Seismotectonics and lithospheric stresses in the northern Fennoscandian shield

Wahlström, Rutger; Assinovskaya, B. A.

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Seismotectonics and lithospheric stresses in the northern Fennoscandian shield

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Wahlström, Rutger
2.6 Seismic Hazard and Stress Field, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Assinovskaya, B. A.
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Wahlström, R., Assinovskaya, B. A. (1998): Seismotectonics and lithospheric stresses in the northern Fennoscandian shield. - Geophysica, 34, 1-2, 51-61.

https://gfzpublic.gfz-potsdam.de/pubman/item/item_232478

Zusammenfassung

The seismicity, fault distribution and stress pattern of northern Fennoscandia are investigated. Some active fault zones are suggested, eg several faults exposed to large displacement at the late-glacial phase about 9000 yr ago. Stress orientations, derived from crack distribution and a few earthquake focal-mechanism solutions, are different in different areas. In some cases there is a good agreement with expectations from ridge-push generated and propagated compressive stress. Hoever, the inhomogeneity in the stress field of the region as a whole indicates contribution from local factors.