利用岩芯扫描仪对ZK6岩芯元素和磁化率进行快速扫描, 选取了K、Rb、Ba、Ti等元素以及磁化率特征曲线作为指标。通过扫描结果与样品所代表的地层进行对比分析, 探讨了运用岩芯扫描仪进行快速沉积相划分的可行性。分析认为岩芯扫描仪的输出结果中, K、Rb、Ba、Ti、Cr、Co、V元素相对含量以及磁化率特征曲线与样品地层的3个沉积旋回有很好的相符性。
The drill core ZK6 was scanned by a core scanner to obtain relative amounts of objective elements and magnetic susceptibility of sediment. Choose elements (involving K, Rb, Ba, Ti, and the like) and the characteristic curve of magnetic susceptibility as indexes, the feasibility of sedimentary facies discrimination was assessed based on the employment of a core scanner, which was achieved by comparing the scanning results with the layers where the samples were taken. The results suggest that both relative amounts of elements, such as K, Rb, Ba, Ti, Cr, Co, and V, and the characteristic curve of magnetic susceptibility are well in accordance with the three sedimentary cycles with respect to the layers.
[1]刘本立. 地球化学基础[M]. 北京: 北京大学出版社, 1994: 186-187.
[2]严钦尚, 张国栋, 项立嵩, 等. 苏北金湖凹陷阜宁群的海侵和沉积环境[J]. 地质学报, 1979, 1: 74-83.
[3]王益友, 郭文莹, 张国栋. 几种地球化学标志在金湖凹陷阜宁群沉积环境中的应用[J]. 同济大学学报, 79(2): 51-60.
[4]蓝先洪. 海洋沉积地球化学[M]//杨子赓.海洋地质化学.青岛: 青岛出版社, 2000: 182-196.
[5]姚国伟, 林本海, 刘军. 中山市区的地质构造与岩土工程特性分析[J]. 广州建筑, 2011, 1: 17-26.
[6]林晓东, 余启沃. 中山市地貌特征及发育过程[J]. 热带地理, 1989, 1: 39-47.
[7]黄镇国, 李平日.珠江三角洲形成与发育演变[M].广州: 科学普及出版社广州分社, 1982: 168-176.
[8]ROTHWELL R G, HOOGAKKER B, THOMSON J, et al. Turbidite emplacement on the southern Balearic Abyssal Plain (western Mediterranean Sea) during Marine Isotope Stages 1-3: An application of ITRAX XRF scanning of sediment cores to lithostratigraphic analysis[J]. New techniques in sediment core analysis. London: Geological Society of London, Special Publications, 2006, 267: 79-98.
[9]冯炎基, 李平日, 谭惠忠, 等.珠江三角洲第四纪沉积年代学研究[J]. 热带地理, 1991, 10(3): 248-254.
[10]秦正永.化学地层学的兴起及其应用前景[J].地质论评, 1991, 37(3): 265-271.
[11]金秉福, 林振宏, 季福武. 海洋沉积环境和物源的元素地球化学记录释读[J]. 海洋科学进展,2003, 21(1): 99-103.
[12]蓝先洪, 马道修, 徐明广, 等. 珠江三角洲若干地球化学标志及指相意义[J]. 海洋地质与第四纪地质, 1987, 7(1): 39-49.
[13]蓝先洪. 珠江三角洲A22孔的沉积特征及地层划分[J]. 海洋与湖沼, 1991, 22(2): 148-153.
[14]蓝先洪. 珠江三角洲晚第四纪沉积特征[J].沉积学报, 1996, 14(2): 155-162.
[15]杨小强, 李华梅, 余素华. 从SX97孔分析深圳沿海近3万年来海平面及气候变迁[J]. 地球化学, 2003, 32(2): 146-152.
[16]宋华颖, 伊海生, 马雪, 等.柴达木盆地西部典型剖面磁化率特征及其意义[J]. 勘探地球物理进展, 2009, 10(4): 275-279.
[17]黄爱华. 不同形态锶钡的沉积环境判别效果比较[J]. 沉积学报, 1996, 14(14): 168-173.
[18]CROUDACE I W, RINDBY A, ROTHWELL R G. ITRAX: Description and evaluation of a new multi-function X-ray core scanner, New techniques in sediment core analysis[M]. London, UK: Geological Society of London, 2006: 51-63.
[19]ROTHWELLL R G. New Techniques in Sediment Core Analysis[M]. London: Geological Society, Special Publications, 2006, 267: 79-98.
[20]TJALLINGII R, RÖHL U, KÖLLING M, et al. Influence of the water content on X-ray fluorescence core scanning measurements in soft marine sediments[J]. Geochem Geophys Geosyst, 8: Q02004. doi:10.1029/2006GC0013