Geochemical characteristics and their significances of rare-earth elements in deep-water well core at the Lingnan Low Uplift Area of the Qiongdongnan Basin

SUN Zhipeng; ZHAI Shikui; XIU Chun; LIU Xinyu; ZONG Tong; LUO Wei; LIU Xiaofeng; CHEN Kui; LI Na

doi:10.1007/s13131-014-0578-3

琼东南盆地陵南低凸起深水钻井岩心的稀土元素地球化学特征及其意义

doi: 10.1007/s13131-014-0578-3

1.
中海石油(中国)有限公司, 湛江分公司研究院, 广东湛江 524057
2.
中国海洋大学:海底科学与探测技术教育部重点实验室, 海洋地球科学学院, 山东青岛 266100

基金项目: The National Major Project of Science and Technology of China under contract No. 2011ZX05025-002-03.

计量
- 文章访问数: 1664
- HTML全文浏览量: 59
- PDF下载量: 2232
- 被引次数: 0
出版历程
- 收稿日期: 2014-06-20
- 修回日期: 2014-09-29

Geochemical characteristics and their significances of rare-earth elements in deep-water well core at the Lingnan Low Uplift Area of the Qiongdongnan Basin

1.
Zhanjiang Branch of China National Offshore Oil Corporation (CNOOC) Limited, Zhanjiang 524057, China
2.
Key Laboratory of Submarine Geosciences and Technology of Ministry of Education, Ocean University of China, Qingdao 266100, China

摘要

摘要: 本文对位于琼东南盆地陵南低凸起的LS-A深水钻井岩心97个样品做了稀土元素地球化学分析,旨在揭示研究区渐新世以来的沉积物源及沉积环境变化,探讨稀土元素地球化学特征对盆地构造演化的响应.岩心样品中∑REE和∑LREE波动范围较大,而∑HREE相对稳定.随着地层年代由老变新,∑REE和∑LREE总体上呈现逐渐升高的趋势.从岩心下部崖城组(井深4207 m以上)至顶部乐东组∑REE较高,REE具有轻稀土富集、重稀土含量稳定、Eu具有不同程度负异常的配分特征,REE地球化学特征总体上与中国浅海沉积物和中国黄土较为接近,具有显著的“亲陆性”.崖城组底部(井深4207-4330 m)∑REE较低,表现为轻稀土亏损、重稀土相对富集和Eu正异常的REE配分模式,REE地球化学特征总体上接近于洋壳和玄武岩,所指示的物源以火山喷发物为主.结合层序地层和矿物学分析可知,渐新世早期研究区物源主要来自于周边凸起区的火山物质,北部陆缘物质贡献极小,至渐新世晚期物源区有所发展.自中新世以来物源区由近源向远源不断扩大,显示出多源沉积特征.在距今31.5 Ma、28.4 Ma、25.5 Ma、23 Ma和16 Ma的岩心地层处,REE地球化学参数及Th/Sc比值均发生显著跃迁,反映了琼东南盆地演化中的构造运动事件.南海构造演化历史中的南海运动(34-25 Ma BP,南海早期扩张)、白云运动(23 Ma BP)和晚期扩张运动(23.5-16.5 Ma BP)、以及扩张—沉降转换等重要事件在岩心沉积物REE地球化学特征上都有着明显的记录.
- 琼东南盆地 /
- 深水钻井 /
- 稀土元素 /
- 物源和沉积环境 /
- 构造运动响应
Abstract: A geochemical analysis of rare-earth elements (REEs) in 97 samples collected from the core of deep-water Well LS-A located at the Lingnan Low Uplift Area of the Qiongdongnan Basin is conducted, with the purpose of revealing the changes of sedimentary source and environment in the study region since Oligocene and evaluating the response of geochemical characteristics of REEs to the tectonic evolution. In the core samples, both ΣREE and ΣLREE (LREE is short for light-group REEs) fluctuate in a relatively wide range, while ΣHREE (HREE is short for heavy-group REEs) maintains a relatively stable level. With the stratigraphic chronology becoming newer, both ΣREE and ΣLREE show a gradually rising trend overall. The ΣREE of the core is relatively high from the bottom of Yacheng Formation (at a well depth of 4 207 m) to the top of Ledong Formation, and the REEs show partitioning characteristics of the enrichment of LREE, the stable content of HREE, and the negative anomaly of Eu to varying degrees. Overall the geochemical characteristics of REEs are relatively approximate to those of China's neritic sediments and loess, with significant “continental orientation”. The ΣREE of the core is relatively low in the lower part of Yacheng Formation (at a well depth of 4 207-4 330 m), as shown by the REEs partitioning characteristics of the depletion of LREE, the relative enrichment of HREE, and the positive anomaly of Eu; the geochemical characteristics of REEs are approximate to those of oceanic crust and basalt overall, indicating that the provenance is primarily composed of volcanic eruption matters. As shown by the analyses based on sequence stratigraphy and mineralogy, the provenance in study region in the early Oligocene mainly resulted from the volcanic materials of the peripheral uplift areas; the continental margin materials from the north contributed only insignificantly; the provenance developed to a certain extent in the late Oligocene. Since the Miocene, the provenance has ceaselessly expanded from proximal to distal realm, embodying a characteristic of multi-source sedimentation. In the core strata with 31.5, 28.4, 25.5, 23, and 16 Ma from today, the geochemical parameters of REEs and Th/Sc ratio have significant saltation, embodying the tectonic movement events in the evolution of the Qiongdongnan Basin. In the tectonic evolution history of the South China Sea, the South China Sea Movement (34-25 Ma BP, early expansion of the South China Sea), Baiyun Movement (23 Ma BP), late expansion movement (23.5-16.5 Ma BP), expansion-settlement transition, and other important events are all clearly recorded by the geochemical characteristics of REEs in the core.
- Qiongdongnan Basin /
- deep-water well core /
- rare-earth elements /
- sedimentary source and environment /
- response to tectonic movement

