	26.18	5.65	6.60	2.57	21.43	181.60	139.70	55.69	432.30	32.08	1.63	921.60	11.74	1.98	25.29	21.42	4.86	-	-
NK-1-V₃-031	DA	1527.04	11.09	30.24	18.80	7.42	2.74	21.65	188.50	166.90	60.24	463.00	33.06	1.23	1208.10	11.97	1.97	26.85	20.86	4.85	-	-	Miao等 (2021)
NK-1-V₃-033	DA	1529.84	10.09	27.08	22.87	7.03	2.88	19.56	152.50	145.00	54.45	425.70	29.99	1.14	859.80	11.41	1.87	22.01	19.92	4.57	-	-
NK-1-V₃-035	DA	1532.64	10.38	28.13	5.59	7.16	2.67	19.92	168.80	144.60	53.27	411.50	29.39	1.20	921.00	10.84	1.76	22.29	18.48	4.29	-	-
NK-1-V₃-037	DA	1535.45	11.02	31.20	5.32	7.28	2.40	20.53	166.60	152.80	54.13	396.50	29.37	1.21	785.70	10.63	1.80	23.44	18.63	4.23	-	-
NK-1-V₃-038	DA	1536.85	11.32	32.19	17.52	7.76	2.92	21.71	168.20	168.40	56.23	417.60	30.86	1.19	792.50	11.08	1.86	24.55	19.25	4.44	-	-
NK-1-V₃-042	DA	1542.45	11.06	29.47	5.55	7.28	2.41	20.66	166.60	141.80	52.96	384.60	28.72	1.19	751.80	10.19	1.75	21.84	18.28	4.10	-	-
NK-1-V₃-045	DA	1546.66	9.53	25.84	5.50	6.55	2.58	20.00	150.50	147.10	52.31	393.80	29.56	1.02	869.10	10.74	1.78	22.72	19.22	4.42	-	-
NK-1-V₃-050	DA	1553.66	10.43	28.56	26.86	7.05	3.24	19.98	157.50	142.60	51.91	402.00	29.34	0.99	882.60	10.97	1.79	24.14	18.71	4.35	-	-
NK-1-V₃-052	DA	1556.46	10.11	28.50	6.08	6.72	2.25	19.56	140.90	143.50	49.56	373.90	27.58	0.87	673.00	9.88	1.67	20.37	16.93	3.88	-	-
NK-1-V₃-059	DA	1566.27	11.07	31.88	23.00	7.56	2.92	21.48	157.10	168.90	53.67	393.50	29.34	1.03	765.90	10.28	1.78	23.85	18.05	4.19	-	-
NK-1-V₃-062	DA	1570.48	9.65	25.39	21.37	6.17	2.77	20.94	165.90	159.30	53.20	402.10	29.48	1.17	1068.60	10.81	1.83	23.47	19.77	4.50	-	-
NK-1-V₃-065	DA	1574.68	9.76	27.01	15.42	6.64	2.40	18.57	135.60	126.60	49.54	370.20	27.19	1.02	711.50	9.62	1.60	20.48	16.98	4.40	-	-
NK-1-V₃-067	DA	1577.48	12.23	34.62	6.02	8.19	2.71	22.59	176.40	142.80	60.40	437.50	33.52	1.03	914.90	11.54	2.03	22.75	20.45	4.69	-	-
NK-1-V₃-069	DA	1580.29	10.79	29.19	13.07	7.11	2.25	19.60	183.50	111.60	54.50	406.60	29.62	1.00	1079.60	10.67	1.78	17.67	18.77	4.25	-	-
NK-1-V₃-072	DA	1584.49	10.97	31.92	24.65	7.56	3.09	20.28	154.10	125.40	55.11	420.70	30.58	0.85	804.70	11.04	1.87	19.24	19.84	4.42	-	-
NK-1-V₃-075	DA	1588.69	12.24	33.32	19.79	8.17	3.12	21.86	169.30	142.50	57.23	418.50	32.39	1.26	940.80	11.02	1.90	23.07	19.07	4.38	-	-
NK-1-V₃-077	DA	1591.50	12.15	34.04	6.72	8.16	2.82	21.78	171.70	147.20	57.98	432.10	31.79	1.31	951.80	11.33	1.92	25.44	19.59	4.58	-	-
NK-1-V₃-082	DA	1598.50	11.49	30.42	6.71	7.44	2.65	21.21	146.70	143.40	56.15	425.80	31.49	1.06	829.50	11.18	1.88	21.87	19.57	4.50	-	-
NK-1-V₃-087	DA	1605.51	11.36	30.53	18.76	7.50	2.71	21.20	136.80	167.50	55.40	410.50	30.58	1.01	760.50	10.82	1.83	23.39	18.86	4.39	-	-
NK-1-V₃-089	DA	1608.31	10.76	29.56	15.16	7.20	3.04	19.82	132.40	134.80	54.33	404.70	30.58	0.93	779.60	10.95	1.85	22.08	19.27	4.43	-	-
NK-1-V₃-099	DA	1622.32	11.99	31.98	15.17	8.08	2.84	21.44	156.00	108.40	58.89	427.30	32.18	1.24	893.50	11.55	1.95	22.09	20.18	4.73	-	-
NK-1-V₃-107	DA	1633.54	11.44	32.52	6.58	7.97	2.80	21.27	169.00	139.40	56.93	421.40	31.06	1.27	962.10	11.22	1.86	23.05	19.54	4.47	-	-
NK-1-V₃-109	DA	1636.34	11.14	30.43	5.59	7.31	2.45	20.70	133.00	152.50	55.99	422.50	30.33	1.21	958.70	11.09	1.84	20.87	19.24	4.44	-	-
NK-1-V₃-116	DA	1646.15	9.59	26.58	14.18	6.30	2.28	18.63	133.30	148.80	47.43	357.30	26.85	0.94	697.10	9.55	1.62	21.79	16.64	3.87	-	-
NK-1-V₃-118	DA	1648.95	11.14	30.64	23.87	7.56	3.12	21.10	158.40	158.90	56.08	425.10	30.77	1.21	839.30	11.15	1.90	20.93	19.64	4.44	-	-
NK-1-V₃-120	DA	1651.75	11.49	31.44	15.70	7.85	2.79	21.96	137.80	124.30	58.20	427.50	31.77	0.84	656.50	11.24	1.94	20.70	19.94	4.58	-	-
NK-1-V₃-122	DA	1654.55	9.67	24.95	15.70	6.11	2.68	20.66	159.10	159.80	53.70	405.70	29.86	1.31	734.70	10.77	1.81	32.09	19.78	4.55	-	-
NK-1-V₃-126	DA	1660.16	9.89	24.94	17.84	6.70	2.55	21.20	180.00	151.20	54.92	422.70	30.57	1.89	913.00	11.17	1.87	24.53	19.94	4.65	-	-
NK-1-V₃-130	DA	1665.76	9.86	25.84	7.44	6.61	2.96	21.62	190.90	155.50	54.91	418.00	30.55	2.05	952.70	11.19	1.85	26.12	20.82	4.77	-	-
NK-1-V₃-133	DA	1669.97	9.48	24.51	12.84	5.96	2.43	20.49	146.50	166.20	51.06	394.70	28.47	1.45	654.30	10.53	1.75	23.28	19.29	4.37	-	-
NK-1-V₃-135	DA	1672.77	9.43	25.33	34.32	6.54	3.58	20.73	166.80	153.10	51.67	429.70	29.19	1.69	874.90	10.94	1.78	24.41	19.14	4.43	-	-
NK-1-V₃-139	DA	1678.38	8.60	21.99	20.60	5.56	2.56	19.00	162.60	133.60	47.27	367.40	26.53	1.58	782.40	9.65	1.62	22.24	17.92	4.08	-	-
NK-1-V₃-143	DA	1683.98	9.10	22.94	15.32	5.78	2.29	19.98	159.10	152.10	53.19	407.40	29.43	1.48	779.90	10.86	1.81	23.48	19.80	4.67	-	-
NK-1-V₃-145	DA	1686.78	9.43	24.60	14.79	6.02	2.27	20.00	161.20	156.20	49.31	392.60	27.68	1.36	770.60	10.19	1.66	26.38	17.77	4.10	-	-

