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Middle, Upper Jurassic and Lower Cretaceous sedimentary environments of the Djebel Nefusa region, northwestern Libya

Published online by Cambridge University Press:  03 March 2015

Richard J. Hodgkinson  and
Christopher D. Walley
Richard J. Hodgkinson
Affiliation:
Department of Geology, University College Swansea, Swansea, Wales
Christopher D. Walley
Affiliation:
Department of Geology, University College Swansea, Swansea, Wales
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Extract

Carbonate and clastic sediments of Jurassic and Cretaceous age are exposed along the fault-scarp of Djebel Nefusa in north-western Libya. Previous geological investigations have been mainly restricted to the eastern sector of the scarp. Recent studies by the authors in the western sector of Djebel Nefusa and on equivalent sediments in southern Tunisia have allowed the first regional interpretation of these rocks.

The area studied lies geographically and geologically at the edge of the Saharan Platform, a large cratonic block, composed of rocks of Precambrian-Palaeozoic age. To the north and east lies a downfaulted sedimentary basin (Gabes-Sabratha Basin) containing a large thickness of Mesozoic sediments. The location of the sections measured along Djebel Nefusa are depicted in Fig.1.

The stratigraphic nomenclature of the rock succession of Djebel Nefusa was first established in the east and continued laterally towards the west by later workers. Difficulties in the application of this nomenclature are presented by the recognition of facies changes previously overlooked by earlier investigators. However, as a framework for understanding these changes and the sedimentary processes which caused them, the stratigraphy erected by Magnier (1963) is adopted.

Type
Research Article
Information
Libyan Studies , Volume 8 , 1977 , pp. 45 - 49
Copyright
Copyright © Society for Libyan Studies 1977

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References

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