Heterogeneous crystalline crust controls the shallow thermal field - a case study of Hessen (Germany)

被引：5

作者：

Freymark, Jessica ^{[1
,2
]}

Sippel, Judith ^{[1
]}

Scheck-Wenderoth, Magdalena ^{[1
,2
]}

Baer, Kristian ^{[3
]}

Stiller, Manfred ^{[1
]}

Kracht, Matthias ^{[4
]}

Fritsche, Johann-Gerhard ^{[4
]}

机构：

[1] Helmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, D-14473 Potsdam, Germany

[2] Rhein Westfal TH Aachen, Inst Geol & Geochem Petr & Coal, Fac Georesources & Mat Engn, D-52062 Aachen, Germany

[3] Tech Univ Darmstadt, Inst Appl Geosci, D-64287 Darmstadt, Germany

[4] HLUG, D-65022 Wiesbaden, Germany

来源：

EUROPEAN GEOSCIENCES UNION GENERAL ASSEMBLY 2015 - DIVISION ENERGY, RESOURCES AND ENVIRONMENT, EGU 2015 | 2015年 / 76卷

关键词：

Upper Rhine Graben; structural model; gravity modelling; conductive thermal model; Variscan domains; EUROPEAN BASIN SYSTEM; CONTINENTAL-CRUST; SEISMIC VELOCITY; RHENISH MASSIF; HEAT; SEDIMENTATION; LITHOSPHERE; VARISCIDES; TECTONICS; DENSITY;

D O I：

10.1016/j.egypro.2015.07.837

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

We present a seismic-and 3D-gravity-constrained lithospheric-scale 3D structural model of Hessen that differentiates 7 sedimentary units, 5 Variscan upper crustal bodies, the lower crystalline crust and the lithospheric mantle. To predict the present-day subsurface temperatures, we solve the steady-state conductive heat equation by using a 3D FE method and assigning lithology-dependent thermal properties. We show that the thermal field is mainly controlled by the varying radiogenic heat production in the crystalline crust, which results in a colder NW and a warmer SE domain. Locally, this regional trend is superimposed by thermal blanketing of low-conductive sediments leading to higher temperatures. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：331 / 340

页数：10

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