Appendix Tab. S2

Appendix Tab. S3

Rare earth element data of volcanic rocks from Well NK-1 in the Nansha Block, southern South China Sea (unit: μg·g-1)"

样品编号	岩性	深度/m	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Y	∑REE	LREE	HREE	LREE/ HREE	δEu	δCe	参考文献
NK-1-V₂-44	II类BA	1250.85	3.09	6.98	1.03	5.03	1.48	0.64	1.83	0.33	2.18	0.45	1.33	0.21	1.38	0.22	12.98	26.17	18.26	20.89	0.87	1.20	0.96	Wei等 (2022)
NK-1-V₂-52	II类BA	1262.95	3.19	6.86	0.98	4.69	1.36	0.56	1.62	0.30	2.03	0.43	1.26	0.20	1.31	0.20	12.10	24.99	17.65	19.44	0.91	1.16	0.95
NK-1-V₂-53	II类BA	1263.39	3.68	7.88	1.12	5.32	1.54	0.60	1.87	0.34	2.30	0.48	1.42	0.22	1.51	0.22	13.67	28.50	20.14	22.03	0.91	1.07	0.95
NK-1-V₂-125	II类BA	1366.85	5.32	11.65	1.68	7.69	2.05	0.74	2.33	0.40	2.59	0.54	1.59	0.25	1.69	0.24	14.97	38.76	29.13	24.60	1.18	1.03	0.96
NK-1-V₂-145	I类BA	1404.25	5.69	13.74	2.08	10.29	3.04	1.13	3.67	0.65	4.31	0.87	2.47	0.38	2.46	0.35	24.06	51.13	35.96	39.23	0.92	1.03	0.98
NK-1-V₂-146	I类BA	1405.75	7.02	16.58	2.45	11.80	3.36	1.25	4.12	0.73	4.56	0.95	2.71	0.40	2.61	0.38	25.40	58.93	42.46	41.88	1.01	1.03	0.98
NK-1-V₂-147	I类BA	1407.35	5.43	12.83	1.91	9.12	2.67	1.00	3.16	0.57	3.68	0.76	2.15	0.33	2.14	0.30	20.76	46.06	32.96	33.87	0.97	1.05	0.98
NK-1-V₂-148	I类BA	1407.70	9.29	21.33	3.09	14.84	3.82	1.43	4.38	0.73	4.56	0.87	2.48	0.36	2.27	0.33	25.69	69.78	53.81	41.66	1.29	1.07	0.98
NK-1-V₂-149	I类BA	1409.35	4.93	11.54	1.70	8.28	2.37	0.91	2.89	0.51	3.27	0.67	1.91	0.29	1.87	0.28	18.78	41.43	29.73	30.47	0.98	1.06	0.98
NK-1-V₂-150	I类BA	1411.00	5.28	11.68	1.71	8.41	2.29	0.83	2.57	0.46	2.92	0.57	1.57	0.24	1.49	0.21	26.50	40.24	30.20	36.54	0.83	1.05	0.95
NK-1-V₂-151	I类BA	1412.95	6.87	16.29	2.43	11.63	3.37	1.29	4.18	0.75	4.79	0.99	2.90	0.43	2.77	0.41	24.41	59.11	41.88	41.64	1.01	1.05	0.98
NK-1-V₂-154	II类BA	1417.20	3.33	7.41	1.08	5.20	1.49	0.61	1.80	0.33	2.23	0.46	1.35	0.22	1.46	0.22	12.94	27.20	19.13	21.02	0.91	1.13	0.96
NK-1-V₂-174	I类BA	1450.52	5.17	12.56	1.93	9.63	2.85	1.06	3.47	0.63	4.10	0.83	2.44	0.37	2.35	0.35	23.73	47.74	33.20	38.28	0.87	1.03	0.98
NK-1-V₂-175	I类BA	1451.21	6.10	14.77	2.24	11.09	3.21	0.99	3.99	0.72	4.71	0.96	2.80	0.42	2.77	0.39	26.97	55.14	38.38	43.73	0.88	0.84	0.98
NK-1-V₂-176	I类BA	1452.70	6.57	16.01	2.41	12.02	3.60	1.30	4.29	0.78	4.92	1.02	2.94	0.44	2.87	0.41	29.12	59.58	41.91	46.79	0.90	1.01	0.99
NK-1-V₂-177	I类BA	1454.45	5.49	13.37	2.04	9.97	2.93	1.06	3.56	0.64	4.13	0.85	2.44	0.38	2.41	0.34	23.51	49.62	34.86	38.27	0.91	1.00	0.98
NK-1-V₂-193	I类BA	1483.00	13.03	27.34	3.82	17.81	4.32	1.58	4.50	0.77	4.75	0.89	2.38	0.37	2.24	0.31	40.35	84.11	67.90	56.56	1.20	1.10	0.95
NK-1-V₂-25	DA	1225.37	57.55	113.74	13.50	52.21	10.37	2.28	9.84	1.57	9.48	1.83	5.35	0.82	5.27	0.78	54.46	284.59	249.65	89.40	2.79	0.69	1.00
NK-1-V₂-30	DA	1231.46	57.26	113.12	13.44	51.56	10.16	2.18	9.64	1.56	9.36	1.81	5.34	0.81	5.24	0.78	53.15	282.27	247.72	87.70	2.82	0.67	1.00
NK-1-V₂-38	DA	1244.18	56.50	113.39	13.23	50.38	9.86	2.17	9.46	1.50	9.15	1.79	5.28	0.81	5.28	0.78	53.18	279.58	245.53	87.23	2.81	0.69	1.02
NK-1-V₂-67	DA	1282.55	73.81	151.52	17.65	69.02	13.88	2.80	13.16	2.10	12.87	2.49	7.37	1.10	7.34	1.05	68.21	376.16	328.68	115.69	2.84	0.63	1.03
NK-1-V₂-86	DA	1312.35	58.07	113.80	13.20	50.68	10.07	2.04	9.25	1.48	9.08	1.79	5.14	0.79	5.27	0.75	52.61	281.43	247.87	86.17	2.88	0.65	1.01
NK-1-V₂-102	DA	1333.04	58.62	116.93	13.61	51.92	10.55	2.09	9.63	1.52	9.38	1.84	5.29	0.80	5.28	0.75	54.07	288.22	253.72	88.56	2.86	0.63	1.02
NK-1-V₂-121	DA	1360.40	55.84	110.46	13.04	50.57	10.07	2.19	9.47	1.52	9.14	1.79	5.15	0.78	5.25	0.74	51.58	276.02	242.18	85.42	2.84	0.69	1.00
NK-1-V₂-140	DA	1396.32	52.63	104.47	12.16	46.80	9.29	1.96	8.68	1.39	8.48	1.67	4.73	0.72	4.72	0.68	48.06	258.39	227.31	79.13	2.87	0.67	1.01
NK-1-V₂-173	DA	1449.00	60.44	115.80	13.55	52.56	9.91	2.13	8.85	1.42	8.50	1.58	4.47	0.70	4.35	0.62	74.59	284.86	254.38	105.08	2.42	0.69	0.99
NK-1-V₂-178	DA	1456.15	72.07	145.16	16.84	63.82	12.84	2.85	12.91	2.03	12.06	2.43	7.04	1.07	6.93	1.02	64.50	359.05	313.57	109.98	2.85	0.68	1.02
NK-1-V₂-194	DA	1483.60	57.80	111.29	13.17	51.27	9.89	1.99	8.83	1.40	8.45	1.57	4.28	0.68	4.20	0.60	69.70	275.41	245.41	99.71	2.46	0.65	0.99
NK-1-V₂-197	DA	1489.00	61.52	116.56	13.76	53.19	10.04	2.24	8.85	1.43	8.70	1.63	4.42	0.71	4.50	0.64	76.45	288.18	257.31	107.32	2.40	0.73	0.98
NK-1-V₃-001	DA	1485.00	51.97	102.80	12.23	46.52	9.14	1.85	8.80	1.39	8.07	1.72	4.61	0.69	4.44	0.67	49.80	254.90	224.52	80.19	2.80	0.63	1.00	Miao等 (2021)
NK-1-V₃-007	DA	1493.41	54.86	107.70	13.27	50.24	9.70	1.99	9.45	1.47	8.51	1.78	4.87	0.73	4.63	0.69	51.90	269.90	237.76	84.04	2.83	0.64	0.98
NK-1-V₃-008	DA	1494.81	52.98	104.00	12.80	48.12	9.46	1.92	9.04	1.47	8.39	1.74	4.70	0.69	4.49	0.68	50.55	260.48	229.28	81.75	2.80	0.63	0.98
NK-1-V₂-201	DA	1496.05	68.47	138.04	16.19	61.98	12.38	2.57	12.10	1.87	11.13	2.17	6.33	0.94	6.12	0.90	64.78	341.18	299.64	106.33	2.82	0.64	1.02
NK-1-V₃-010	DA	1497.61	57.91	116.20	13.97	53.40	10.49	2.13	10.22	1.59	9.23	1.94	5.22	0.78	4.95	0.74	56.14	288.77	254.10	90.81	2.80	0.63	1.00
NK-1-V₃-012	DA	1500.41	50.99	100.80	11.98	44.58	8.81	1.81	8.30	1.33	7.57	1.63	4.38	0.67	4.32	0.65	46.89	247.81	218.97	75.73	2.89	0.65	1.00
