Biotically constrained palaeoenvironmental conditions of a mid-Holocene intertidal lagoon on the southern shore of the Arabian Gulf: evidence associated with a whale skeleton at Musaffah,Abu Dhabi,UAE |
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| Authors: | JR Stewart S Aspinall M Beech P Fenberg P Hellyer N Larkin SW Lokier FG Marx M Meyer R Miller PS Rainbow JD Taylor JE Whittaker K Al-Mehsin CJ Strohmenger |
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| Institution: | 1. Dipartimento di Scienze della Terra, Università di Pisa, 56126 Pisa, Italy;2. Dipartimento di Scienze dell''Ambiente e della Terra, Università diMilano Bicocca, 20126 Milano, Italy;3. D.O. Terre et Histoire de la Vie, Institut Royal des Sciences Naturelles de Belgique, 1000 Brussels, Belgium;4. Département Origines et Évolution, Muséum National d''Histoire Naturelle, Centre de Recherches sur la paléobiodiversité et les paléoenvironnements – CR2P (CNRS, MNHN, Sorbonne Université), 75005 Paris, France;5. Departamento de Paleontologia de Vertebrados, Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos, avenida Arenales 1256, Lima 14, Peru;6. Scuola di Scienze e Tecnologie, Università di Camerino, 62032 Camerino, Italy;1. Institute of Ecology and Earth Sciences, University of Tartu, Ravila 14A, 50411 Tartu, Estonia;2. Institut für Geologie, Universität Hamburg, Bundesstr. 55, 20146 Hamburg, Germany;3. Institute of Geology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia |
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| Abstract: | Whale remains (a left and right mandible, scapula, humerus and fragmentary radius and ulna as well as parts of the cranium and rostrum) belonging to a probable humpback whale (Megaptera cf. novaeangliae) were found in the well-described sabkha sequence exposed in the Musaffah Industrial Channel, Abu Dhabi, United Arab Emirates. More precisely, the whale remains were found in a series of sediments representing a range of lagoonal facies. The sediments surrounding the whale bones were age-dated at approximately 5200 14C yrs BP and are therefore interpreted to correspond to the previously documented late Flandrian sea-level peak, preceding a fall in sea-level which culminated in the supratidal sabkha overprint of the carbonates. Associated with the whale remains is an assemblage of molluscs, foraminifera and ostracods. Together with the inferred presence of sea grass and algae, these facies are interpreted to indicate a very shallow subtidal to intertidal lagoonal environment. Cirripede remains found associated with the skeleton were identified as those of the whale barnacle Coronula diadema and hence had their origins with the whale. Significantly, the low species diversity of microfossils suggests that higher salinities existed in the mid-Holocene lagoon than are present in modern counterparts. This is here inferred to be related to the onset of continental aridity in Arabia during the mid-Holocene. |
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