华南大陆南缘南雄盆地古近系顶面地层剥蚀特征及其大地构造意义

doi:10.11978/2025005

Abstract

Abstract:

The onshore Cenozoic basins of the southern margin of the South China Block (SCB) commonly exhibit an unconformity between the Paleogene and Quaternary systems. Restoration of the erosion at this unconformity provides critical constraints for reconstructing the complete Cenozoic tectonic evolution of the southern margin of the SCB. This study focuses on the Nanxiong Basin, employing vitrinite reflectance as a paleothermal indicator to restore the erosion thickness of the unconformity between the Guchengcun Formation (top age ~56 Ma) and overlying Quaternary strata. The onset time of erosion was constrained by integrating low-temperature thermochronology data from the basin periphery. Results show that the erosion thickness of Paleogene top strata is approximately (2700 ± 300) m in the Nanxiong Basin, with the erosion starting from the Early Oligocene and lasting until the Early Quaternary. This strong erosion caused the highly mature source rocks to be denudated to shallow burial depths. Analysis reveals that the basin faulting development did not end after the depositional period of Guchengcun Formation in Nanxiong Basin but continued until the early Oligocene. Subsequently, the tectonic environment changed from extension to compression, leading to basin uplift and erosion until the early Quaternary. This intense erosion removed the sedimentary record of the late Paleocene − early Oligocene. The erosion process of the southern margin of the SCB since the late Paleogene was affected by combined effects of southeast extrusion from the Indo-Eurasian plate collision and subduction of the Pacific plate underneath the Eurasia plate. The uplift amplitude tended to decrease gradually from inland to coastal areas, resulting in differential evolution between onshore uplift and offshore subsidence.

Key words: vitrinite reflectance, erosion restoration, southern margin of the South China Block, Nanxiong Basin

CLC Number:

P736.121

ZHAO Peng, SHI Xiaobin, LIU Lu, SHEN Yongqiang, REN Ziqiang. Erosion characteristics of the Paleogene top strata in the Nanxiong Basin, southern margin of the South China Block and its tectonic significance[J].Journal of Tropical Oceanography, 2025, 44(5): 125-139.