NK-1-V₃-015	DA	1504.62	58.24	115.70	13.45	52.33	9.97	2.08	9.57	1.52	8.87	1.85	4.97	0.75	4.92	0.73	54.58	284.95	251.77	87.76	2.87	0.65	1.01	Miao等 (2021)
NK-1-V₃-019	DA	1510.22	61.03	120.00	14.22	54.94	10.48	2.17	10.12	1.66	9.31	2.01	5.37	0.80	5.29	0.78	55.69	298.18	262.84	91.03	2.89	0.64	1.00
NK-1-V₃-031	DA	1527.04	61.74	123.20	14.90	56.39	11.11	2.23	10.61	1.71	9.85	2.08	5.65	0.84	5.39	0.82	60.24	306.52	269.57	97.19	2.77	0.63	1.00
NK-1-V₃-033	DA	1529.84	58.80	116.20	14.11	52.72	10.27	2.11	9.97	1.56	9.30	1.90	5.27	0.78	5.04	0.77	54.45	288.80	254.21	89.04	2.86	0.64	0.99
NK-1-V₃-035	DA	1532.64	55.20	108.70	13.28	49.79	9.61	2.05	9.33	1.52	8.71	1.86	4.97	0.75	4.75	0.72	53.27	271.23	238.63	85.87	2.78	0.66	0.98
NK-1-V₃-037	DA	1535.45	56.91	115.00	13.63	53.39	10.22	2.08	9.91	1.58	8.97	1.89	5.22	0.75	4.94	0.73	54.13	285.21	251.23	88.11	2.85	0.63	1.01
NK-1-V₃-038	DA	1536.85	58.36	115.20	13.90	54.07	10.39	2.22	10.02	1.59	9.23	1.94	5.31	0.79	5.14	0.77	56.23	288.93	254.14	91.03	2.79	0.66	0.99
NK-1-V₃-042	DA	1542.45	55.36	110.30	13.28	50.54	9.95	2.03	9.51	1.50	8.72	1.86	4.97	0.73	4.75	0.73	52.96	274.23	241.46	85.72	2.82	0.64	1.00
NK-1-V₃-045	DA	1546.66	57.18	112.60	13.54	51.73	9.93	1.99	9.57	1.54	8.69	1.86	4.95	0.75	4.76	0.72	52.31	279.81	246.97	85.15	2.90	0.62	0.99
NK-1-V₃-050	DA	1553.66	55.90	110.90	13.27	51.20	9.84	2.07	9.32	1.52	8.71	1.87	5.02	0.75	4.86	0.73	51.91	275.95	243.18	84.68	2.87	0.66	1.00
NK-1-V₃-052	DA	1556.46	51.79	102.30	12.44	47.05	9.25	1.91	8.78	1.43	8.33	1.73	4.66	0.70	4.54	0.68	49.56	255.57	224.74	80.39	2.80	0.65	0.99
NK-1-V₃-059	DA	1566.27	55.39	110.40	13.39	52.08	10.01	2.07	9.65	1.54	8.92	1.86	5.07	0.75	4.78	0.73	53.67	276.64	243.34	86.97	2.80	0.64	0.99
NK-1-V₃-062	DA	1570.48	56.85	111.60	13.33	51.30	9.93	1.98	9.47	1.51	8.75	1.85	5.04	0.75	4.89	0.72	53.20	277.98	244.99	86.19	2.84	0.63	0.99
NK-1-V₃-065	DA	1574.68	50.53	101.90	12.28	46.69	9.16	1.90	8.72	1.41	8.02	1.70	4.65	0.68	4.38	0.66	49.54	252.68	222.46	79.76	2.79	0.65	1.00
NK-1-V₃-067	DA	1577.48	63.22	125.30	15.14	58.94	11.29	2.39	10.86	1.75	10.33	2.14	5.70	0.86	5.47	0.83	60.40	314.22	276.28	98.34	2.81	0.66	0.99
NK-1-V₃-069	DA	1580.29	56.36	111.00	13.32	50.86	9.93	2.09	9.68	1.54	8.95	1.87	5.15	0.75	4.92	0.75	54.50	277.17	243.56	88.11	2.76	0.65	0.99
NK-1-V₃-072	DA	1584.49	59.73	119.20	14.21	54.24	10.59	2.24	10.42	1.62	9.48	1.95	5.29	0.78	5.05	0.78	55.11	295.58	260.21	90.48	2.88	0.65	1.00
NK-1-V₃-075	DA	1588.69	57.55	116.90	13.90	53.78	10.56	2.19	10.30	1.62	9.55	1.98	5.45	0.79	5.18	0.78	57.23	290.53	254.88	92.88	2.74	0.64	1.01
NK-1-V₃-077	DA	1591.50	60.23	119.10	14.47	55.32	10.71	2.24	10.25	1.68	9.46	2.04	5.34	0.80	5.22	0.77	57.98	297.63	262.07	93.54	2.80	0.65	0.99
NK-1-V₃-082	DA	1598.50	56.45	111.60	13.70	51.62	10.27	2.09	9.96	1.57	9.13	1.95	5.24	0.79	5.01	0.77	56.15	280.15	245.73	90.57	2.71	0.63	0.98
NK-1-V₃-087	DA	1605.51	57.69	115.10	13.74	52.92	10.22	2.14	9.91	1.58	9.10	1.92	5.31	0.77	4.99	0.76	55.40	286.15	251.81	89.74	2.81	0.65	1.00
NK-1-V₃-089	DA	1608.31	58.45	116.20	14.10	53.46	10.62	2.13	10.05	1.61	9.31	1.94	5.28	0.79	5.02	0.77	54.33	289.72	254.96	89.09	2.86	0.63	0.99
NK-1-V₃-099	DA	1622.32	61.36	122.40	14.92	56.00	11.12	2.31	10.59	1.70	9.73	2.06	5.50	0.82	5.35	0.80	58.89	304.66	268.11	95.44	2.81	0.65	0.99
NK-1-V₃-107	DA	1633.54	58.02	114.70	13.88	53.21	10.40	2.18	9.99	1.61	9.23	1.99	5.27	0.80	5.09	0.77	56.93	287.14	252.39	91.67	2.75	0.65	0.99
NK-1-V₃-109	DA	1636.34	58.89	119.40	14.26	53.93	10.73	2.21	10.25	1.61	9.23	1.97	5.24	0.79	5.09	0.75	55.99	294.35	259.42	90.92	2.85	0.64	1.01
NK-1-V₃-116	DA	1646.15	49.68	98.17	11.93	45.57	8.84	1.87	8.47	1.36	7.81	1.68	4.47	0.67	4.33	0.65	47.43	245.49	216.06	76.87	2.81	0.66	0.99
NK-1-V₃-118	DA	1648.95	57.98	116.70	13.75	53.35	10.26	2.12	9.98	1.58	9.22	1.94	5.23	0.78	5.02	0.76	56.08	288.67	254.16	90.59	2.81	0.64	1.01
NK-1-V₃-120	DA	1651.75	60.20	120.70	14.43	55.19	10.52	2.23	10.25	1.63	9.49	2.04	5.49	0.82	5.20	0.79	58.20	298.98	263.27	93.92	2.80	0.66	1.00
NK-1-V₃-122	DA	1654.55	58.48	114.60	13.72	52.51	9.97	2.04	9.53	1.52	8.83	1.87	5.05	0.76	4.91	0.73	53.70	284.53	251.31	86.92	2.89	0.64	0.99
NK-1-V₃-126	DA	1660.16	57.57	116.90	13.92	53.47	10.26	2.06	9.81	1.57	9.17	1.91	5.21	0.78	5.02	0.76	54.92	288.40	254.18	89.14	2.85	0.63	1.01
NK-1-V₃-130	DA	1665.76	56.54	115.40	13.74	51.99	10.01	2.05	9.61	1.54	9.02	1.90	5.10	0.77	4.96	0.74	54.91	283.37	249.73	88.56	2.82	0.64	1.02
NK-1-V₃-133	DA	1669.97	55.52	110.40	13.18	50.99	9.65	2.06	9.22	1.49	8.70	1.81	4.91	0.73	4.71	0.71	51.06	274.07	241.80	83.33	2.90	0.67	1.00
NK-1-V₃-135	DA	1672.77	55.38	109.30	13.13	49.26	9.59	1.96	9.13	1.47	8.48	1.78	4.90	0.73	4.75	0.71	51.67	270.56	238.61	83.61	2.85	0.64	0.99
NK-1-V₃-139	DA	1678.38	51.67	103.20	12.19	46.19	8.82	1.81	8.43	1.33	7.85	1.62	4.49	0.68	4.29	0.67	47.27	253.23	223.88	76.62	2.92	0.64	1.01
NK-1-V₃-143	DA	1683.98	57.23	111.50	13.55	50.99	9.83	1.88	9.29	1.53	8.74	1.85	5.12	0.75	4.90	0.73	53.19	277.88	244.97	86.10	2.85	0.60	0.98
NK-1-V₃-145	DA	1686.78	52.73	104.30	12.57	47.69	9.22	1.91	8.73	1.42	8.14	1.70	4.64	0.68	4.45	0.67	49.31	258.85	228.42	79.75	2.86	0.65	0.99

