Universität zu Köln

Mischke, Steffen ORCID: 0000-0003-3821-8497, Opitz, Stephan, Kalbe, Johannes, Ginat, Hanan and Al-Saqarat, Bety ORCID: 0000-0002-6933-0150 (2015). Palaeoenvironmental inferences from late Quaternary sediments of the Al Jafr Basin, Jordan. Quat. Int., 382. S. 154 - 168. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1873-4553

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Abstract

Sedimentological, palaeontological and mineralogical analyses of sediments from the endorheic Al Jafr Basin were conducted to better understand the depositional and hydrological conditions on the southern Jordan Plateau in the late Quaternary. Surficially exposed carbonate-rich sediments in the western part of the basin contain ostracod (micro-crustacean) shells of Ilyocypris cf. bradyi, Candona neglecta, Heterocypris salina, Fabaeformiscandona fabaeformis, Pseudocandona sp. and Herpetocypris brevicaudata. The shells of these and other more rare species, and charophyte and mollusc remains indicate that the sediments were formed in a wetland setting of shallow freshwater to slightly oligohaline ponds, streams and swamps. The present more northern distribution of some of the recorded taxa implies that climate conditions were probably cooler during the wetland formation. Radiocarbon age data for biogenic carbonate from two locations suggest that the wetland setting existed during the second half of Marine Isotope Stage (MIS) 3 or possibly earlier. A significantly higher water table must have existed in the basin during wetland formation; and wetter climate conditions are inferred for the catchment or at least for its highest and most humid westernmost part. Deflation and local sediment accumulation by wind and occasional sheet-wash events apparently prevailed in the region since MIS 2. Our newly presented data and inferences do not support the reconstruction of a previously reported large and relatively deep Pleistocene lake in the Al Jafr Basin. However, more extensive studies are certainly required for a detailed assessment of the Quaternary hydrological conditions in southern Jordan. (C) 2014 Elsevier Ltd and INQUA. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Mischke, Steffen UNSPECIFIED orcid.org/0000-0003-3821-8497 UNSPECIFIED Opitz, Stephan UNSPECIFIED UNSPECIFIED UNSPECIFIED Kalbe, Johannes UNSPECIFIED UNSPECIFIED UNSPECIFIED Ginat, Hanan UNSPECIFIED UNSPECIFIED UNSPECIFIED Al-Saqarat, Bety UNSPECIFIED orcid.org/0000-0002-6933-0150 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-392706
DOI:	10.1016/j.quaint.2014.12.041
Journal or Publication Title:	Quat. Int.
Volume:	382
Page Range:	S. 154 - 168
Date:	2015
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1873-4553
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HOLOCENE ENVIRONMENTS; CLIMATE; DESERT; PLEISTOCENE; CONSTRAINTS; SPELEOTHEMS; OSTRACODS; LEVANT; LAKE Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/39270