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Paleoenvironment of the eastern Tethys in the early Paleocene

Gerta Keller and Chaim Benjamini
Paleoenvironment of the eastern Tethys in the early Paleocene
Palaios (October 1991) 6 (5): 439-464


Paleoenvironmental conditions of the early Paleocene eastern Tethys have been inferred based on carbonate sedimentation, biostratigraphy, and planktic foraminiferal assemblages of five sections from the Negev of Israel. In the earliest Paleocene at least three intervals of erosion or nondeposition of sediments have been identified (K/T, P0/P1a, P1a/P1b boundaries) in addition to a black pyrite- and organic-rich clay layer about 1.5 to 3.0 m above the K/T boundary (Subzone P1b/P1c, upper Chron 29N). These hiatuses appear to be widespread and correlate with global sea level fluctuations. Danian planktic foraminiferal assemblages of the eastern Tethys are dominated by alternating abundance maxima between triserial (Guembelitria) and biserial (Woodringina, Chiloguembelina) species. Biogeographic distribution of these taxa indicates that both groups thrived in shallow continental shelf regions. Moreover, abundance maxima of triserial taxa seem to correspond to delta (super 13) C depletion intervals, which indicate low surface productivity, whereas abundance maxima of biserial taxa correspond to enriched delta (super 13) C intervals which imply high surface productivity. These paleoceanographic changes may be related to sea level high- and lowstands during the earliest Paleocene. Stable isotope analyses of Danian species will be necessary to confirm these observations and to reconstruct oceanic conditions in both open marine and continental shelf regions of the early Paleocene.

ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 6
Serial Issue: 5
Title: Paleoenvironment of the eastern Tethys in the early Paleocene
Affiliation: Princeton Univ., Dep. Geol. and Geophys. Sci., Princeton, NJ, United States
Pages: 439-464
Published: 199110
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 53
Accession Number: 1992-008685
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. cols., sketch map
Secondary Affiliation: Univ. Negev, ISR, Israel
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 1992
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