| 四川广元长江沟大隆组的沉积特征及与烃源岩关系的研究 |
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| 引用本文： | 陈斌,蔡雄飞,冯庆来,顾松竹.四川广元长江沟大隆组的沉积特征及与烃源岩关系的研究[J].沉积与特提斯地质,2015,35(4):35-43. |
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| 作者姓名： | 陈斌 蔡雄飞 冯庆来 顾松竹 |
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| 作者单位： | 中国地质大学地球科学学院, 湖北 武汉 430074 |
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| 基金项目： | 国家自然科学基金(40839903)资助 |
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| 摘 要： | 四川广元长江沟上二叠统大隆组是以灰岩为主夹泥岩的沉积类型,生物群组合面貌十分丰富,沉积特征以还原、低能、低速、缺氧为特点。根据生物群组合面貌和沉积特征,其形成环境应为较深"浅水",而并非"半深海"。本区大隆组由于生物多样性和始终处于特殊的斜坡和缺氧环境,具有优质烃源岩特征,有机碳平均含量达5%,是四川今后寻找油气的有效标志层。
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| 关 键 词： | 生物多样性 沉积特征 烃源岩 大隆组 四川广元 |
| 收稿时间： | 2015/5/4 0:00:00 |
| 修稿时间： | 2015/5/18 0:00:00 |
The Dalong Formation section in Changjianggou,Guangyuan,Sichuan: Sedimentary characteristics and their bearings on the source rocks |
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| CHEN Bin,CAI Xiong-fei,FENG Qing-lai,GU Song-zhu.The Dalong Formation section in Changjianggou,Guangyuan,Sichuan: Sedimentary characteristics and their bearings on the source rocks[J].Sedimentary Geology and Tethyan Geology,2015,35(4):35-43. |
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| Authors: | CHEN Bin CAI Xiong-fei FENG Qing-lai GU Song-zhu |
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| Institution: | Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, Hubei, China |
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| Abstract: | The Dalong Formation section in Changjianggou,Guangyuan,Sichuan is characterized by limestones intercalated with mudstones,abundant biotic assemblages and deeper shallow-water environments indicated by reduction,low energy,low velocity and oxygen depletion. The bio-diversity and anoxic slope environments made the study area to be favourable for the formation of excellent source rocks,with the average organic carbon contents almost up to 5%,and thus may be potential marker horizons for future petroleum exploration in Sichuan. |
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| Keywords: | bio-diversity sedimentary characteristics source rock Dalong Formation Guangyuan in Sichuan |
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