Figures/Tables 11

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Tab. 1

Tab. 2

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

References 69

[1]	陈盼盼, 2018. 三水盆地晚白垩世—始新世火山-沉积序列对南海北缘构造演化的响应[D]. 北京: 中国地质大学(北京).
	CHEN PANPAN, 2018. The response of Late Cretaceous-Eocene epoch volcanic and sedimentary sequence in Sanshui Basin to the tectonic evolution of the northern margin of South China Sea[D]. Beijing: China University of Geosciences (in Chinese with English abstract).
[2]	邓平, 舒良树, 2012. 南岭东段中-新生代盆-山动力学及其铀成矿作用[M]. 北京: 地质出版社.
	DENG PING, SHU LIANGSHU, 2012. Study on the geodynamics of the Mesozoic-Cenozoic basin-range evolution in the eastern Nanling belt and their uranium metallization[M]. Beijing: Geological Publishing House (in Chinese).
[3]	龚再升, 李思田, 谢泰俊, 等, 1997. 南海北部大陆边缘盆地分析与油气聚集[M]. 北京: 科学出版社.
	GONG ZAISHENG, LI SITIAN, XIE TAIJUN, et al, 1997. Continental margin basin analysis and hydrocarbon accumulation of the Northern South China Sea[M]. Beijing: China Science Press (in Chinese with English abstract).
[4]	广东省地质矿产局, 1988. 广东省区域地质志[M]. 北京: 地质出版社.
	GUANGDONG BUREAU OF GEOLOGY AND MINERAL RESOURCES, 1988. Regional geology of Guangdong Province[M]. Beijing: Geological Publishing House (in Chinese).
[5]	侯明才, 陈洪德, 田景春, 等, 2007. 广东三水盆地古近纪岩相古地理特征及演化[J]. 沉积与特提斯地质, 27(2): 37-44.
	HOU MINGCAI, CHEN HONGDE, TIAN JINGCHUN, et al, 2007. Sedimentary facies and palaeogeography of the Sanshui Basin, Guangdong during the Pelaeogene[J]. Sedimentary Geology and Tethyan Geology, 27(2): 37-44 (in Chinese with English abstract).
[6]	胡杰, 龙祖烈, 黄玉平, 等, 2021. 珠江口盆地白云凹陷新生代构造-热演化模拟[J]. 地球物理学报, 2021, 64(5): 1654-1665.
	HU JIE, LONG ZULIE, HUANG YUPING, et al, 2021. Tectono-thermal modelling of Baiyun Sag, Pearl River Mouth Basin, since Cenozoic[J]. Chinese Journal of Geophysics, 64(5): 1654-1665 (in Chinese with English abstract).
[7]	胡圣标, 何丽娟, 汪集旸, 2001. 中国大陆地区大地热流数据汇编(第三版)[J]. 地球物理学报, 44(5): 611-626.
	HU SHENGBIAO, HE LIJUAN, WANG JIYANG, 2001. Compilation of heat flow data in the China continental area (3rd edition)[J]. Chinese Journal of Geophysics, 44(5): 611-626 (in Chinese with English abstract).
[8]	贾承造, 何登发, 陆洁民, 2004. 中国喜马拉雅运动的期次及其动力学背景[J]. 石油与天然气地质, 25(2): 121-125, 169.
	JIA CHENGZAO, HE DENGFA, LU JIEMIN, 2004. Episodes and geodynamic setting of Himalayan movement in China[J]. Oil & Gas Geology, 25(2): 121-125, 169 (in Chinese with English abstract).
[9]	赖静, 祁家明, 陈军军, 等, 2020. 粤北青嶂山岩体江头矿区铀矿微区矿物学、年代学特征及其成矿动力背景制约[J]. 地质学报, 94(4): 1128-1142.
	LAI JING, QI JIAMING, CHEN JUNJUN, et al, 2020. Uranium micromineralogy and geochronology of the Jiangtou Uranium Ore Field in the Qingzhangshan granite pluton, north Guangdong: constraints on the genetic relationship with metallogenic dynamic background[J]. Acta Geologica Sinica, 94(4): 1128-1142 (in Chinese with English abstract).
[10]	凌秋贤, 张显球, 林建南, 2005. 南雄盆地白垩纪—古近纪地层研究进展[J]. 地层学杂志, 29(S1): 596-601.
	LING QIUXIAN, ZHANG XIANQIU, LIN JIANNAN, 2005. New advance in the study of the Cretaceous and Paleogene strata of the Nanxiong Basin[J]. Journal of Stratigraphy, 29(S1): 596-601 (in Chinese with English abstract).
[11]	施小斌, 石红才, 杨小秋, 等, 2013. 江汉盆地当阳向斜区主要不整合面剥蚀厚度的中低温热年代学约束[J]. 地质学报, 87(8): 1076-1088.
	SHI XIAOBIN, SHI HONGCAI, YANG XIAOQIU, et al, 2013. Erosion thickness of the main unconformities of Dangyang Subbasin, Jianghan Basin: constrained by the middle-low thermochronology[J]. Acta Geologica Sinica, 87(8): 1076-1088 (in Chinese with English abstract).
[12]	舒良树, 2012. 华南构造演化的基本特征[J]. 地质通报, 31(7): 1035-1053.
