[1]杨伟利,王起琮,刘佳玮,等.鄂尔多斯盆地奥陶系马家沟组标准化层序地层学研究[J].西安科技大学学报,2017,(02):234-241.[doi:10.13800/j.cnki.xakjdxxb.2017.0214]
 YANG wei-li,WANG qi-cong,LIU jia-wei,et al.Standardization of sequence stratigraphy in Ordovician Majiagou formation,Ordos Basin[J].Journal of Xi'an University of Science and Technology,2017,(02):234-241.[doi:10.13800/j.cnki.xakjdxxb.2017.0214]
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鄂尔多斯盆地奥陶系马家沟组标准化层序地层学研究(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2017年02期
页码:
234-241
栏目:
出版日期:
2017-03-30

文章信息/Info

Title:
Standardization of sequence stratigraphy in Ordovician Majiagou formation,Ordos Basin
文章编号:
1672-9315(2017)02-0234-08
作者:
杨伟利1王起琮2刘佳玮2石 堃2魏 巍2
1.中国石化石油勘探开发研究院,北京 100083; 2.西安石油大学 地球科学与工程学院,陕西 西安 710065
Author(s):
YANG wei-li1WANG qi-cong2LIU jia-wei2SHI kun2WEI wei2
1.Sinopec Petroleum Exploration and Production Research Institute,Beijing 100083,China; 2.School of Earch Sciences and Engineering,Xi'an Shiyou University,Xi'an 710065,China
关键词:
层序地层标准化 强制海退体系域 奥陶系马家沟组 鄂尔多斯盆地
Keywords:
Key words:standardized sequence stratigraphic regressive system tract Ordovician Majiagou formation Ordos Basin
分类号:
P 618.13
DOI:
10.13800/j.cnki.xakjdxxb.2017.0214
文献标志码:
A
摘要:
应用标准化层序地层理论开展鄂尔多斯盆地奥陶系马家沟组层序地层研究。主要采用了露头观察和岩心描述、岩石薄片鉴定、地球化学分析及测井岩性解释方法,确定地层岩石类型、岩相组合特征、层序地层界面特征及其位置,结合绝对地质年龄及天文周期时限作为层序划分主要依据。文中将马家沟组划分为平均时限为3.65 Ma的3个海平面变化层序,根据岩相组合及地层界面将各层序划分为低位、海侵、高位及强制海退体系域,层序界面位于强制海退体系域顶界,形成于最低海平面开始上升时期,以石盐岩到硬石膏岩或硬石膏岩到准同生泥晶白云岩的岩性转换面为特征。研究结果表明,随着海平面升降运动,碳酸盐岩台地上的岩性组合及变化具有明显的规律性,突显了应用标准化层序地层理论建立的层序划分方案的合理性和实用性。
Abstract:
Abstract:Thestandardized sequence stratigraphy theory is applied to investigate Ordovician Majiagou formation.According to kinds of data,such as outcrop,core and logs,the lithologic characteristics and litho facies assemblage characteristics combine withabsolutegeological ages and astronomical period,rejiggering the division plan about standardization of sequence stratigraphy in Ordovician Majiagou formation.The Majiagou formation can be divided into three sea-level change sequence,and according to the method of system tract four-division,the inside of each sequence is classified as Lowstand System Tract(LST),Transgressive System Tract(TST),Highstand System Tract(HST)and Regressive System Tract(RST).The sequence boundary is located on the top boundary of RST,and formed when sea-level rise from the lowest level.The lithology conversion surface is from halilith to anhydrite,or from anhydrite to penecon temporaneous micritic dolomitein.Research results show that with sea level rise and drop,the rock compositions on the carbonate rock tableland and their change are of regularity.The Standardized Sequence Stratigraphy Theory provides these kinds of formations with the most reasonable and suitable division method,and it also has practical value.

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备注/Memo

备注/Memo:
基金项目:国家科技重大专项(2016ZX05005-002-06,2016ZX05005-002-05HZ) 通讯作者: 杨伟利(1973-),男,河北赵县人,博士,高级工程师,E-mail:yangwl.syky@sinopec.com
更新日期/Last Update: 1900-01-01