Universität zu Köln

Pint, Anna, Engel, Max ORCID: 0000-0002-2271-4229, Melzer, Sandra, Frenzel, Peter, Plessen, Birgit and Brueckner, Helmut (2017). HOW TO DISCRIMINATE ATHALASSIC AND MARGINAL MARINE MICROFAUNAS: FORAMINIFERA AND OTHER FOSSILS FROM AN EARLY HOLOCENE CONTINENTAL LAKE IN NORTHERN SAUDI ARABIA. J. Foraminifer. Res., 47 (2). S. 175 - 188. CAMBRIDGE: CUSHMAN FOUNDATION FORAMINIFERAL RES. ISSN 0096-1191

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Abstract

The occurrence of athalassic foraminiferal species, along with the brackish-water ostracod Cyprideis torosa, the barnacle Amphibalanus amphitrite, and brackish-water gastropods, prove the existence of a saline lake at Tayma, northern Saudi Arabia, during the early to mid-Holocene. Outcrops at the former shoreline, as well as a single sediment core, allow a reconstruction of the history of the main lake phase. Whereas these outcrops contain masses of calcareous micro- and macro- fossils, the core from the modern sabkha does not. Four foraminiferal species were identified: Ammonia tepida is dominant, Quinqueloculina seminula is common, Flintinoides labiosa and Discorinopsis aguayoi are rare. Sieve-pore analysis and shell chemistry of C. torosa, as well as varying but generally high proportions of test anomalies (up to 50%) in foraminifers, indicate fluctuating, mostly hypersaline lacustrine conditions. We suggest, based on these results and on a literature overview on the worldwide distribution of Quaternary athalassic foraminifer taxa, that a combination of low diversity, exclusively marginal marine taxa, combined with occurrences of test anomalies >10% can be used to recognize athalassic saline waters in the fossil record.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pint, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Engel, Max UNSPECIFIED orcid.org/0000-0002-2271-4229 UNSPECIFIED Melzer, Sandra UNSPECIFIED UNSPECIFIED UNSPECIFIED Frenzel, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Plessen, Birgit UNSPECIFIED UNSPECIFIED UNSPECIFIED Brueckner, Helmut UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-234304
DOI:	10.2113/gsjfr.47.2.175
Journal or Publication Title:	J. Foraminifer. Res.
Volume:	47
Number:	2
Page Range:	S. 175 - 188
Date:	2017
Publisher:	CUSHMAN FOUNDATION FORAMINIFERAL RES
Place of Publication:	CAMBRIDGE
ISSN:	0096-1191
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language AGE CALIBRATION CURVES; MORPHOLOGICAL ABNORMALITIES; SOUTHERN ARABIA; TEPIDA CUSHMAN; FRESH-WATER; CAL BP; SEA; ENVIRONMENTS; QUATERNARY; SEDIMENTS Multiple languages Paleontology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/23430