	SHU LIANGSHU, 2012. An analysis of principal features of tectonic evolution in South China Block[J]. Geological Bulletin of China, 31(7): 1035-1053 (in Chinese with English abstract).
[13]	舒良树, 邓平, 王彬, 等, 2004a. 南雄-诸广地区晚中生代盆山演化的岩石化学、运动学与年代学制约[J]. 中国科学(D辑: 地球科学), 34(1): 1-13.
	SHU LIANGSHU, DENG PING, WANG BIN, et al, 2004a. Petrochemistry, kinematics and chronology constraints on the late Mesozoic basin-mountain evolution in Nanxiong-Zhuguang area[J]. Science in China, Ser D, 34(1): 1-13 (in Chinese).
[14]	舒良树, 周新民, 邓平, 等, 2004b. 中国东南部中、新生代盆地特征与构造演化[J]. 地质通报, 23(S2): 876-884.
	SHU LIANGSHU, ZHOU XINMIN, DENG PING, et al, 2004b. Geological features and tectonic evolution of Meso-Cenozoic basins in southeastern China[J]. Regional Geology of China, 23(S2): 876-884 (in Chinese with English abstract).
[15]	王雨豪, 2017. 粤北南雄盆地构造演化及其对红层地貌发育的影响[D]. 石家庄: 河北地质大学.
	WANG YUHAO, 2017. Structural evolution of Nanxiong Basin, north Guangdong and the impact to development of red bed landform[D]. Shijiazhuang: Hebei GEO University (in Chinese with English abstract).
[16]	谢小占, 2015. 粤北南雄盆地铀矿化特征及成矿规律分析[D]. 抚州: 东华理工大学.
	XIE XIAOZHAN, , 2015. Uranium mineralization characteristics and metallogenic regularity of Nanxiong Basin in the north of Guangdong[D]. Fuzhou: East China Institute of Technology (in Chinese with English abstract).
[17]	闫义, ALMATARI ALI AHMED ALI, 田陟贤, 等, 2016. 南海北缘盆-岭格局及地貌演化过程[J]. 热带海洋学报, 35(6): 46-57.
	YAN YI, ALI A A A, TIAN ZHIXIAN, et al, 2016. Basin-mountain evolution, thermo-tectonic history and surface crustal recycling processes of the northern margin of the South China Sea[J]. Journal of Tropical Oceanography, 35(6): 46-57 (in Chinese with English abstract).
[18]	袁晓博, 2019. 三水盆地新生代岩浆记录与南海早期演化[D]. 北京: 中国地质大学(北京).
	YUAN XIAOBO, , 2019. The record of Cenozoic magmatism in Sanshui Basin and its relationship with the early tectonic evolution stage of the South China Sea[D]. Beijing: China University of Geosciences (in Chinese with English abstract).
[19]	袁晓博, 方念乔, 2019. 三水盆地中渐新世火山记录的新建与南海扩张[J]. 地质通报, 38(4): 689-695.
	YUAN XIAOBO, FANG NIANQIAO, 2019. The new volcanics record in Sanshui Basin and its relationship with the spreading of the South China Sea[J]. Geological Bulletin of China, 38(4): 689-695 (in Chinese with English abstract).
[20]	张国伟, 郭安林, 王岳军, 等, 2013. 中国华南大陆构造与问题[J]. 中国科学: 地球科学, 43(10): 1553-1582.
	ZHANG GUOWEI, GUO ANLIN, WANG YUEJUN, et al, 2013. China South China continental structure and problems[J]. Scientia Sinica (Terrae), 43(10): 1553-1582 (in Chinese).
[21]	张珂, 黄玉昆, 1995. 粤北地区夷平面的初步研究[J]. 热带地理, 15(4): 295-305.
	ZHANG KE, HUANG YUKUN, 1995. Researches on the planation surfaces in north Guangdong[J]. Tropical Geography, 15(4): 295-305 (in Chinese with English abstract).
[22]	张敏, 旷健, 肖志才, 等, 2021. 广东惠州燕山期以来地质构造演化: 对华南构造的新启示[J]. 地球科学, 46(1): 242-258.
	ZHANG MIN, KUANG JIAN, XIAO ZHICAI, et al, 2021. Geological evolution since the Yanshanian in Huizhou, Guangdong Province: new implications for the tectonics of South China[J]. Earth Science, 46(1): 242-258 (in Chinese with English abstract).
[23]	张显球, 1999. 广东省白垩—第三纪盆地地质概况[J]. 广东地质, (3): 53-57.
	ZHANG XIANQIU, 1999. Geological survey of Cretaceous-tertiary basin in Guangdong Province[J]. Guangdong Geology, (3): 53-57 (in Chinese with English abstract).
[24]	张显球, 林建南, 李罡, 等, 2006. 南雄盆地大塘白垩系-古近系界线剖面研究[J]. 地层学杂志, 30(4): 327-340.
	ZHANG XIANQIU, LIN JIANNAN, LI GANG, et al, 2006. Non-marine Cretaceous-Paleogene boundary section at datang of Nanxiong, northern Guangdong[J]. Journal of Stratigraphy, 30(4): 327-340 (in Chinese with English abstract).
[25]	张显球, 张素君, 林小燕, 等, 2021. 南雄盆地的红层和古生物[M]. 北京: 华夏文艺出版社.
