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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第32卷

期数:

2010年第02期

页码:

149-154

栏目:

基础地质与矿产地质

出版日期:

2010-06-20

文章信息/Info

Title:

Study on Sedimentary Facies and Environment of Middle Jurassic in Hongliugou of Yabulai Basin, Inner Mongolia

文章编号:

1672-6561(2010)02-0149-06

作者:

钟福平¹; 2; 钟建华¹; 3; 由伟丰⁴; 王勇¹; 张磊³; 边强⁵; 艾合买提江·阿不都热和曼³; 高玉飞³; 王金华³

(1.中国科学院 广州地球化学研究所,广东 广州 510640; 2.中国科学院 研究生院,北京 100049; 3.中国石油大学 地球资源与信息学院,山东 东营 257061; 4.中国石油化工股份有限公司 石油勘探开发研究院,北京 100083; 5.中国人民解放军空军95338部队 1大队,湖南 衡阳 421200)

Author(s):

ZHONG Fu-ping¹; 2;  ZHONG Jian-hua¹; 3;  YOU Wei-feng⁴;  WANG Yong¹;  ZHANG Lei³;  BIAN Qiang⁵;  Ahmatjan ABDURAHMAN³;  GAO Yu-fei³;  WANG Jin-hua³

(1.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China; 2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 3.School of Geo-resources andInformation, China University of Petroleum, Dongying 257061, Shandong, China; 4.Research Institute of Oil Exploration and Development, China Petroleum and Chemical Corporation, Beijing 100083, China; 5.Team 1,Troop 95338, the Air Force of the Chinese People's Liberation Army, Hengyang 421200, Hunan, China)

关键词:

中侏罗统; 沉积相; 沉积环境; 青土井组; 雅布赖盆地; 红柳沟

Keywords:

Middle Jurassic;  sedimentary facies;  sedimentary environment;  Qingtujing Formation;  Yabulai Basin;  Hongliugou

分类号:

P586;P588.2

DOI:

-

文献标志码:

A

摘要:

野外考察发现,雅布赖盆地红柳沟发育一套较完整的中侏罗统扇三角洲沉积地层。其中沉积亚相有扇三角洲平原、扇三角洲前缘及前扇三角洲亚相;沉积微相包括辫状河道、天然堤、决口、沼泽、水下分流河道、水下分流河道间、河口坝、席状砂等沉积微相。从沉积构造特征分析可以看出,河道沉积发育于水动力条件较强的沉积环境,扇三角洲前缘河口坝沉积发育于强与弱水动力条件交替出现的沉积环境,而前扇三角洲则在比较稳定的水动力条件下沉积。对野外6个泥岩样品的微量元素化验结果用蜘蛛图解分析处理,得到样品所含微量元素V、Sr、Rb、B相对富集,而Zr、Cr、Ni相对亏损。通过对该地区样品w(Fe²⁺)/w(Fe³⁺)及气候指数计算表明,当时为弱氧化、半干旱的沉积环境。

Abstract:

Based on the field investigation in Hongliugou of Yabulai Basin, the results indicate that the main sedimentary facies is Jurassic fan delta, which can be divided into three subfacies including fan delta plain, fan delta front and pre-fan delta and six microfacies including braided channel, natural levee, crevasse, marsh, underwater distributary channel, underwater distributary interchannel, mouth bar, sheet sand, and so on. According to the field characteristics of sedimentary structures, the channel deposits developed in the condition of strong hydrodynamic, mouth bar deposits of fan delta front developed in the condition of alternating dynamic of strong and weak, and the pre-fan delta developed in the condition of relatively stable hydrodynamic. According to the analysis of trace elements in six samples of mudstone with spider diagrams, the results show that the contents of V, Sr, Rb, B are relatively high, but Zr, Cr, Ni are relatively low. Calculations of climate index and the ratio of mass factions of Fe²⁺ and Fe³⁺ show that the sedimentary environment was weak oxidation and semi-arid in Middle Jurassic.

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备注/Memo

备注/Memo:

收稿日期:2009-07-23
基金项目: 国家重点基础研究发展计划项目(2006CB202406); 中国石油化工股份有限公司项目(07370502000130)
作者简介: 钟福平(1978-),男,江西分宜人,理学博士研究生,从事油气成藏研究。E-mail:zhongfp-2022@163.com

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更新日期/Last Update: 2010-06-20