Discrimination of Jurassic volcanicity in strike-slip basin, Jabal Al Maqtal Area, South Eastern Desert, Egypt, using aster and field data

الملخص EN

As Jurassic sedimentary basins in Egypt are related most probably with hydrocarbon reservoirs, the present study throws light on one of NW-SE strike-slip basins in Jabal Al Maqtal area, southeastern desert of Egypt.

The basin boundaries are delineated and its volcano-sedimentary sequences are well discriminated using low pass filter for the 9th principal component and Principal Component Analysis (PCA) techniques for ASTER data.

The Late-Jurassic volcanics of the study area are represented by major eruptions of olivine basalts containing ultramafic mantle xenoliths and separated by two erosional surfaces.

The pillow-like basalts were erupted in lacustrine environment in the deepest proximal part of the master strike slip fault.

The shallow part of the basin is dominated by sandstone, conglomerate and siltstone sequence of Abu Ballas Formation including plant remains and intercalating with late Jurassic basalts.

It is topped with tuffs, ashes and rhyolites that had been erupted during late Cretaceous time through several volcanic cones aligned in NW-SE direction, and intercalated with Abu Agag Formation.