	ZHANG XIANQIU, ZHANG SUJUN, LIN XIAOYAN, et al, 2021. Red beds and paleontology in the Nanxiong Basin. Beijing[M]. Beijing: Huaxia Literary and Art Publishing House (in Chinese).
[26]	张显球, 张喜满, 侯明才, 等, 2013. 南雄盆地红层岩石地层划分[J]. 地层学杂志, 37(4): 441-451.
	ZHANG XIANQIU, ZHANG XIMAN, HOU MINGCAI, et al, 2013. Lithostratigraphic subdivision of red beds in Nanxiong Basin, Guangdong, China[J]. Journal of Stratigraphy, 37(4): 441-451 (in Chinese with English abstract).
[27]	张岳桥, 董树文, 2019. 晚中生代东亚多板块汇聚与大陆构造体系的发展[J]. 地质力学学报, 25(5): 613-641.
	ZHANG YUEQIAO, DONG SHUWEN, 2019. East Asia multi-plate convergence in late Mesozoic and the development of continental tectonic systems[J]. Journal of Geomechanics, 25(5): 613-641 (in Chinese with English abstract).
[28]	张岳桥, 董树文, 李建华, 等, 2012. 华南中生代大地构造研究新进展[J]. 地球学报, 33(3): 257-279.
	ZHANG YUEQIAO, DONG SHUWEN, LI JIANHUA, et al, 2012. The new progress in the study of Mesozoic tectonics of South China[J]. Acta Geoscientica Sinica, 33(3): 257-279 (in Chinese with English abstract).
[29]	张族坤, 徐亚军, 刘强, 等, 2019. 华南东部白垩纪晚期—古近纪构造转换的沉积记录: 以粤北南雄盆地为例[J]. 大地构造与成矿学, 43(3): 575-589.
	ZHANG ZUKUN, XU YAJUN, LIU QIANG, et al, 2019. Sedimentary records of the Late Cretaceous-Paleogene tectonic transition in the eastern South China Block: a case study of the Nanxiong Basin, northern Guangdong Province[J]. Geotectonica et Metallogenia, 43(3): 575-589 (in Chinese with English abstract).
[30]	赵佳楠, 邱际玮, 崔永春, 等, 2022. 二长花岗岩与辉绿岩岩石地球化学、LA-ICP-MS锆石U-Pb年代学特征及构造意义: 以粤北南雄盆地北缘南雄断裂带中部为例[J]. 东北石油大学学报, 46(6): 1-13, 145-146.
	ZHAO JIANAN, QIU JIWEI, CUI YONGCHUN, et al, 2022. Petro-geochemistry, LA-ICP-MS zircon U-Pb chronology and tectonic implications of monzonitic granite and diabase: taking the middle of Nanxiong Fault Belt in the Nanxiong Basin within the northern Guangdong as an example[J]. Journal of Northeast Petroleum University, 46(6): 1-13, 145-146 (in Chinese with English abstract).
[31]	赵梦婷, 马明明, 何梅, 等, 2021. 南雄盆地白垩纪—古近纪(K-Pg)界线位置探讨: 来自火山活动及古气候演化的证据[J]. 中国科学: 地球科学, 51(5): 741-752.
	ZHAO MENGTING, MA MINGMING, HE MEI, et al, 2021. Evaluation of the four potential Cretaceous- Paleogene (K-Pg) boundaries in the Nanxiong Basin based on evidences from volcanic activity and paleoclimatic evolution[J]. Scientia Sinica (Terrae), 51(5): 741-752 (in Chinese with English abstract).
[32]	赵中贤, 周蒂, 廖杰, 2009. 珠江口盆地第三纪古地理及沉积演化[J]. 热带海洋学报, 28 (6): 52-60.
	ZHAO ZHONGXIAN, ZHOU DI, LIAO JIE, 2009. Tertiary paleogeography and depositional evolution in the Pearl River Mouth Basin of the northern South China Sea[J]. Journal of Tropical Oceanography, 28 (6): 52-60 (in Chinese with English abstract).
[33]	赵资奎, 叶捷, 王强, 2017. 南雄盆地白垩纪—古近纪交界恐龙灭绝和哺乳动物复苏[J]. 科学通报, 62(17): 1869-1881.
	ZHAO ZIKUI, YE JIE, WANG QIANG, 2017. Dinosaur extinction and subsequent mammalian recovery during the Cretaceous-Paleogene (K/Pg) transition in the Nanxiong Basin[J]. Chinese Science Bulletin, 62(17): 1869-1881 (in Chinese with English abstract).
[34]	郑金云, 高阳东, 张向涛, 等, 2022. 珠江口盆地构造演化旋回及其新生代沉积环境变迁[J]. 地球科学, 47(7): 2374-2390.
	ZHENG JINYUN, GAO YANGDONG, ZHANG XIANGTAO, et al, 2022. Tectonic evolution cycles and Cenozoic sedimentary environment changes in Pearl River Mouth Basin[J]. Earth Science, 47(7): 2374-2390 (in Chinese with English abstract).
[35]	周尚哲, 刘继鹏, 郗增福, 等, 2008. 南岭及其相邻山地残留的最高夷平面[J]. 冰川冻土, 30(6): 938-945.
	ZHOU SHANGZHE, LIU JIPENG, XI ZENGFU, et al, 2008. The residual top planation surfaces in the Nanling Mountains and their adjacent regions[J]. Journal of Glaciology and Geocryology, 30(6): 938-945 (in Chinese with English abstract).
