柴达木盆地成因类型探讨
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摘要
柴达木盆地是一个多成因的叠合含油气盆地,不同学者对其在不同演化阶段的成因特征和形成机制认识有较大差异;在分析、归纳、总结了4种有代表性的基本观点的基础上,结合区域构造演化、沉积发育、构造发育史恢复、地震反射特征,提出柴达木盆地形成与演化经历了早中侏罗世断陷盆地、晚侏罗世—白垩纪挤压挠曲盆地、古近纪挤压坳陷盆地和新近纪—第四纪前陆盆地共4个阶段的新观点,统一了对柴达木盆地成因类型及其形成机制的认识,对深化盆地地质认识、正确评估盆地资源有重要意义。
The Qaidam Basin is a petroliferous basin with multiple genetic types.There are many different view points about its genetic characteristics and mechanisms during different evolution stages.Based on 4 main view points,combined with regional tectonic evolution,sedimentary generation,tectonic history restoration and seismic reflection characteristics,it is concluded in this paper that,the Qaidam Basin has experienced 4 stages: rift-subsidence basin from early to middle Jurassic,compression-inflection basin from late Jurassic to Cretaceous,compression-depression basin during early Tertiary and foreland basin from late Tertiary to Quaternary.This new opinion unifies knowledge about basin genetic types and mechanisms of the Qaidam Basin.It is very important for further research of basin geology and resource evaluation.
The Qaidam Basin is a petroliferous basin with multiple genetic types.There are many different view points about its genetic characteristics and mechanisms during different evolution stages.Based on 4 main view points,combined with regional tectonic evolution,sedimentary generation,tectonic history restoration and seismic reflection characteristics,it is concluded in this paper that,the Qaidam Basin has experienced 4 stages: rift-subsidence basin from early to middle Jurassic,compression-inflection basin from late Jurassic to Cretaceous,compression-depression basin during early Tertiary and foreland basin from late Tertiary to Quaternary.This new opinion unifies knowledge about basin genetic types and mechanisms of the Qaidam Basin.It is very important for further research of basin geology and resource evaluation.
引文
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2王鸿祯,刘本培,李思田.中国及邻区大地构造划分和构造发展阶段[A].见:王鸿祯编.中国及邻区构造古地理和生物古地理[G].武汉:中国地质大学出版社,1990.3~34
3夏文臣,袁小平.柴达木侏罗系的构造层序及前陆盆地演化[J].石油与天然气地质,1998,19(3):173~180
4金之钧,李京昌.柴达木盆地新生代波动过程及与油气关系[J].地质学报,2006,80(3):359~365
5《中国石油地质志》编辑委员会.中国石油地质志(青海油田卷)[M].北京:石油工业出版社,1990.12~66
6杨永泰,张宝民.柴达木盆地北缘侏罗系展布规律新认识[J].地层学杂志,2001,25(2):154~159
7杨永泰,刘桂侠,贾兴友等.柴达木盆地北缘上三叠统—侏罗系层序特征与含油气系统划分[J].地球学报,2002,28(1):29~33
8刘训,高锐.柴达木—祁连—北山地区地壳结构和地体组合[J].Acta Seismologica Sinica,1998,72(3):243~255
9郭绪杰.柴达木盆地鸭湖地区生物气形成条件分析[J].石油实验地质,2006,28(6):535~538
10甘贵元.柴达木盆地德令哈断陷石油地质特征及勘探远景[J].石油实验地质,2006,26(5):499~502
11郑孟林,李明杰,曹春潮等.柴达木北缘西段侏罗纪盆地构造特征及其演化[J].石油实验地质,2004,24(4):338~341
12吴汉宁,张小会.用古地磁资料探讨柴达木构造演化[J].中国科学(D辑),1997,27(1):9~14
13翟光明,徐凤银.重新认识柴达木盆地力争油气勘探获得新突破[J].石油学报,1997,18(2):1~7
14彭作林.中国主要含油气盆地运动学过程与油气[J].沉积学报,1995,13(2):150~159
15贾庆军.柴达木盆地北部碰撞构造与盆地改造变形[J].石油实验地质,2002,27(4):33~37
16狄恒恕.柴达木盆地形成机理及其对油气的控制[A].见:朱夏编.中国中新生代沉积盆地[G].北京:石油工业出版社,1990.186~195
17和钟铧,刘招君.柴达木北缘中生代盆地的成因类型及构造沉积演化[J].吉林大学学报,2002,32(4):333~339
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