Rheology, stress-mapping, and hydrothermal mineralization — the example of structurally-controlled gold-antimony deposits in South Africa : J. R. Vearncombe & P. W. Holyland, South African Journal of Geology, 98(4), 1995, pp 415–429
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 165 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0148-9062
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✦ Synopsis
REMOTE SENSING
eastward to the undeformed Adria foreland. From the analysis of 64 wells, we observed SW,, oriented around NE-SW, perpendicular to the trend of the Apennines, both within the belt and in the eastern foredeep. Some variations are observed in the few wells analyzed on the Tyrrhenian shelf, possibly due to local tectonic structures, such as transverse NE-SW oriented extensional basins. Breakout data demonstrate that Quatemary compressional tectonism has ended, as S& is oriented NE also in the undeformed foreland as far as 50 km NE from the seismic belt. In the easternmost sector of the Adria foreland there are suggestions of a nearly isotropic horizontal stress field, as most wells do not show significant elliptic&y.