Appendix Tab. S3

Appendix Tab. S4

Zircon U-Pb isotope data of volcanic rocks from Well NK-1 in the Nansha Block, southern South China Sea"

样品编号	点号	U/(μg·g^-1)	Th/(μg·g^-1)	Th/U	Pb/(μg·g^-1)	f₂₀₆/%	放射性同位素比值						同位素年龄/Ma				参考文献
样品编号	点号	U/(μg·g^-1)	Th/(μg·g^-1)	Th/U	Pb/(μg·g^-1)	f₂₀₆/%	²⁰⁷Pb/²³⁵U	±σ/%	²⁰⁶Pb/²³⁸U	±σ/%	²⁰⁷Pb/²⁰⁶Pb	±σ/%	²⁰⁷Pb/²³⁵U	±σ/%	²⁰⁶Pb/²³⁸U	±σ/%	参考文献
NK-1- V₂-25	01	225.89	216.24	0.96	-	0.28	0.24	2.09	0.03	1.58	0.05	1.37	215.54	4.07	215.56	3.35	Wei等 (2022)
	02	177.79	150.08	0.84	-	0.41	0.24	2.18	0.03	1.56	0.05	1.52	217.31	4.28	219.26	3.37
	03	175.32	153.00	0.87	-	0.21	0.25	2.21	0.03	1.61	0.05	1.51	222.97	4.43	219.38	3.48
	04	175.99	138.73	0.79	-	0.19	0.24	2.30	0.03	1.60	0.05	1.65	216.03	4.49	219.46	3.46
	05	141.56	114.25	0.81	-	0.28	0.24	2.60	0.03	1.56	0.05	2.08	217.77	5.10	214.31	3.28
	06	224.91	179.49	0.80	-	0.20	0.25	1.99	0.04	1.51	0.05	1.30	223.18	4.00	225.18	3.34
	07	209.88	193.66	0.92	-	0.20	0.24	2.33	0.03	1.55	0.05	1.75	215.55	4.54	217.52	3.31
	08	132.76	87.41	0.66	-	0.37	0.24	2.37	0.03	1.52	0.05	1.81	214.48	4.59	217.08	3.25
	11	592.01	377.67	0.64	-	0.62	0.23	2.94	0.03	1.54	0.05	2.51	212.01	5.65	214.32	3.24
	12	135.77	103.27	0.76	-	0.11	0.24	2.31	0.03	1.59	0.05	1.67	220.09	4.58	220.30	3.45
	14	185.45	140.50	0.76	-	0.37	0.24	2.06	0.03	1.51	0.05	1.40	222.14	4.11	221.11	3.28
	15	247.57	146.00	0.59	-	0.21	0.24	2.45	0.03	1.74	0.05	1.72	215.20	4.76	217.73	3.73
	16	168.42	125.42	0.74	-	0.29	0.24	2.38	0.03	1.67	0.05	1.68	218.25	4.68	215.45	3.55
	17	140.86	123.58	0.88	-	0.76	0.24	3.16	0.03	1.55	0.05	2.75	218.81	6.24	217.83	3.32
	18	170.96	132.03	0.77	-	0.37	0.24	2.81	0.03	1.58	0.05	2.32	218.68	5.54	217.54	3.38
	19	225.31	189.07	0.84	-	0.25	0.24	2.15	0.03	1.54	0.05	1.51	220.04	4.27	221.30	3.35
	20	176.63	104.10	0.59	-	0.25	0.23	2.84	0.03	1.56	0.05	2.38	211.40	5.44	213.16	3.27
NK-1- V₂-67	01	120.24	73.49	0.61	-	0.74	0.23	2.55	0.03	1.50	0.05	2.06	210.54	4.87	220.80	3.26	Wei等(2022)
	02	125.83	68.63	0.55	-	0.21	0.25	2.49	0.03	1.51	0.05	1.97	224.02	5.01	221.16	3.29
	03	123.29	81.14	0.66	-	0.79	0.24	3.45	0.03	1.53	0.05	3.09	216.16	6.74	215.38	3.25
	05	194.22	164.64	0.85	-	0.71	0.24	2.21	0.03	1.52	0.05	1.60	220.97	4.40	220.07	3.29
	06	161.07	134.95	0.84	-	0.50	0.24	2.43	0.04	1.67	0.05	1.76	217.75	4.77	222.22	3.65
	07	138.51	84.00	0.61	-	0.55	0.25	2.51	0.03	1.64	0.05	1.90	222.52	5.03	218.97	3.54
	08	123.23	74.16	0.60	-	0.50	0.24	2.81	0.03	1.93	0.05	2.03	221.12	5.59	216.13	4.11
	09	124.09	82.28	0.66	-	0.72	0.24	2.92	0.03	1.50	0.05	2.50	219.52	5.77	220.98	3.26
	11	188.65	121.34	0.64	-	0.35	0.24	2.22	0.03	1.52	0.05	1.62	220.29	4.41	219.72	3.28
	12	281.79	181.62	0.64	-	0.30	0.25	2.43	0.03	1.50	0.05	1.90	222.65	4.86	218.60	3.23
	13	333.13	301.86	0.91	-	0.31	0.24	2.13	0.04	1.51	0.05	1.51	221.99	4.27	223.56	3.31
	14	82.58	47.30	0.57	-	0.88	0.24	2.89	0.03	1.54	0.05	2.44	216.32	5.65	215.79	3.28
	15	159.10	137.14	0.86	-	0.16	0.24	2.57	0.03	1.59	0.05	2.02	219.81	5.10	219.29	3.44
	17	158.83	125.37	0.79	-	0.75	0.22	5.94	0.03	1.52	0.05	5.74	199.09	10.79	215.85	3.23
	19	156.29	135.03	0.86	-	0.51	0.25	2.72	0.03	1.57	0.05	2.22	224.44	5.49	219.38	3.39
	21	178.12	134.99	0.76	-	0.66	0.24	2.50	0.03	1.52	0.05	1.99	218.12	4.92	218.60	3.26
	22	134.56	99.23	0.74	-	0.43	0.24	2.43	0.03	1.54	0.05	1.89	218.58	4.79	217.54	3.29
	24	88.01	57.46	0.65	-	0.71	0.24	4.60	0.03	1.55	0.05	4.33	215.50	8.98	215.73	3.29
	25	90.51	54.14	0.60	-	0.46	0.24	2.89	0.03	1.54	0.05	2.45	218.70	5.71	215.02	3.25
	26	259.29	239.68	0.92	-	0.19	0.24	2.01	0.03	1.50	0.05	1.34	222.12	4.01	217.70	3.21
NK-1- V₂-102	01	191.99	115.01	0.60	-	0.29	0.24	2.98	0.03	1.54	0.05	2.55	219.33	5.90	218.18	3.31	Wei等 (2022)
	02	403.70	339.26	0.84	-	0.13	0.24	1.95	0.04	1.50	0.05	1.24	221.51	3.88	222.07	3.28
	03	151.16	128.64	0.85	-	0.37	0.25	2.32	0.03	1.52	0.05	1.74	225.12	4.69	221.21	3.32
	04	102.89	60.50	0.59	-	0.30	0.24	3.68	0.03	1.50	0.05	3.36	216.06	7.19	218.98	3.24
