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Volume 1, 2006 - Number 1
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Infracambrian rocks as "exotic" clastics in Hasawnah Sandstone Formation, Wãw al Kabir area, Libya
Janos Kalmar
(Geological Institute of Hungary, H-1142 Stefania ut Budapest) Salah M. Turki (Industrial Research Center, P. box 20039, Tripoli, Libya) Infracambrian rocks as "exotic" clastics in Hasawnah Sandstone Formation, Wãw al Kabir area, Libya Full text
Abstract:
In Cambrian aged Hasáwnah Formation from Wāw al Kabir area (Central Sahara, Lybia), among the detritic grains of the sandstone, a few „exotic” grains were identified. We described rock fragments of 0,1–1,4 mm size: biotitic granite or gneiss, quartzose micaschists, sericitic-chloritic schists, graphitic schist, blastopsamitic silt and sandstone, acide volcanic rocks, altered basic glass and chert. Part of the well rounded quartz grains shows truncated owergrowth rims. They represent, in fact, fragments of older sandstone with overgrowth quartz cement. |
(c) 2006 - 2024 , Publisher-Asociația Carpatică de Mediu și Științele Pământului (Carpathian Association of Environment and Earth Sciences) |