[36]	朱传庆, 邱楠生, 曹环宇, 等, 2017. 四川盆地东部构造-热演化: 来自镜质体反射率和磷灰石裂变径迹的约束[J]. 地学前缘, 24(3): 94-104.
	ZHU CHUANQING, QIU NANSHENG, CAO HUANYU, et al, 2017. Tectono-thermal evolution of the eastern Sichuan Basin: constraints from the vitrinite reflectance and apatite fission track data[J]. Earth Science Frontiers, 24(3): 94-104 (in Chinese with English abstract).
[37]	BRIAIS A, PATRIAT P, TAPPONNIER P, 1993. Updated interpretation of magnetic anomalies and seafloor spreading stages in the South China Sea: implications for the Tertiary tectonics of Southeast Asia[J]. Journal of Geophysical Research: Solid Earth, 98(B4): 6299-6328.
[38]	CHAN L S, SHEN WENLUE, PUBELLIER M, 2010. Polyphase rifting of greater Pearl River Delta Region (South China): evidence for possible rapid changes in regional stress configuration[J]. Journal of Structural Geology, 32(6): 746-754.
[39]	CHUNG S L, CHENG HAI, JAHN B M, et al, 1997. Major and trace element, and Sr-Nd isotope constraints on the origin of Paleogene volcanism in South China prior to the South China Sea opening[J]. Lithos, 40(2/3/4): 203-220.
[40]	DOW W G, 1977. Kerogen studies and geological interpretations[J]. Journal of Geochemical Exploration, 7: 79-99.
[41]	GLEADOW A J W, BELTON D X, KOHN B P, et al, 2002. Fission track dating of phosphate minerals and the thermochronology of apatite[J]. Reviews in Mineralogy and Geochemistry, 48(1): 579-630.
[42]	HUTCHISON C S, 2010. The north-west Borneo trough[J]. Marine Geology, 271(1/2): 32-43.
[43]	KAMIYA N, YAMAMOTO Y, WANG QIAN, et al, 2017. Major variations in vitrinite reflectance and consolidation characteristics within a post-middle Miocene forearc basin, central Japan: a geodynamical implication for basin evolution[J]. Tectonophysics, 710: 69-80.
[44]	KETCHAM R, DONELICK R, DONELICK M, 2003. AFTSolve: a program for multi-kinetic modeling of apatite fission-track data[J]. American Mineralogist, 88(5/6): 929-929.
[45]	KOHN B P, GLEADOW A J W, BROWN R W, et al, 2005. Visualizing thermotectonic and denudation histories using apatite fission track thermochronology[J]. Reviews in Mineralogy and Geochemistry, 58(1): 527-565.
[46]	LI CHUNFENG, XU XING, LIN JIAN, et al, 2014a. Ages and magnetic structures of the South China Sea constrained by deep tow magnetic surveys and IODP Expedition 349[J]. Geochemistry, Geophysics, Geosystems, 15(12): 4958-4983.
[47]	LI JIANHUA, CAWOOD P A, RATSCHBACHER L, et al, 2020. Building Southeast China in the late Mesozoic: insights from alternating episodes of shortening and extension along the Lianhuashan fault zone[J]. Earth-Science Reviews, 201: 103056.
[48]	LI JIANHUA, DONG SHUWEN, GAO RUI, et al, 2022. The thinnest crust in South China associated with the Cretaceous lithospheric extension: evidence from SINOPROBE seismic reflection profiling[J]. Tectonics, 41(8): e2022TC007240.
[49]	LI JIANHUA, ZHANG YUEQIAO, DONG SHUWEN, et al, 2014b. Cretaceous tectonic evolution of South China: a preliminary synthesis[J]. Earth-Science Reviews, 134: 98-136.
[50]	LI XIAOMING, ZOU HEPING, 2017. Late Cretaceous-Cenozoic exhumation of the southeastern margin of Coastal Mountains, SE China, revealed by fission-track thermochronology: implications for the topographic evolution[J]. Solid Earth Sciences, 2(3): 79-88.
[51]	LI YIMIAN, LUO JI, TIAN JIAO, et al, 2023. Formation of the hydrothermal system from granite reservoir for power generation in igneous rock areas of South China[J]. Geothermics, 110: 102673.
