Geochemical and geological characteristics of the Lower Cambrian shales in the middle–upper Yangtze area of South China and their implication for the shale gas exploration
| Autor: | Jun Liu, Xi Zheng, Jian-Fei Yan, Haiquan Zhang, Shaonan Zhang, Wei Liu, Hong-Hai Bai, Jian-Wei Kang, Yuan-Yuan Sun, Yu-Peng Men, Qian Yu |
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| Rok vydání: | 2016 |
| Předmět: |
Total organic carbon
South china Shale gas 020209 energy Stratigraphy Geochemistry Geology 02 engineering and technology 010502 geochemistry & geophysics Oceanography 01 natural sciences Anoxic waters Paleontology Geophysics Organic geochemistry 0202 electrical engineering electronic engineering information engineering Economic Geology 0105 earth and related environmental sciences |
| Zdroj: | Marine and Petroleum Geology. 70:1-13 |
| ISSN: | 0264-8172 |
| DOI: | 10.1016/j.marpetgeo.2015.11.010 |
| Popis: | During the Early Cambrian, the middle–upper Yangtze area of South China evolved to an open shelf with anoxic bottom waters prevailing in most places. Accumulated black shales in this area, named Niutitang Formation (Qiongzhusi Formation in some places), thus become the prospective resources for shale gas exploration and development. Based on compiled petrological and organic geochemistry data, and other information obtained by relevant laboratory tests and field investigation, we documented regional distributional patterns of Lower Cambrian organic-rich shales in the middle–upper Yangtze area according to their lateral extent, thickness, total organic carbon, thermal maturity and burial depth. This study also features the general reservoir properties of dark shales in this area. Together these results highlight several most favorable areas including Youyang-Xiushan-Huayuan, Suiyang-Daozhen-Dejiang, Shiqian-Sinan-Yinjiang, Jiangkou-Tongren-Songtao and Huangping-Shibing for shale gas exploration. |
| Databáze: | OpenAIRE |
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