Freymark, J. ; Sippel, J. ; Scheck-Wenderoth, M. ; Bär, K. ; Stiller, M. ; Kracht, M. ; Fritsche, J.-G. (2015):
Heterogeneous crystalline crust controls the shallow thermal field – a case study of Hessen (Germany).
In: Energy Procedia, 76 (August 2015), pp. 331-340. Elsevier ScienceDirect, ISSN 18766102,
DOI: 10.1016/j.egypro.2015.07.837,
[Article]
Abstract
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 presentday 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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2015 |
| Creators: | Freymark, J. ; Sippel, J. ; Scheck-Wenderoth, M. ; Bär, K. ; Stiller, M. ; Kracht, M. ; Fritsche, J.-G. |
| Title: | Heterogeneous crystalline crust controls the shallow thermal field – a case study of Hessen (Germany) |
| Language: | English |
| Abstract: | 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 presentday 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. |
| Journal or Publication Title: | Energy Procedia |
| Journal Volume: | 76 |
| Issue Number: | August 2015 |
| Publisher: | Elsevier ScienceDirect |
| Uncontrolled Keywords: | Upper Rhine Graben; structural model; gravity modelling; conductive thermal model; Variscan domains |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Earth Science 11 Department of Materials and Earth Sciences > Earth Science > Geothermal Science and Technology |
| Date Deposited: | 06 Nov 2015 15:45 |
| DOI: | 10.1016/j.egypro.2015.07.837 |
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