Gravity constrained by seismic to characterize geothermally relevant Paleozoic Permo-Carboniferous graben in the crystalline basement of Switzerland

Abdelfettah, Schill

Key words: Gravity, Butterworth filter, 3D Forward modelling, Finite Element, crystalline basement, Permo-Carboniferous graben.
Conference: European Geothermal Conference
Year: 2013
Session: 7 Petrothermal Systems (PS1-3)
Language: English
Paper number: PS1-12

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Abstract

Geothermal heat flow anomalies are often linked to graben structures at the top of the crystalline basement. Numerical thermo-hydraulic models have attributed a strong contribution to fluid flow in the fault zones building up the rim of these through structures. It is, however, a challenge to identify such or any other structures in the crystalline basement. In this paper, we present a 3D geological model based forward modelling employing finite element modelling and a detailed analysis of high- and bandpass Butterworth filters to assess the location and geometry of different geothermally relevant structures in the crystalline basement in Switzerland and elsewhere

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