[52]	LI ZHENGXIANG, LI XIANHUA, 2007. Formation of the 1300-km-wide intracontinental orogen and postorogenic magmatic province in Mesozoic South China: a flat-slab subduction model[J]. Geology, 35(2): 179.
[53]	LUO GUSONG, PENG HUA, ZHANG SHAOYUN, et al, 2021. Exploring the variations of redbed badlands and their driving forces in the Nanxiong Basin, Southern China: a geographically weighted regression with gridded data[J]. Journal of Sensors, 2021(1): 6694407.
[54]	SCLATER J G, CHRISTIE P A F, 1980. Continental stretching: an explanation of the Post-Mid-Cretaceous subsidence of the central North Sea Basin[J]. Journal of Geophysical Research: Solid Earth, 85(B7): 3711-3739.
[55]	SHEN WENLUE, 2008. Post-orogenic extension in the Pearl River Delta region (South China): an integrated morphological, structural, geophysical and thermochronological study[D]. Hong Kong: University of Hong Kong.
[56]	SHI HESHENG, LI CHUNFENG, 2012. Mesozoic and early Cenozoic tectonic convergence-to-rifting transition prior to opening of the South China Sea[J]. International Geology Review, 54(15): 1801-1828.
[57]	SHI XIAOBIN, KOHN B P, YU CHUANHAI, et al, 2022. Thermo-tectonic history of coastal NW South China Sea: a low-temperature thermochronology study[J]. Tectonophysics, 833: 229344.
[58]	SHU LIANGSHU, ZHOU XINMIN, DENG PING, et al, 2009. Mesozoic tectonic evolution of the Southeast China Block: new insights from basin analysis[J]. Journal of Asian Earth Sciences, 34(3): 376-391.
[59]	SIMONS W J F, SOCQUET A, VIGNY C, et al, 2007. A decade of GPS in Southeast Asia: resolving sundaland motion and boundaries[J]. Journal of Geophysical Research: Solid Earth, 112(B6): B06420.
[60]	SWEENEY J J, BURNHAM A K, 1990. Evaluation of a simple model of vitrinite reflectance based on chemical kinetics[J]. AAPG Bulletin, 74: C9B251F-1710-11D7-8645000102C1865D.
[61]	TANG D L K, SEWARD D, WILSON C J N, et al, 2014. Thermotectonic history of SE China since the late Mesozoic: insights from detailed thermochronological studies of Hong Kong[J]. Journal of the Geological Society, 171(4): 591-604.
[62]	TAO NI, LI ZHENGXIANG, DANIŠÍK M, et al, 2017. Thermochronological record of Middle-Late Jurassic magmatic reheating to Eocene rift-related rapid cooling in the SE South China Block[J]. Gondwana Research, 46: 191-203.
[63]	TAO NI, LI ZHENGXIANG, DANIŠÍK M, et al, 2019. Post-250 Ma thermal evolution of the central Cathaysia Block (SE China) in response to flat-slab subduction at the proto-Western Pacific margin[J]. Gondwana Research, 75: 1-15.
[64]	TAPPONNIER P, PELTZER G, LE DAIN A Y, et al, 1982. Propagating extrusion tectonics in Asia: new insights from simple experiments with plasticine[J]. Geology, 10(12): 611.
[65]	TAYLOR B, HAYES D E, 1980. The tectonic evolution of the South China basin[J]. Geophysical Monograph Series, 23: 89-104.
[66]	TSANG P D, 2010. Thermochronology inferring post-orogenic exhumation model around Greater Pearl River Delta region[D]. Hong Kong: The University of Hong Kong.
[67]	YAN DANPING, ZHOU MEIFU, SONG HONGLIN, et al, 2003. Origin and tectonic significance of a Mesozoic multi-layer over-thrust system within the Yangtze Block (South China)[J]. Tectonophysics, 361(3/4): 239-254.
[68]	YAN YI, CARTER A, et al, 2009. A fission-track and (U-Th)/He thermochronometric study of the northern margin of the South China Sea: an example of a complex passive margin[J]. Tectonophysics, 474(3/4): 584-594.
[69]	ZHAO PENG, SHI XIAOBIN, LIU LU, et al, 2025. A late Paleogene erosion event in the Sanshui Basin, southern margin of the South China Block and its tectonic significance[J]. Tectonophysics, 894: 230557.