HTML全文

参考文献(47)

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. Journal of Geophysical Research, 98(B4): 6299-6328

Cullers R L. 1994. The controls on the major and trace element variation of shales, siltstones, and sandstones of Pennsylvanian-Permian age from uplifted continental blocks in Colorado to platform sediment in Kansas, USA. Geochimica et Cosmochimica Acta, 58(22): 4955-4972

Eker C S, Sipahi F, Kaygusuz A. 2012. Trace and rare earth elements as indicators of provenance and depositional environments of Lias cherts in Gumushane, NE Turkey. Chemie Der Erde-Geochemistry, 72(2): 167-177

Frey F A, Haskin L. 1964. Rare earths in oceanic basalts. Journal of Geophysical Research, 69(4): 775-780

Gao Jun, Long Lingli, Klemd R, et al. 2009. Tectonic evolution of the South Tianshan orogen and adjacent regions, NW China: geochemical and age constraints of granitoid rocks. International Journal of Earth Sciences, 98(6): 1221-1238

Hall R. 2002. Cenozoic geological and plate tectonic evolution of SE Asia and the SW Pacific: computer-based reconstructions, model and animations. Journal of Asian Earth Sciences, 20(4): 353-431

Haskin L A, Frey F A, Schmitt R A, et al. 1966. Meteoritic, solar and terrestrial rare-earth distributions. Physics and Chemistry of the Earth, 7: 167-321

He Jiaxiong, Wu Wenhai, Zhu Youhai, et al. 2010. Genetic types, migration and accumulation of oil & gas and exploration proposal in north marginal basins, South China Sea. Natural Gas Geoscience (in Chinese), 21(1): 7-17

Hu Bo, Wang Liangshu, Yan Wenbo, et al. 2013. The tectonic evolution of the Qiongdongnan Basin in the northern margin of the South China Sea. Journal of Asian Earth Sciences, 77: 163-182

Huang Baojia, Li Li, Huang Heting. 2012. Origin and accumulation mechanism of shallow gases in the North Baodao Slope, Qiongdongnan Basin, South China Sea. Petroleum Exploration and Development, 39(5): 567-573

Huang Baojia, Li Xushen, Wang Zhenfeng, et al. 2012. Source rock geochemistry and gas potential in the deep water area, Qiongdongnan basin. China Offshore Oil and Gas (in Chinese), 24(4): 1-7

Lei Chao, Ren Jianye, Pei Jianxiang, et al. 2011. Tectonic framework and multiple episode tectonic evolution in deepwater area of Qiongdongnan Basin, northern continental margin in South China Sea. Earth Science: Journal of China University of Geosciences (in Chinese), 36(1): 151-162

Li Anchun, Huang Jie, Jiang Hengyi, et al. 2012. Sedimentary evolution in the northern slope of South China Sea since Oligocene and its responses to tectonics. Chinese Journal of Geophysics (in Chinese), 54(12): 3233-3245

