Tectonic lineaments in Northern Libya

Stanisław Ostaficzuk


Described are linear structures readable on aerial photographs in form of dark strips, running approximately at azimuth 150o in the prolongation of the Giofra Graben in Northern Libya. Dark tint of the strips is caused by desert varnish. On the surface of the land the structures consist of large, up to 5 m blocks of the Had Limestone Member cemented with carbonate crusts. Both blocks and crusts are cut by fine veinlets of limestone mylonites. The lineaments developed in result of oscillation movements of deep faults connected with geotectonic development of the Sirte Basin which was probably influenced by the results of tides. of the Earth crust.

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