	05	117.40	86.55	0.74	-	0.32	0.24	3.00	0.03	1.56	0.05	2.57	216.09	5.86	216.64	3.32
	06	177.63	157.30	0.89	-	0.61	0.22	3.38	0.03	1.50	0.05	3.03	204.20	6.27	211.79	3.13
	07	219.45	182.14	0.83	-	0.28	0.24	2.37	0.04	1.52	0.05	1.81	222.17	4.73	222.44	3.33
	08	157.42	118.45	0.75	-	0.36	0.25	2.23	0.04	1.50	0.05	1.65	229.63	4.60	225.76	3.34
	09	214.13	193.57	0.90	-	0.11	0.25	2.15	0.04	1.59	0.05	1.45	223.44	4.33	223.14	3.49
	10	168.64	137.31	0.81	-	0.36	0.24	2.22	0.03	1.50	0.05	1.64	219.93	4.40	220.44	3.25
	11	162.75	148.13	0.91	-	3.11	0.23	6.50	0.03	1.53	0.05	6.32	206.94	12.24	213.89	3.21
	12	196.99	183.84	0.93	-	0.31	0.23	2.99	0.03	1.53	0.05	2.57	213.11	5.77	217.12	3.27
	13	113.76	65.78	0.58	-	0.27	0.24	2.86	0.03	1.50	0.05	2.44	216.78	5.60	219.41	3.24
	14	720.53	739.82	1.03	-	0.19	0.24	1.70	0.03	1.50	0.05	0.79	219.77	3.36	219.86	3.25
	15	139.44	114.05	0.82	-	0.10	0.25	2.57	0.03	1.52	0.05	2.07	224.92	5.19	218.29	3.26
	16	212.44	184.46	0.87	-	0.32	0.24	2.68	0.03	1.50	0.05	2.22	216.85	5.24	219.01	3.24
	17	139.85	91.92	0.66	-	0.55	0.24	2.45	0.03	1.51	0.05	1.94	217.53	4.82	216.29	3.20
	18	321.04	157.83	0.49	-	0.26	0.24	2.12	0.03	1.51	0.05	1.48	217.63	4.16	216.21	3.22
	20	395.83	364.22	0.92	-	0.33	0.24	1.88	0.03	1.50	0.05	1.14	221.85	3.76	220.84	3.26
	21	161.25	132.87	0.82	-	1.08	0.23	5.17	0.03	1.53	0.05	4.94	206.65	9.71	216.94	3.26
	22	141.42	80.31	0.57	-	0.64	0.23	3.82	0.03	1.51	0.05	3.51	208.75	7.24	216.84	3.23
	23	147.23	110.23	0.75	-	0.19	0.25	3.08	0.03	1.53	0.05	2.68	228.44	6.33	219.48	3.29
	25	130.98	101.31	0.77	-	0.28	0.24	2.57	0.03	1.52	0.05	2.07	216.68	5.03	218.57	3.27
	26	195.70	130.89	0.67	-	0.39	0.25	2.22	0.03	1.52	0.05	1.62	222.60	4.45	218.75	3.27
	27	223.17	148.07	0.66	-	0.38	0.25	2.13	0.04	1.52	0.05	1.49	224.87	4.30	224.27	3.34
NK-1- V₂-197	01	211.92	190.95	0.90	-	0.56	0.24	2.25	0.03	1.52	0.05	1.66	215.30	4.37	219.56	3.28	Wei等 (2022)
	02	109.94	69.71	0.63	-	0.52	0.23	4.77	0.03	1.66	0.05	4.48	209.19	9.07	215.32	3.51
	03	160.81	129.38	0.80	-	0.40	0.23	3.37	0.03	1.52	0.05	3.01	210.76	6.43	215.20	3.21
	04	321.03	276.53	0.86	-	0.47	0.24	2.01	0.03	1.55	0.05	1.27	218.29	3.95	216.25	3.30
	05	131.38	83.56	0.64	-	0.46	0.25	2.69	0.04	1.50	0.05	2.24	225.20	5.46	223.88	3.30
	06	114.05	70.59	0.62	-	0.54	0.23	4.07	0.03	1.50	0.05	3.78	209.08	7.72	214.57	3.17
	07	167.92	97.68	0.58	-	0.23	0.24	2.51	0.03	1.52	0.05	2.00	222.19	5.02	217.96	3.25
	08	419.67	351.50	0.84	-	0.16	0.24	2.40	0.03	1.51	0.05	1.86	221.50	4.78	218.94	3.25
	09	178.56	155.55	0.87	-	0.48	0.24	3.28	0.04	1.55	0.05	2.89	221.66	6.55	221.91	3.38
	10	337.53	243.67	0.72	-	0.27	0.24	2.49	0.03	1.50	0.05	1.99	215.46	4.85	217.50	3.21
	12	146.21	103.05	0.70	-	0.35	0.25	2.58	0.03	1.52	0.05	2.08	224.29	5.20	220.29	3.28
NK-1- V₂-197	13	280.84	249.37	0.89	-	0.21	0.25	2.13	0.04	1.51	0.05	1.50	223.44	4.29	226.23	3.37	Wei等 (2022)
	14	104.82	59.17	0.56	-	0.56	0.23	5.66	0.03	1.51	0.05	5.46	211.96	10.89	219.16	3.26
	15	219.11	198.28	0.90	-	0.44	0.25	2.68	0.03	1.50	0.05	2.23	222.86	5.39	219.11	3.23
	16	207.11	181.08	0.87	-	0.46	0.24	2.49	0.03	1.64	0.05	1.87	216.96	4.88	220.78	3.57
	17	220.11	183.43	0.83	-	0.42	0.23	3.61	0.03	1.62	0.05	3.23	210.81	6.90	215.65	3.43
	18	187.67	139.62	0.74	-	0.49	0.24	2.51	0.03	1.53	0.05	1.99	219.15	4.96	218.72	3.29
	19	108.68	84.96	0.78	-	2.91	0.25	2.60	0.04	1.51	0.05	2.11	222.74	5.21	222.18	3.29
	20	161.63	125.55	0.78	-	0.31	0.22	7.15	0.03	1.55	0.05	6.99	200.63	13.11	219.58	3.34
	22	133.22	95.73	0.72	-	0.50	0.24	2.37	0.03	1.56	0.05	1.79	217.61	4.66	216.06	3.32
	23	125.94	93.03	0.74	-	0.04	0.25	2.40	0.03	1.55	0.05	1.83	224.06	4.83	216.47	3.29
	24	192.72	175.93	0.91	-	0.62	0.24	2.22	0.03	1.60	0.05	1.54	220.32	4.40	219.61	3.46
	25	162.98	112.53	0.69	-	0.49	0.25	2.38	0.04	1.51	0.05	1.84	229.30	4.90	224.72	3.33
NK-1- V₃-009	01	115.00	101.00	0.76	5.26	-	0.24	2.10	0.03	1.50	0.05	1.50	221.00	4.00	219.00	3.00	Miao等 (2021)
