三门峡盆地重力异常特征与构造格局
DOI:
作者:
作者单位:

1.中国石油大学(北京)地球科学学院;2.中石化华北油气分公司勘探开发研究院

作者简介:

通讯作者:

中图分类号:

P548

基金项目:

中国石化科技部项目群课题4(P20062-4),华北油气分公司科技研项目(34550008-20-ZC0609-0019)


Gravity anomaly characteristics and tectonic framework in Sanmenxia Basin
Author:
Affiliation:

1.College of Geosciences,China University of petroleum(Beijing);2.Exploration and Development Research Institute of Sinopec North China Oil Gas Company

Fund Project:

Sinopec Ministry of Science and Technology Project Group Project 4 (P20062-4), Science and Technology Research Project of North China Oil and Gas Branch (34550008-20-ZC0609-0019)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    三门峡盆地位于汾渭地堑系东南端,秦岭纬向构造带和新华夏构造的交汇部位。研究其构造格局对盆地油气勘探具有重要意义。本文综合利用布格重力资料和野外观测资料,刻画盆地断裂特征并划分了构造单元。研究结果表明,三门峡盆地主要发育近EW向、NE向和NW向三组断裂系,包括4条边界断裂和13条盆地内次级断裂,且边界断裂多以断裂带形式呈现。盆地断裂多形成于前新生代,至第四纪趋于稳定,具有延伸长、切割深的特点。盆地西部布格重力异常值相对较高,剩余重力场盆内自北向南呈近EW向低-高-低的条带分布,且存在多个异常值不同的区域,表明新生代沉积地层较厚,并受断裂控制出现了沉降差异。受中条山南断裂、文底-宫前断裂、灵宝-三门峡断裂和三门峡-硖石断裂等断裂控制,三门峡盆地可划分为3个二级构造单元和9个三级构造单元,盆地自北向南依次为北部坳陷带、中部低隆起和南部坳陷带。整体表现为南北分带、凹隆相间的构造格局。

    Abstract:

    Sanmenxia Basin is located at the southeast of Fen-Wei Graben, between the Qinling tectonic belt and the intersection of the Neo-Cathaysian structural system. It is of great significance to investigate its tectonic framework for the oil and gas exploration in the basin. This paper characterizes the basin faults and divides its tectonic units using Bouguer gravity data and field observations. The results demonstrate that there are mainly three groups of faults in Sanmenxia Basin(near EW-trending, NE-trending and NW-trending), including 4 boundary faults, mainly in the form of fault belts, and 13 sub-basin faults and boundary faults. Most of these basin faults were formed in Pre-Cenozoic, and tended to be stable in Quaternary, with the characteristics of long extension and deep cutting. The Bouguer gravity anomaly in the western part of the basin is relatively high, the residual gravity field in the basin is distributed in a near-EW low-high-low strip trend from north to south, and there are multiple areas with different outliers. This phenomenon indicates that the Cenozoic sedimentary stratum is thick and there is a subsidence difference caused by the faults. According to the influences of the basement faults such as Zhongtiao Shannan Fault, Wendi-Gongqian Fault, Lingbao-Sanmenxia Fault and Sanmenxia-Kishi fault, Sanmenxia Basin can be divided into 3 secondary tectonic units and 9 tertiary tectonic units. From north to south, there lies the northern depression belt, the central low-uplift and the southern depression belt, showing an overall tectonic framework: belts in the north and south, and depressions alternating with uplifts.

    参考文献
    相似文献
    引证文献
引用本文

曲志成,马超,田刚,等. 三门峡盆地重力异常特征与构造格局[J]. 科学技术与工程, , ():

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-11-13
  • 最后修改日期:2022-03-19
  • 录用日期:2022-04-27
  • 在线发布日期:
  • 出版日期:
×
关于近期《科学技术与工程》编辑部居家办公的说明
亟待确认的版面费信息