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GEOREF RECORD

Faunal, erosional, and CaCO (sub 3) events in the early Tertiary eastern Tethys

Gerta Keller, Chaim Benjamini, Mordeckai Magaritz and Shimon Moshkovitz
Faunal, erosional, and CaCO (sub 3) events in the early Tertiary eastern Tethys (in Global catastrophes in Earth history; an interdisciplinary conference on impacts, volcanism, and mass mortality, Virgil L. Sharpton (editor) and Peter D. Ward (editor))
Special Paper - Geological Society of America (1990) 247: 471-480

Abstract

The early Paleocene up to the initial establishment of stable oceanographie conditions after the K/T boundary event is examined in the eastern Tethys based on stratigraphie, faunal, CaCO (sub 3) , and delta (super 18) O isotope analyses. The earliest Paleocene is characterized by redeposited and bioturbated sediments containing abundant reworked Cretaceous foraminifers and nannofossils mixed in with a characteristic basal Tertiary assemblage. Widespread hiatuses are identified in this interval based on abrupt truncation of dominant species and outcrop observations: at the K/T boundary, the P0/P1a boundary, and at the Pla/Plb boundary. Species diversity increases rapidly above this interval. These faunal changes are accompanied by decreasing CaCO (sub 3) accumulation interrupted by three major negative excursions: at the K/T boundary, in Subzone P1b, and at the P1b/P1c boundary coincident with deposition of a black organic-rich clay layer and the decline and eventual extinction of the dominant Cretaceous survivor GUEMBELITRIA: Stable-carbonate deposition began in foraminiferal Subzone P1c and the nannofossil NP1/NP2 Zone boundary about 400,000 years after the K/T boundary event, correlative with initial stabilization of foraminiferal assemblages as indicated by relatively stable species populations.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 247
Title: Faunal, erosional, and CaCO (sub 3) events in the early Tertiary eastern Tethys
Title: Global catastrophes in Earth history; an interdisciplinary conference on impacts, volcanism, and mass mortality
Author(s): Keller, GertaBenjamini, ChaimMagaritz, MordeckaiMoshkovitz, Shimon
Author(s): Sharpton, Virgil L.editor
Author(s): Ward, Peter D.editor
Affiliation: Princeton Univ., Dep. Geol. Geophys. Sci., Princeton, NJ, United States
Affiliation: Lunar and Planet. Inst., Houston, TX, United States
Pages: 471-480
Published: 1990
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
Meeting name: Global catastrophes in Earth history; an interdisciplinary conference on impacts, volcanism, and mass mortality
Meeting location: Snowbird, UT, USA, United States
Meeting date: 19881020Oct. 20-23, 1988
References: 45
Accession Number: 1995-026171
Categories: Stratigraphy
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., sketch maps
Secondary Affiliation: Univ. Wash., USA, United StatesBen Gurion Univ. Negev, Beer Sheva, ISR, IsraelWeizman Inst. Sci., Rehovoth, ISR, IsraelGeol Surv. Isr., Jerusalem, ISR, Israel
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 199510
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