	02	97.50	57.40	0.44	4.15	-	0.25	2.80	0.03	1.80	0.05	2.10	224.00	6.00	218.00	4.00
	03	88.70	61.80	0.52	3.81	-	0.24	2.40	0.03	1.70	0.05	1.70	220.00	5.00	215.00	4.00
	04	89.50	65.00	0.65	3.90	-	0.24	2.50	0.03	1.60	0.05	1.70	218.00	5.00	215.00	3.00
	05	79.30	52.90	0.54	3.43	-	0.24	2.40	0.03	1.60	0.05	1.80	222.00	5.00	218.00	3.00
	06	275.00	279.00	1.26	12.90	-	0.24	2.00	0.03	1.60	0.05	1.00	214.00	4.00	218.00	3.00
	07	155.00	83.40	0.48	6.44	-	0.24	3.00	0.03	2.60	0.05	1.60	218.00	6.00	217.00	5.00
	08	144.00	128.00	1.11	6.60	-	0.24	2.20	0.03	1.50	0.05	1.30	215.00	4.00	219.00	3.00
	09	98.50	69.00	0.83	4.27	-	0.23	2.50	0.03	1.50	0.05	2.00	212.00	5.00	214.00	3.00
	10	107.00	78.80	0.83	4.75	-	0.24	3.00	0.03	1.50	0.05	1.90	219.00	6.00	221.00	3.00
	11	104.00	63.50	0.53	4.49	-	0.24	2.90	0.03	1.80	0.05	2.30	222.00	6.00	219.00	4.00
	12	159.00	137.00	1.00	7.23	-	0.24	2.50	0.03	1.60	0.05	1.50	215.00	5.00	218.00	3.00
	13	246.00	238.00	1.06	11.40	-	0.24	2.00	0.03	1.50	0.05	1.10	216.00	4.00	217.00	3.00
	14	154.00	129.00	0.70	6.91	-	0.24	2.10	0.03	1.50	0.05	1.40	220.00	4.00	216.00	3.00
NK-1- V₃-068	01	74.10	43.30	1.12	3.12	-	0.23	3.60	0.03	1.50	0.05	2.60	208.00	7.00	216.00	3.00	Miao等 (2021)
	02	83.00	62.20	0.55	3.70	-	0.25	2.30	0.03	1.50	0.05	1.70	226.00	5.00	218.00	3.00
	03	110.00	80.40	0.51	4.88	-	0.25	2.30	0.03	1.60	0.05	1.70	227.00	5.00	219.00	4.00
	04	121.00	84.90	0.47	5.27	-	0.25	3.00	0.03	1.50	0.06	1.40	225.00	6.00	215.00	3.00
	06	91.40	67.30	0.92	4.00	-	0.23	2.30	0.03	1.60	0.05	1.70	213.00	4.00	216.00	3.00
	07	140.00	120.00	0.87	6.18	-	0.23	2.60	0.03	1.50	0.05	1.70	213.00	5.00	213.00	3.00
	09	128.00	110.00	0.60	5.86	-	0.25	2.00	0.03	1.50	0.05	1.40	227.00	4.00	219.00	3.00
	10	78.10	45.50	0.57	3.21	-	0.23	2.90	0.03	1.60	0.05	1.80	213.00	6.00	213.00	3.00
	12	136.00	120.00	0.89	6.16	-	0.24	2.10	0.03	1.60	0.05	1.40	216.00	4.00	217.00	3.00
	13	114.00	90.00	0.64	5.05	-	0.24	2.10	0.03	1.50	0.05	1.50	220.00	4.00	216.00	3.00
NK-1- V₃-068	14	75.70	52.10	0.74	3.32	-	0.24	2.50	0.03	1.70	0.05	1.80	217.00	5.00	218.00	4.00
	15	85.90	62.30	1.91	3.73	-	0.22	3.20	0.03	1.80	0.05	1.70	206.00	6.00	217.00	4.00
	16	305.00	211.00	0.78	13.60	-	0.24	2.10	0.04	1.50	0.05	1.40	220.00	4.00	222.00	3.00	Miao等 (2021)
	17	129.00	128.00	1.25	5.96	-	0.23	2.50	0.03	1.60	0.05	1.40	212.00	5.00	216.00	3.00
	18	220.00	179.00	0.79	10.30	-	0.25	1.80	0.04	1.50	0.05	0.90	227.00	4.00	226.00	3.00
	19	76.80	49.80	0.67	3.33	-	0.24	2.80	0.03	2.10	0.05	1.80	218.00	5.00	218.00	5.00
	22	140.00	97.90	0.84	6.07	-	0.23	2.40	0.03	1.60	0.05	1.30	214.00	5.00	217.00	3.00
	24	164.00	95.40	0.52	6.85	-	0.24	2.20	0.03	1.50	0.05	1.20	217.00	4.00	214.00	3.00
	25	108.00	80.10	1.73	4.73	-	0.23	2.60	0.03	1.60	0.05	1.50	207.00	5.00	217.00	3.00
NK-1- V₃-143	02	473.00	370.00	0.75	21.50	-	0.25	1.90	0.04	1.70	0.05	0.70	223.00	4.00	222.00	4.00	Miao等(2021)
	06	112.00	73.50	1.29	4.82	-	0.23	3.20	0.03	1.60	0.05	1.50	210.00	6.00	219.00	3.00
	07	200.00	160.00	0.76	8.74	-	0.23	3.10	0.03	2.00	0.05	1.60	214.00	6.00	213.00	4.00
	08	74.70	44.40	0.76	3.13	-	0.23	3.90	0.03	1.50	0.05	1.80	212.00	7.00	216.00	3.00
	09	89.90	73.00	0.97	4.02	-	0.24	3.00	0.03	1.80	0.05	1.70	214.00	6.00	217.00	4.00
	10	107.00	80.10	0.63	4.75	-	0.24	2.40	0.03	1.50	0.05	1.90	222.00	5.00	218.00	3.00
	11	222.00	190.00	0.57	9.64	-	0.24	2.00	0.03	1.50	0.05	1.40	216.00	4.00	207.00	3.00
	12	80.90	52.80	0.71	3.43	-	0.23	3.90	0.03	1.70	0.05	2.90	213.00	8.00	214.00	4.00
	13	117.00	110.00	0.70	5.43	-	0.25	2.20	0.03	1.60	0.05	1.50	223.00	4.00	216.00	3.00
	14	125.00	107.00	1.00	5.62	-	0.23	2.60	0.03	1.70	0.05	1.40	214.00	5.00	217.00	4.00
	15	189.00	173.00	1.10	8.71	-	0.24	2.20	0.03	1.50	0.05	1.20	216.00	4.00	219.00	3.00
	16	122.00	98.40	1.02	5.50	-	0.24	2.60	0.03	1.50	0.05	1.40	216.00	5.00	221.00	3.00
	17	89.00	69.90	0.61	3.94	-	0.24	3.00	0.03	2.20	0.05	1.70	221.00	6.00	216.00	5.00
	18	166.00	151.00	1.35	7.80	-	0.24	2.40	0.04	1.50	0.05	1.20	217.00	5.00	224.00	3.00

