物探与化探2024，Vol.48Issue(4)：971-978,8.DOI:10.11720/wtyht.2024.1502
蚌埠—淮北地区电性结构及地质意义
Electrical structure of the Bengbu-Huaibei area and its geological implications
摘要
Abstract
This study conducted magnetotelluric profiling in the Bengbu-Huaibei area of Anhui Province.Combined with gravity and magnetic anomalies,it obtained the deep electrical structure,the distribution of primary strata,and the properties of faults in the area,particularly the morphology of the Xuzhou-Suzhouarcuate nappe structure and the development of deep coal-measure strata.The results indicate that:(1)The Upper Paleozoic strataare primarily distributed under the high-resistivity nappe on the surface of the Xuzhou-Suzhouarcuate nappe structure.Theymanifest low-resistivity and low-densityphysical properties and high continuity,suggesting high ex-ploration potential for coal beneath the nappe structure;(2)On the profile,early-stage faulting was dominated by reverse faults,resul-ting in local Lower Paleozoic and Proterozoicstrata overlying the Upper Paleozoic strata.In the later stage,normal faults predominated,controlling the Cenozoic deposition;(3)The Xuzhou-Suzhouarcuate nappe structure exhibits a'high-low'double-layer electrical struc-ture at burial depths shallower than 4 km,withthe dominant thrust fault plane composed of F5 and F6 faults.The leading edge of the high-resistivity nappe on the surface extends northwestward to Xiaoxian County and southward to northern Guzhen County,experiencing significant denudation in the Zhahe area.The above results provide critical geophysical information for the basic geological research and mineral exploration in the study area.关键词
大地电磁/电性结构/蚌埠隆起/淮北断褶带/徐宿弧形推覆构造/上古生界Key words
magnetotellurics/electrical structure/Bengbu uplift/Huaibei faultfold belt/Xuzhou-Suzhouarcuate nappe structure/Upper Paleozoic分类
天文与地球科学引用本文复制引用
朱将波,汪启年,刘玉泉,官大维,李涛,尤淼,张健..蚌埠—淮北地区电性结构及地质意义[J].物探与化探,2024,48(4):971-978,8.基金项目
安徽省重点研发计划项目"基于人工源电磁法的页岩气绿色勘查新技术研究"(2022107020010) （2022107020010）
国家重点研发计划项目"深部资源勘查数据处理、解释软件平台开发及综合示范"(2018YFC060360600) （2018YFC060360600）
安徽省公益性地质调查项目"皖北地区物探编图及综合解释"(2012-g-2) （2012-g-2）
