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Palaeogene non-marine molluscs from Oman: implications for the timing of uplift of the Dhofar Plateau and the opening of the Red Sea and Gulf of Aden

By
Martin Pickford
Martin Pickford
1
Département Histoire de la Terre, UMR 7207, CR2P du CNRS, C.P. 38, 8 rue Buffon, 75005, Paris, France
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Emmanuel Gheerbrant
Emmanuel Gheerbrant
1
Département Histoire de la Terre, UMR 7207, CR2P du CNRS, C.P. 38, 8 rue Buffon, 75005, Paris, France
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Sevket Sen
Sevket Sen
1
Département Histoire de la Terre, UMR 7207, CR2P du CNRS, C.P. 38, 8 rue Buffon, 75005, Paris, France
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Jack Roger
Jack Roger
2
1466 rue Rodolphe Richard, 45160-Olivet, France
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Zaher Sulaimani
Zaher Sulaimani
3
Projects Public Authority of Electricity and Water, 130 Al Azaiba, PO Box 1889, Sultanate of Oman
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Published:
January 01, 2014

Abstract

A collection of terrestrial and freshwater snails from the Late Eocene to earliest Early Oligocene Zalumah Formation at Wadi Darbat, near Salalah, Oman is of importance on account of its taxonomic composition, its palaeoecological indications and its biogeographic affinities which are clearly tropical African; these are very different from the extant non-marine snail fauna of Oman which is typical of the Mediterranean belt. In addition, these fossil snails are by far the oldest-known representatives of their respective genera. The Late Eocene Zalumah deposits which yielded the molluscs accumulated just above sea level, as revealed by the admixture of marine, brackish water and freshwater taxa as well as fully terrestrial gastropods. These deposits now vary in altitude from near sea level at Taqah (Wadi Darbat) to over 930 m at Thaytiniti. Uplift of the Dhofar Plateau therefore must have occurred later than the Early Oligocene. The biogeographic affinities of the snails confirms that the Arabian Peninsula was part of the African continent at the time of deposition and that the opening of the Red Sea and the Gulf of Aden occurred later than the Early Oligocene.

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Contents

Geological Society, London, Special Publications

Tectonic Evolution of the Oman Mountains

H. R. Rollinson
H. R. Rollinson
University of Derby, UK
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M. P. Searle
M. P. Searle
Oxford University, UK
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I. A. Abbasi
I. A. Abbasi
Sultan Qaboos University, Muscat, Oman
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A. I. Al-Lazki
A. I. Al-Lazki
Petroleum Development Oman, Oman
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M. H. Al Kindi
M. H. Al Kindi
Petroleum Development Oman, Oman
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Geological Society of London
Volume
392
ISBN electronic:
9781862396685
Publication date:
January 01, 2014

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