Appendix Tab. S4

Appendix Tab. S5

Sr-Nd-Hf isotope data of volcanic rocks from Well NK-1 in the Nansha Block, southern South China Sea"

样品编号	岩性	深度/m	⁸⁷Rb/⁸⁶Sr	⁸⁷Sr/⁸⁶Sr	±2σ	(⁸⁷Sr/⁸⁶Sr)_i	¹⁴⁷Sm/¹⁴⁴Nd	¹⁴³Nd/¹⁴⁴Nd	±2σ	ε_Nd(t)*	T_DM(Ma)	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	±2σ	参考文献
NK-1-V₂-44	II类BA	1250.85	1.37	0.709797	0.000017	0.705521	0.177442	0.512816	0.000009	4.02	1401.33	0.032971	0.283096	0.000013	Wei等(2022)
NK-1-V₂-52	II类BA	1262.95	2.35	0.713427	0.000016	0.706102	0.175155	0.512662	0.000009	1.07	1923.88	0.032682	0.282871	0.000011
NK-1-V₂-53	II类BA	1263.39	2.04	0.712738	0.000010	0.706378	0.175322	0.512654	0.000009	0.91	1963.51	0.032641	0.282878	0.000010
NK-1-V₂-125	II类BA	1366.85	2.30	0.712188	0.000012	0.705026	0.161259	0.512861	0.000006	5.35	839.09	0.023841	0.282937	0.000008
NK-1-V₂-145	I类BA	1404.25	0.75	0.709489	0.000017	0.707140	0.178536	0.512845	0.000011	4.55	1320.95	0.023938	0.282956	0.000008
NK-1-V₂-146	I类BA	1405.75	0.21	0.709281	0.000016	0.708621	0.172241	0.512812	0.000013	4.07	1243.01	0.022882	0.282940	0.000008
NK-1-V₂-147	I类BA	1407.35	0.43	0.706860	0.000017	0.705511	0.176994	0.512807	0.000007	3.86	1421.03	0.022705	0.282900	0.000009
NK-1-V₂-148	I类BA	1407.70	0.81	0.707441	0.000014	0.704926	0.155658	0.512718	0.000007	2.70	1134.92	0.019023	0.282707	0.000008
NK-1-V₂-149	I类BA	1409.35	0.67	0.707709	0.000015	0.705626	0.173157	0.512800	0.000009	3.83	1313.19	0.023887	0.282896	0.000008
NK-1-V₂-150	I类BA	1411.00	0.73	0.707397	0.000018	0.705115	0.173157	0.512800	0.000009	3.83	1313.19	0.023224	0.282912	0.000008
NK-1-V₂-150-R	I类BA	1411.00	0.73	0.707386	0.000010	0.705105	0.173184	0.512796	0.000008	3.75	1328.96	0.023855	0.282917	0.000007
NK-1-V₂-151	I类BA	1412.95	0.52	0.708645	0.000015	0.707019	0.164611	0.512794	0.000007	3.95	1103.91	0.022704	0.282938	0.000009
NK-1-V₂-154	II类BA	1417.20	0.48	0.706892	0.000016	0.705389	0.173382	0.512831	0.000009	4.41	1206.92	0.030199	0.282960	0.000010
NK-1-V₂-174	I类BA	1450.52	1.01	0.706908	0.000016	0.703769	0.175379	0.512809	0.000009	3.93	1354.68	0.025501	0.283054	0.000012
NK-1-V₂-175	I类BA	1451.21	0.86	0.710267	0.000019	0.707579	0.174830	0.512886	0.000010	5.46	1033.29	0.024379	0.282967	0.000007
NK-1-V₂-176	I类BA	1452.70	0.81	0.708138	0.000011	0.705625	0.181026	0.512887	0.000013	5.31	1224.17	0.024964	0.282853	0.000009
NK-1-V₂-177	I类BA	1454.45	0.09	0.708870	0.000016	0.708579	0.177380	0.512880	0.000007	5.26	1132.94	0.024575	0.283003	0.000010
样品编号	岩性	深度/m	ε_Hf(t)**	T_DM(Ma)	锆石年龄	²⁰⁸Pb/²⁰⁴Pb	±2σ	²⁰⁷Pb/²⁰⁴Pb	±2σ	²⁰⁶Pb/²⁰⁴Pb	±2σ	(²⁰⁸Pb/²⁰⁴Pb)_i	(²⁰⁷Pb/²⁰⁴Pb)_i	(²⁰⁶Pb/²⁰⁴Pb)_i	参考文献
NK-1-V₂-44	II类BA	1250.85	11.51	1494.70	-	-	-	-	-	-	-	-	-	-	Wei等(2022)
NK-1-V₂-52	II类BA	1262.95	3.59	3433.73	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-53	II类BA	1263.39	3.81	3356.88	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-125	II类BA	1366.85	7.20	1138.31	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-145	I类BA	1404.25	7.85	1078.45	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-146	I类BA	1405.75	7.44	1059.43	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-147	I类BA	1407.35	6.05	1181.50	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-148	I类BA	1407.70	-0.23	1479.09	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-149	I类BA	1409.35	5.74	1290.23	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-150	I类BA	1411.00	6.41	1179.17	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-150-R	I类BA	1411.00	6.49	1212.16	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-151	I类BA	1412.95	7.38	1055.47	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-154	II类BA	1417.20	7.10	1858.79	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-174	I类BA	1450.52	11.09	808.02	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-175	I类BA	1451.21	8.17	1070.95	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-176	I类BA	1452.70	4.05	1560.64	-	-	-	-	-	-	-	-	-	-
NK-1-V₂-177	I类BA	1454.45	9.44	946.97	-	-	-	-	-	-	-	-	-	-
样品编号	岩性	深度/m	⁸⁷Rb/⁸⁶Sr	⁸⁷Sr/⁸⁶Sr	±2σ	(⁸⁷Sr/⁸⁶Sr)_i	¹⁴⁷Sm/¹⁴⁴Nd	¹⁴³Nd/¹⁴⁴Nd	±2σ	ε_Nd(t)*	T_DM(Ma)	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	±2σ	参考文献
