杨海军,王建坡,李猛,沈建伟,张丽娟,黄智斌,靳永斌

• 1:中国石油天然气股份有限公司塔里木油田分公司勘探开发研究院
• 2:中国科学院边缘海地质重点实验室中国科学院南海海洋研究所

摘要(Abstract)：

塔西南地区南天山山前和昆仑山山前广泛出露的古近系卡拉塔尔组为新一轮海进的标志。较干旱炎热气候背景下的碳酸盐岩沉积与古河流携带陆源碎屑的注入共同作用的结果形成了包括介壳灰岩、生屑灰岩、鲕粒灰岩等碳酸盐岩,钙质—粉砂质泥岩、钙质砂岩和石膏岩在内各种岩石类型,并在不同沉积环境形成了不同的岩石组合,构建了从陆相冲积扇到海相浅海陆棚的一个完整的沉积体系。该区可划分为冲积扇至浅海陆棚环境的碎屑岩和缓坡至陆棚的碳酸盐岩两种不同的沉积区域,它们之间的相互作用使得卡拉塔尔组形成了复杂的混合沉积现象,其中以间断混合和相混合为主,同时见有源区混合和原地混合类型。控制这些混合过程的主要因素为构造作用、海平面变化和风暴等突发性事件,气候条件和物源区亦可视为频繁影响因素,水动力因素的控制作用则影响较弱。

关键词(KeyWords)： 岩石地层;岩相特征;沉积环境;混合沉积作用;卡拉塔尔组;古近系;塔里木盆地;新疆

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(No.40872078);; 中国石油天然气股份有限公司塔里木油田分公司基础研究项目(No.041009080051)资助

作者(Author): 杨海军,王建坡,李猛,沈建伟,张丽娟,黄智斌,靳永斌

DOI: 10.19839/j.cnki.dcxzz.2011.02.003

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