新疆石油地质 ›› 2009, Vol. 30 ›› Issue (1): 133-135.

• 讨论与争鸣 • 上一篇    下一篇

准噶尔盆地永进地区侏罗系红层成因探讨

贺振建   

  1. 中国石化胜利油田有限责任公司地质科学研究院,山东东营257015
  • 收稿日期:2008-07-21 出版日期:2009-02-01 发布日期:2020-08-21
  • 作者简介:贺振建(1969-),男,河南滑县人,高级工程师,地层古生物,(Tel)0546-8715359(E-mail)dzydchzj@solf.com.
  • 基金资助:
    中国石化勘探西北分公司科研项目,永进地区地质工艺研究(XBSY06-1)资助

Discussion on Genesis of Red Beds of Jurassic in Yongjin Area in Junggar Basin

HE Zhen-jian   

  1. Research Institute of Geosciences, Shengli Oilfield Company Ltd., Sinopec, Donging, Shandong 257015, China
  • Received:2008-07-21 Online:2009-02-01 Published:2020-08-21

摘要: 新疆准噶尔盆地永进地区侏罗系顶部发育一套以紫红色为主的砂泥岩沉积,根据岩心、粘土矿物组成、泥岩氧化物比值、化学蚀变指数等分析认为,红层是在半干旱半潮湿气候条件下,物源运移和沉积的同时被氧化所致的滨浅湖或辫状河三角洲前缘相正常沉积的岩石,遭受化学风化及风化淋滤作用较弱,不具备风化壳的特征。分析认为红层层位应为头屯河组。车莫古隆起的发育在中侏罗世后期表现为短期下沉、后又抬升的特点。

关键词: 准噶尔盆地, 永进地区, 侏罗系, 红层, 成因

Abstract: The red sandy mudstone deposit (red beds) occurs in the top of Jurassic in Yongjin area of Junggar basin. Based on the core observation, change of clay mineral composition, oxide ratio and chemical alteration index analysis, the red beds are normal sedimentary rocks formed in the shore-shallow lake or braided delta front environment, followed by being oxidized while migration and deposition under the semiarid-subhumid climate. The result shows that the red beds are in weak chemical weathering and leaching process without weathering crust. It is suggested that the red beds should belong to Toutunhe formation of Middle Jurassic. The Che-Mo palaeohigh developed in late of Middle Jurassic is of short-term subsidence and then uplift features.

Key words: Junggar basin, Yongjin area, Jurassic, red bed, genesis

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