岩性油气藏 ›› 2009, Vol. 21 ›› Issue (2): 35–41.doi: 10.3969/j.issn.1673-8926.2009.02.007

• 油气地质 • 上一篇    下一篇

准噶尔盆地南缘水西沟群物源分析

万延周1,周立发1,白斌1,2,谢其锋1,3,蒲磊1   

  1. 1.西北大学大陆动力学国家重点实验室; 2.中国石油勘探开发研究院; 3.中国石化河南油田分公司勘探开发研究院
  • 出版日期:2009-06-16 发布日期:2009-06-16
  • 第一作者:万延周,1983 年生,男,西北大学在读硕士研究生,主要从事含油气盆地分析与评价。地址:(710069)陕西省西安市西北大学地质 系。E-mail:wswyzh@163.com

Provenance analysis of Shuixigou Group in southern margin of Junggar Basin

WAN Yanzhou1,ZHOU Lifa1,BAI Bin 1,2,XIE Qifeng 1,3,PU Lei1   

  1. 1. State Key Laboratory of Continental Dynamics, Northwest University, Xi’an 710069, China; 2. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China; 3. Research Institute of Petroleum Exploration and Development, Henan Oilfield Company, Sinopec, Nanyang 473132, China
  • Online:2009-06-16 Published:2009-06-16

摘要:

通过砾岩成分、古流向、碎屑组成、重矿物、主量元素的系统分析方法,对准噶尔盆地南缘水西沟群进行物源分析。砾岩成分组合特征显示八道湾组和西山窑组沉积期,伊林哈比尔尕山、北天山和中天山北缘断裂一线为物源区。古流分析数据显示八道湾组和西山窑组古流以北东、西向为主,表明伊林哈比尔尕山应为其主物源区;三工河组古流向主要为南南西和南东向,表明当时博格达山和伊林哈比尔尕山并非物源区。盆地南缘西段和东段为基性岩浆岩的重矿物组合显示物源可能来自北天山。而中段存在中酸性岩浆岩—基性岩物源显示博格达山为物源区。

关键词: 湖相碳酸盐岩;混积岩;沙一段;板桥&mdash, 北大港地区

Abstract:

Based on systematic analysis of conglomerate constituent, paleocurrent direction, detrital composition, heavy mineral and major element, the provenance characteristics of Shuixigou Group in southern margin of Junggar Basin are studied. The analysis of conglomerate component of Shuixigou Group shows that Yilinhabierga Mountain, northern Tianshan Mountains and northern margin fault of central Tianshan Mountains were the source areas in the sedimentary period of Badaowan and Xishanyao Formation. The paleocurrent analytical data of Shuixigou Group show that paleocurrent directions ofBadaowan Formation and Xishanyao Formation are mainly northeast and west, soYilinhabierga Mountain is the primary source area. The paleocurrent directions of Sangonghe Formation are mainly SSW and SE, which indicates that Bogda Mountain and Yilinhabierga Mountain are not the primary source area in that period. Shuixigou Group in the western and eastern segment of the southern margin of Junggar Basin has heavy mineral assemblage of basic magmatic rocks, which shows that the material supply might be from the northern Tianshan Mountains. The middle segment of the southern margin of Junggar Basin has genetic features of medium-acidic magmatite and basic magmatic rocks, which shows that the source area is in Bogda Mountain.

Key words: lacustrine carbonate rocks, mixosedimentite, first member of Shahejie Formation, Banqiao-Beidagang area

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