编号	岩性	结晶年龄	东经	北纬	高程/m	磷灰石裂变径迹		29Ma以来剥蚀量/m
编号	岩性	结晶年龄	东经	北纬	高程/m	年龄/Ma	误差(±1δ)/Ma	剥蚀量范围	根据最佳热史
Nx1^a	花岗岩	中侏罗世	114°15′00″	25°12′46.8″	198	40	3	(640, 1920)	1120
Nx3^a	花岗岩	中侏罗世	114°15′21.6″	25°13′12″	221	37	2	(1560, 2800)	2360
04GD43^c	花岗岩	晚三叠世	114°02′20.4″	25°23′13.2″	486	37	3	—	2260
12GH22-1^c	砂岩	早侏罗世	113°31′26.4″	25°00′7.2″	191	38	10	(440, 1920)	1280
11GG10-1^b	花岗岩	中−晚三叠世	114°23′56.4″	24°53′42″	385	51	3	(720, 2240)	1440
10GDDX32-1^b	砂岩	早侏罗世	114°28′48″	24°07′19.2″	122	42	5	(1000, 2480)	1920
12GH14^b	花岗岩	晚奥陶−早志留世	114°55′8.4″	24°27′14.4″	162	53	3	(40, 600)	520
Hz1^a	花岗岩	早白垩世	114°56′06″	22°49′51.6″	109	61	4	(1040, 1280)	1240
Hz3^a	花岗岩	早白垩世	114°58′30″	22°50′20.4″	149	60	3	(1120, 1400)	1240

编号	经度	纬度	深度/m	Ro/%
NXR1	114°14′17.9″E	25°8′35.1″N	500	0.95
NXR2	114°14′18.8″E	25°8′37.3″N	550	1.06
NXR3	114°14′13.2″E	25°8′23.7″N	590	1.55
NXR4	114°14′30″E	25°8′39″N	600	1.52
NXR5	114°14′29.6″E	25°8′37.2″N	630	1.51
NXR6	114°14′30.1″E	25°8′36.7″N	650	1.10
NXR7	114°29′56.1″E	25°17′9.6″N	950	1.33
NXR8	114°14′32.3″E	25°8′33.4″N	1050	1.39

Erosion characteristics of the Paleogene top strata in the Nanxiong Basin, southern margin of the South China Block and its tectonic significance

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 11

References 69

Related Articles 1

Metrics

Comments

Recommended 0