Crustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications

A Magnetotelluric profile stretching northward from the Wulungu Depression (on the northern margin of the Junggar Basin) to the Dulate arc (crossing the Zhaheba–Aermantai ophiolite belt) was carried out in an attempt to probe the crustal structure and properties of the East Junggar, NW China. Along...

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Autores principales: Pingchuan Zhang, Changqing Yu, Xiangzhi Zeng
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:47b01134c0a547cf84ae4dc3703ad87e2021-11-11T15:05:43ZCrustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications10.3390/app1121100132076-3417https://doaj.org/article/47b01134c0a547cf84ae4dc3703ad87e2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10013https://doaj.org/toc/2076-3417A Magnetotelluric profile stretching northward from the Wulungu Depression (on the northern margin of the Junggar Basin) to the Dulate arc (crossing the Zhaheba–Aermantai ophiolite belt) was carried out in an attempt to probe the crustal structure and properties of the East Junggar, NW China. Along the profile, the inversion model was used to determine the electrical structure of the crust and uppermost mantle. The results revealed that the crust of the eastern Junggar Basin is composed of the shallow low resistivity layer and underlying high resistivity bodies. There is a crustal detachment in the basement: the upper layer is a Hercynian folded basement and the lower is a Precambrian basement. The Zhaheba complex is characterized by relatively high resistivity, with a thickness of ~5 km, the bottom controlled by the Zhaheba–Aermantai fault. The crust of the Yemaquan arc is composed of the residual continental crust, characterized by stable resistance. The exposed intrusive rocks are characterized by irregular resistors. The crust of the Dulate arc is characterized by relatively low resistivity. The shallow low resistivity layers represent the Zhaheba depression composed of the Devonian-Permian volcanic and sedimentary rocks. The crustal conductive anomalies are related to the magmatism and mechanism of metal deposits in the post-collision period.Pingchuan ZhangChangqing YuXiangzhi ZengMDPI AGarticleZhaheba complexmineralizationelectrical structureEast JunggarTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10013, p 10013 (2021)
institution DOAJ
collection DOAJ
language EN
topic Zhaheba complex
mineralization
electrical structure
East Junggar
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
spellingShingle Zhaheba complex
mineralization
electrical structure
East Junggar
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
Pingchuan Zhang
Changqing Yu
Xiangzhi Zeng
Crustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications
description A Magnetotelluric profile stretching northward from the Wulungu Depression (on the northern margin of the Junggar Basin) to the Dulate arc (crossing the Zhaheba–Aermantai ophiolite belt) was carried out in an attempt to probe the crustal structure and properties of the East Junggar, NW China. Along the profile, the inversion model was used to determine the electrical structure of the crust and uppermost mantle. The results revealed that the crust of the eastern Junggar Basin is composed of the shallow low resistivity layer and underlying high resistivity bodies. There is a crustal detachment in the basement: the upper layer is a Hercynian folded basement and the lower is a Precambrian basement. The Zhaheba complex is characterized by relatively high resistivity, with a thickness of ~5 km, the bottom controlled by the Zhaheba–Aermantai fault. The crust of the Yemaquan arc is composed of the residual continental crust, characterized by stable resistance. The exposed intrusive rocks are characterized by irregular resistors. The crust of the Dulate arc is characterized by relatively low resistivity. The shallow low resistivity layers represent the Zhaheba depression composed of the Devonian-Permian volcanic and sedimentary rocks. The crustal conductive anomalies are related to the magmatism and mechanism of metal deposits in the post-collision period.
format article
author Pingchuan Zhang
Changqing Yu
Xiangzhi Zeng
author_facet Pingchuan Zhang
Changqing Yu
Xiangzhi Zeng
author_sort Pingchuan Zhang
title Crustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications
title_short Crustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications
title_full Crustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications
title_fullStr Crustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications
title_full_unstemmed Crustal Electrical Structure of the Zhaheba Complex Imaged by Magnetotelluric Data and Its Tectonic Implications
title_sort crustal electrical structure of the zhaheba complex imaged by magnetotelluric data and its tectonic implications
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/47b01134c0a547cf84ae4dc3703ad87e
work_keys_str_mv AT pingchuanzhang crustalelectricalstructureofthezhahebacompleximagedbymagnetotelluricdataanditstectonicimplications
AT changqingyu crustalelectricalstructureofthezhahebacompleximagedbymagnetotelluricdataanditstectonicimplications
AT xiangzhizeng crustalelectricalstructureofthezhahebacompleximagedbymagnetotelluricdataanditstectonicimplications
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