四川盆地及周缘志留系层序地层与沉积相特征  被引量:1

The sequence stratigraphy and sedimentary facies characteristics of Silurian in Sichuan basin and the periphery

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作  者:谢刚平[1] 王海军[1] 孟宪武[1] 宋晓波[1] 

机构地区:[1]中国石化西南油气分公司勘探开发研究院,四川成都610000

出  处:《大众科技》2015年第2期55-58,共4页Popular Science & Technology

基  金:国家重大专项(编号:2011ZX-05002-004);中石化科技开发部2011~2012年度项目<四川盆地及周缘下组合成藏条件与区带评价>联合资助

摘  要:通过对四川盆地及周缘钻测井资料、野外剖面等观察分析,把志留系划分为两个三级层序,奥陶系五峰组-志留系龙马溪组-石牛栏组组成下部三级层序、志留系韩家店组组成上部三级层序;明确了陆棚沉积体系是志留系主要沉积模式,局部发育台地及三角洲沉积,其中志龙马溪组以深水陆棚沉积为主,发育富有机质笔石页岩、石牛栏组主要为浅水碎屑陆棚、韩家店组主要发育深-浅水陆棚,岩性为紫红色泥页岩,局部为条带状砂岩。Based on the detailed analysis of well drilling , logging, and outcrop data, divide the Silurian into two third sequence, Ordovician Wufeng-Silurian Longmaxi-Shiniulan formation composed the lower third sequence, Silurian Hanjiadian formation formed the upper third sequence. Indicated that the shelf faces deposit system was the main sedimentary model in Silurian, platform and delta deposit developed in local areas. The Longmaxi formation sedimentary environment mainly is deep shelf, the lithology characterized by graptolite shale, which with rich organic matter, the Shiniulan formation mainly shallow detrital shelf deposited, Hanjiadian formation developed deep-shallow shelf sedimentary, the lithology was purplish red mud-shale, band sandstone developed in local areas.

关 键 词:层序地层 沉积相 志留系 四川盆地 

分 类 号:TE1[石油与天然气工程—油气勘探]

 

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