Li Sitian, Lin Changsong, Zhang Qiming, et al. 1998. Episodic rifting and tectonic events in the northern continental margin basin of South China Sea since 1.5 Ma. Chinese Science Bulletin (in Chinese), 43(8): 797-810

Li Na, Zhai Shikui, Liu Xinyu, et al. 2014. The trace elements geochemistry and depositional environment changes record in the core of Well LS33-1-1 in deepwater area of Qiongdongnan Basin. Marine Geology & Quaternary Geology (in Chinese), 34(3): 1-12

Li Qianyu, Zhen Fan, Liu Chuanlian. 2007. Stratigraphic events across the Oligocene/Miocene boundary. Marine Geology & Quaternary Geology (in Chinese), 27(5): 57-64

Lim D, Jung H S, Choi J Y. 2014. REE partitioning in riverine sediments around the Yellow Sea and its importance in shelf sediment provenance. Marine Geology, 357: 12-24

Liu Zhaoshu, Fan Shiqing, Zhao Huanting. 2002. Geology of the South China Sea (in Chinese). Beijing: Science Press Liu Baojun, Pang Xiong, Yan Chengzhi, et al. 2011. Evolution of the Oligocene-Miocene shelf slope-break zone in the Baiyun deep-water area of the Pearl River Mouth Basin and its significance in oilgas exploration. Acta Petrolei Sinica (in Chinese), 32(2): 234-242

Liu Bing, Wu Shimin, Long Genyuan, et al. 2012. Basement characteristics and tectonic evolution in Qingdongnan basin. Progress in Geophysics (in Chinese), 27(4): 1465-1475

McLennan S M, Hemming S, McDaniel D K, et al. 1993. Geochemical approaches to sedimentation, provenance, and tectonics. In: Johnsson M J, Basu A, eds. Processes Controlling the Composition of Clastic Sediments. Special Paper 284. Boulder, Colorado: Geological Society of America, 21-40

Mi Lijun, Yuan Yusong, Zhang Gongcheng, et al. 2009. Characteristics and genesis of geothermal field in deep-water area of the northern South China Sea. Acta Petrolei Sinica (in Chinese), 30(1): 27-32

Pang Xiong, Chen Changmin, Peng Dajun. 2007. The Pearl River Deepwater Fan System and Oil and Gas in South China Sea. Beijing: Science Press Pang Xiong, Chen Changmin, Shao Lei, et al. 2007. Baiyun movement, a great tectonic event on the Oligocene-Miocene boundary in the northern South China Sea and its implications. Geological Review (in Chinese), 53(2): 145-151

Rollinson H R. 1993. Using Geochemical Data: Evaluation, Presentation, Interpretation. London: Routledge Shao Lei, Li Ang, Wu Guoxuan, et al. 2010. Evolution of sedimentary environment and provenance in Qiongdongnan basin in the northern South China Sea. Acta Petrolei Sinica (in Chinese), 31(4): 548-552

Shao Lei, Pang Xiong, Chen Changmin, et al. 2007. Terminal Oligocene sedimentary environments and abrupt provenance change event in the northern South China Sea. Geology in China (in Chinese), 34(6): 1022-1031

Shao Lei, Pang Xiong, Zhang Gongcheng, et al. 2009. Late Oligocene tectonic event in the northern South China Sea and its implications. Earth Science: Journal of China University of Geosciences (in Chinese), 34(5): 717-724

Shields G, Stille P. 2001. Diagenetic constraints on the use of cerium anomalies as palaeoseawater redox proxies: an isotopic and REE study of Cambrian phosphorites. Chemical Geology, 175(1): 29-48

Taylor S R, McLennan S M. 1985. The Continental Crust: Its Composition and Evolution. London: Blackwell Scientific Publications Villagómez D, Spikings R, Magna T, et al. 2011. Geochronology, geochemistry and tectonic evolution of the Western and Central cordilleras of Colombia. Lithos, 125(3-4): 875-896

Wan Shiming, Li Anchun, Clift P D, et al. 2007. Development of the East Asian monsoon: mineralogical and sedimentologic records in the northern South China Sea since 20 Ma. Palaeogeography, Palaeoclimatology, Palaeoecology, 254(3): 561-582

Wang Zhenfeng. 2012. Important deepwater hydrocarbon reservoirs: the central canyon system in the Qingdongnan basin. Acta Sedimentologica Sinica (in Chinese), 30(4): 646-653