NK-1-V₂-25	DA	1225.37	2.87	0.720217	0.000017	0.711287	0.120040	0.512244	0.000006	-5.55	1472.22	0.010065	0.282617	0.000007	Wei等(2022)
NK-1-V₂-67	DA	1282.55	2.97	0.719831	0.000016	0.710570	0.121546	0.512245	0.000008	-5.56	1493.62	0.010437	0.282596	0.000008
NK-1-V₂-102	DA	1333.04	2.63	0.719186	0.000013	0.710995	0.122824	0.512232	0.000008	-5.86	1536.98	0.009184	0.282624	0.000003
NK-1-V₂-197	DA	1489.00	3.52	0.720342	0.000010	0.709389	0.114121	0.512241	0.000013	-5.44	1389.68	0.010347	0.282619	0.000005
NK-1-V₃-010	DA	-	-	0.719063	0.000022	0.710058	-	0.512247	0.000010	-5.47	1437.55	-	0.282629	0.000005	Miao等(2021)
NK-1-V₃-012	DA	-	-	0.722178	0.000021	0.710187	-	0.512240	0.000009	-5.63	1450.47	-	0.282614	0.000005
NK-1-V₃-019	DA	-	-	0.722567	0.000026	0.710943	-	0.512235	0.000009	-5.62	1449.57	-	0.282614	0.000005
NK-1-V₃-042	DA	-	-	0.720260	0.000017	0.709756	-	0.512247	0.000014	-5.47	1437.73	-	0.282640	0.000007
NK-1-V₃-052	DA	-	-	0.719155	0.000021	0.710378	-	0.512233	0.000013	-5.74	1459.76	-	0.282622	0.000004
NK-1-V₃-062	DA	-	-	0.720087	0.000021	0.710776	-	0.512218	0.000011	-5.99	1479.62	-	0.282621	0.000004
NK-1-V₃-072	DA	-	-	0.720973	0.000021	0.709985	-	0.512256	0.000012	-5.28	1421.93	-	0.282628	0.000005
NK-1-V₃-087	DA	-	-	0.717872	0.000017	0.710572	-	0.512222	0.000012	-5.90	1472.84	-	0.282619	0.000006
NK-1-V₃-109	DA	-	-	0.717672	0.000017	0.709877	-	0.512214	0.000009	-6.16	1493.29	-	0.282637	0.000005
NK-1-V₃-120	DA	-	-	0.719874	0.000023	0.709963	-	0.512236	0.000015	-5.59	1447.23	-	0.282627	0.000005
NK-1-V₃-130	DA	-	-	0.721599	0.000018	0.710622	-	0.512245	0.000011	-5.45	1436.03	-	0.282611	0.000006
NK-1-V₃-143	DA	-	-	0.719650	0.000025	0.710299	-	0.512278	0.000013	-4.80	1383.33	-	0.282635	0.000006
样品编号	岩性	深度/m	ε_Hf(t)**	T_DM(Ma)	锆石年龄	²⁰⁸Pb/²⁰⁴Pb	±2σ	²⁰⁷Pb/²⁰⁴Pb	±2σ	²⁰⁶Pb/²⁰⁴Pb	±2σ	⁽²⁰⁸Pb/²⁰⁴Pb)_i	⁽²⁰⁷Pb/²⁰⁴Pb)_i	⁽²⁰⁶Pb/²⁰⁴Pb)_i	参考文献
NK-1-V₂-25	DA	1225.37	-2.1	1183	217.9±1.6	-	-	-	-	-	-	-	-	-	Wei等(2022)
NK-1-V₂-67	DA	1282.55	-2.9	1238	218.6±1.5	-	-	-	-	-	-	-	-	-
NK-1-V₂-102	DA	1333.04	-1.7	1135	219.0±1.3	-	-	-	-	-	-	-	-	-
NK-1-V₂-197	DA	1489.00	-2.1	1191	219.1±1.4	-	-	-	-	-	-	-	-	-
NK-1-V₃-010	DA	-	-2.1	1150	-	39.551815	0.004729	15.773817	0.001597	19.086147	0.001884	38.846419	15.749215	18.598753	Miao等(2021)
NK-1-V₃-012	DA	-	-2.5	1151	-	39.486735	0.002878	15.771988	0.001000	19.040005	0.001170	38.877602	15.750492	18.614140
NK-1-V₃-019	DA	-	-2.6	1164	-	39.517576	0.003538	15.772810	0.001242	19.061663	0.001312	38.899038	15.751207	18.633687
NK-1-V₃-042	DA	-	-1.8	1142	-	39.510903	0.003289	15.772463	0.001113	19.059029	0.001292	38.899730	15.751336	18.640465
NK-1-V₃-052	DA	-	-2.3	1162	-	39.494843	0.003538	15.773548	0.001845	19.054607	0.001729	38.888115	15.752139	18.630460
NK-1-V₃-062	DA	-	-2.3	1152	-	39.556471	0.002969	15.766456	0.001267	19.085084	0.001291	38.940852	15.744888	18.657798
NK-1-V₃-072	DA	-	-2.2	1162	-	39.544152	0.003557	15.762067	0.001170	19.077013	0.001463	38.790775	15.736205	18.564651
NK-1-V₃-087	DA	-	-2.5	1174	-	39.509271	0.002991	15.765409	0.001203	19.064150	0.001469	38.920521	15.744307	18.646088
NK-1-V₃-109	DA	-	-1.8	1128	-	39.507379	0.003003	15.768599	0.001026	19.061103	0.001120	38.834259	15.744680	18.587232
NK-1-V₃-120	DA	-	-2.2	1162	-	39.643413	0.002713	15.771838	0.001036	19.156383	0.001212	38.937885	15.746879	18.661903
NK-1-V₃-130	DA	-	-2.7	1168	-	39.513523	0.002834	15.768485	0.000893	19.055300	0.001059	38.931529	15.747952	18.648513
NK-1-V₃-143	DA	-	-1.9	1132	-	39.578522	0.004030	15.770145	0.001356	19.108248	0.001770	38.961832	15.747733	18.664228

Appendix Tab. S5

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Fig. 6

Fig. 7

Fig. 8

Fig. 9

Fig. 10

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Triassic subduction of the Paleo-Pacific: magmatic records from the southern continental margin of the South China Sea^*

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Triassic subduction of the Paleo-Pacific: magmatic records from the southern continental margin of the South China Sea*

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Triassic subduction of the Paleo-Pacific: magmatic records from the southern continental margin of the South China Sea^*