气候变化领域集成服务门户(CCPortal): On the Use of Aeromagnetism for Geological Interpretation: 2. A Case Study on Structural and Lithological Features in the Northern Vosges

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DOI	10.1029/2019JB017688
	On the Use of Aeromagnetism for Geological Interpretation: 2. A Case Study on Structural and Lithological Features in the Northern Vosges
	Bertrand L.; Gavazzi B.; Mercier de Lépinay J.; Diraison M.; Géraud Y.; Munschy M.
发表日期	2020
ISSN	21699313
卷号	125 期号:5
英文摘要	In many grabens of the West European Rift System, several drilling projects are targeting fluid conductive faults to produce electricity with geothermal energy. In order to reach the adequate temperatures, the targeted faults are located in the basement rocks or at the basement/cover interface. Unfortunately, the basement rock facies and structural data useful for reservoir modeling are often poorly constrained because of the lack of boreholes deeper than 2,000 m and seismic information on the deep subsurface. With the aim to outline the basement structure in the Upper Rhine Graben, two aeromagnetic surveys were conducted where the basement outcrops in the Northern Vosges, with different flight parameters and types of magnetometers. An interpolator using equivalent sources for gridding these two surveys is described by Gavazzi et al. (2020). Here, we describe the geological interpretation of these surveys. We demonstrate the consistency between the total magnetic field intensity and the outcropping lithological units organized in ENE-WSW subvertical bands. In detail, three main blocks were delineated, separated by N-S faults linked to the graben formation and ENE-WSW-inherited Hercynian faults. The latter faults, together with more local NE-SW and NW-SE faults, compartmentalize the N-S-oriented basement rocks. This is relevant for geothermal prospection where the N-S faults are the main targets because fluid flow through other fault systems is deemed restricted. With a focus on the interface between the Northern Vosges and the Upper Rhine Graben, we also demonstrate considerable segmentation on the main graben boundary faults. ©2020. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187850
作者单位	Université de Lorraine, CNRS, GeoRessources, Nancy, France; Institut de Physique du Globe de Strasbourg (IPGS); UMR 7516; Université de Strasbourg/EOST, CNRS, Strasbourg, France
推荐引用方式 GB/T 7714	Bertrand L.,Gavazzi B.,Mercier de Lépinay J.,et al. On the Use of Aeromagnetism for Geological Interpretation: 2. A Case Study on Structural and Lithological Features in the Northern Vosges[J],2020,125(5).
APA	Bertrand L.,Gavazzi B.,Mercier de Lépinay J.,Diraison M.,Géraud Y.,&Munschy M..(2020).On the Use of Aeromagnetism for Geological Interpretation: 2. A Case Study on Structural and Lithological Features in the Northern Vosges.Journal of Geophysical Research: Solid Earth,125(5).
MLA	Bertrand L.,et al."On the Use of Aeromagnetism for Geological Interpretation: 2. A Case Study on Structural and Lithological Features in the Northern Vosges".Journal of Geophysical Research: Solid Earth 125.5(2020).