Wang Xianjue, Chen Yuwei, Lei Jianquan, et al. 1982. REE geochemistry in sea-floor sediments in the continental shelf of East China Sea. Geochemica (in Chinese), (1): 56-65

Wang Pinxian, Jian Zhimin, Zhao Hongquan, et al. 2003. The deep-sea evidence of evolution in South China Sea and monsoon history. Chinese Science Bulletin (in Chinese), 48(21): 2228-2239

Wang Zhenfeng, Li Xushen, Sun Zhipeng, et al. 2011. Hydrocarbon accumulation conditions and exploration potential in the deepwater region, Qiongdongnan basin. China Offshore Oil and Gas (in Chinese), 23(1): 7-13

Wang Zisong, Liu Zhen, Huang Baojia, et al. 2014. Distribution and evaluation of Oligocene source rocks in the east of Central Depression Belt in deep-water area, Qiongdongnan Basin. Natural Gas Geoscience (in Chinese), 25(3): 360-371

Wen Qizhong, Diao Guiyi, Pan Jingyu, et al. 1996. Comparison of average chemical composition of loess in Loess Plateau with Clark values of crust. Acta Pedologica Sinica (in Chinese), 33(3): 225- 231

Wu Guoxuan, Tan Jungan, Mao Shaozhi. 2003. Deep-water Oligocene pollen record from South China Sea. Chinese Science Bulletin (in Chinese), 48(17): 1868-1871

Xie Jinlong, Yu Hezhong, Tang Liangmin, et al. 2010. The basement features and basin types of Cenozoic sediments in South China Sea. Marine Origin Petroleum Geology (in Chinese), 15(4): 35-47

Xu Fangjian, Li Anchun, Li Tiegang, et al. 2011. Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances. Journal of Rare Earths, 29(7): 702-709

Yang Shouye, Jung H S, Choi M S, et al. 2002. The rare earth element compositions of the Changjiang (Yangtze) and Huanghe (Yellow) river sediments. Earth and Planetary Science Letters, 201(2): 407-419

Zhang Gongcheng. 2010. Tectonic evolution of deepwater area of northern continental margin in South China Sea. Acta Petrolei Sinica (in Chinese), 31(4): 528-533

Zhang Gongcheng, Liu Zhen, Mi Lijun, et al. 2009. Sedimentary evolution of Paleogene series in deep water area of Zhujiangkou and Qiongdongnan basin. Acta Sedimentologica Sinica (in Chinese), 27(4): 632-641

Zhang Gongcheng, Zhang Yina, Shen Huailei, et al. 2014. An analysis of natural gas exploration potential in the Qiongdongnan Basin by use of the theory of joint control of source rock and geothermal heat. Natural Gas Industry (in Chinese), 34(1): 18-27

Zhao Yiyang, Wang Jintu, Qin Zhaoyang, et al. 1990. Rare earth elements in continental shelf sediments of the China seas. Acta Sedimentologica Sinica (in Chinese), 8(1): 37-43

Zhao Yiyang, Yan Mingcai. 1993. The element chemical abundance of sediments in China seas. Science in China: Series B (in Chinese), 23(10): 1084-1090

Zhao Min, Zhang Xiaobao, Ji Liming, et al. 2010. Characteristics of tectonic evolution in the Qiongdongnan basin and brief discussion about its controlling on reservoirs. Natural Gas Geoscience (in Chinese), 21(3): 494-502

Zhu Laimin, Gao Zhiyou, Yin Guan, et al. 2007. Cotent and spatial change of rare earth element and trace element of surficial sediment in the South China Sea. Acta Petrological Sinica (in Chinese), 23(11): 2963-2980

Zhu Weilin, Zhang Gongcheng, Gao Le. 2008. Geological characteristics and exploration objectives of hydrocarbons in the northern continental margin basin of South China Sea. Acta Petrolei Sinica (in Chinese), 29(1): 1-9

Zhu Weilin, Zhong Kai, Li Youchuan, et al. 2012. Characteristics of hydrocarbon accumulation and exploration potential of the northern South China Sea deepwater basins. Chinese Science Bulletin (in Chinese), 57(24): 3121-3129

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 1664
HTML全文浏览量: 59
PDF下载量: 2232
被引次数: 0

琼东南盆地陵南低凸起深水钻井岩心的稀土元素地球化学特征及其意义

doi: 10.1007/s13131-014-0578-3

计量

出版历程

Geochemical characteristics and their significances of rare-earth elements in deep-water well core at the Lingnan Low Uplift Area of the Qiongdongnan Basin

计量

出版历程

目录