卢腾辉,张喜,张廷山,程青松,何方雨,曾建理,Mihai Emilian Popa,黄浩,李世鑫,马知恒,罗锦宇

• 1:西南石油大学地球科学与技术学院
• 2:西南石油大学天然气地质四川省重点实验室
• 3:中国石油浙江油田公司
• 4:布加勒斯特大学地质与地球物理系

摘要(Abstract)：

中国西南地区四川盆地上三叠统须家河组赋存有丰富的植物化石、油气及煤岩矿产资源,其发育显著受控于泸州古隆起。但在古隆起核部,须家河期早期(须一期至须二期)是否存在沉积记录仍然饱受争议,相关地层划分、对比方案的不统一也影响了本区的油气勘探和开发。针对上述问题,本文对四川盆地东南部须家河组开展了综合研究,获得了一些新认识:基于旋回地层学分析,古隆起区须家河期的沉积时间约为5.9Myr,与须家河期沉积记录相对完整的盆地东北部宣汉七里峡地区基本一致;基于沉积噪音模型和假设,识别出3个显著的高信噪比区间,分别对应须一、须三和须五段附近,指示古隆起地区须家河期早期存在沉积记录;地球化学和古生物学证据表明须家河组下部存在一段海相地层,与盆地西部须一段可以对比,指示古隆起地区须一期存在沉积记录。在此基础上,本文重新厘定了四川盆地东南部的地层划分、对比方案,为盆地东南部上三叠统油气勘探、开发提供了理论支持。

关键词(KeyWords)： 泸州古隆起;晚三叠世;须家河组;旋回地层;沉积噪音模型;孢粉学

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(41972120、42172129);; 中国博士后科学基金(2021M702720)共同资助

作者(Author): 卢腾辉,张喜,张廷山,程青松,何方雨,曾建理,Mihai Emilian Popa,黄浩,李世鑫,马知恒,罗锦宇

DOI: 10.19839/j.cnki.dcxzz.2023.0012

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