Middle Coniacian-Santonian foraminiferal bioevents around the Mangyshlak Peninsula and Russian Platform

Ludmila F. Kopaevich, Vladimir N. Beniamovski, Aleksey Yu Sadekov

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The distribution of foraminifers and some macrofossils at the Coniacian/Santonian boundary in four selected sections, two on the Mangyshlak Peninsula (West Kazakhstan) and two on the Russian Platform, are compared in this paper. The first occurrence (FO) of Cladoceramus undulatoplicatus (F. Roemer) is the primary marker for the boundary in the Mangyshlak area. Specimens of the Sphenoceramus pachti-cardissoides group occur at the base of the Santonian on the Russian Platform. This is the equivalent to the "Sphenoceramus Teilzone", which characterizes the Coniacian/Santonian boundary interval in Germany. Benthic foraminifers predominate around the boundary in both Mangyshlak and on the Russian Platform and may be used as secondary markers. The following bioevents were recognised close to the boundary in these areas: (1) abundant Stensioeina emscherica (Baryschnikova), the simultaneous FO of Gavelinella vombensis (Brotzen), and the FO of G. thalmanni (Brotzen); (2) the last occurrence (LO) of G. thalmanni (Brotzen); (C) the FOs of Neoflabellina suturalis suturalis (Cushman) and Stensioeina exculpta exculpta (Reuss); and (4) the FO of rare N. gibbera (Wedekind) just below the FO of Cladoceramus undulatoplicatus (F. Roemer).

Original languageEnglish
Pages (from-to)108-118
Number of pages11
JournalCretaceous Research
Volume28
Issue number1
DOIs
Publication statusPublished - Feb 2007
Externally publishedYes

Fingerprint

Coniacian
Santonian
benthic foraminifera
foraminifera

Cite this

@article{a9e0113d55074f8c9fb0af0e97b2a25d,
title = "Middle Coniacian-Santonian foraminiferal bioevents around the Mangyshlak Peninsula and Russian Platform",
abstract = "The distribution of foraminifers and some macrofossils at the Coniacian/Santonian boundary in four selected sections, two on the Mangyshlak Peninsula (West Kazakhstan) and two on the Russian Platform, are compared in this paper. The first occurrence (FO) of Cladoceramus undulatoplicatus (F. Roemer) is the primary marker for the boundary in the Mangyshlak area. Specimens of the Sphenoceramus pachti-cardissoides group occur at the base of the Santonian on the Russian Platform. This is the equivalent to the {"}Sphenoceramus Teilzone{"}, which characterizes the Coniacian/Santonian boundary interval in Germany. Benthic foraminifers predominate around the boundary in both Mangyshlak and on the Russian Platform and may be used as secondary markers. The following bioevents were recognised close to the boundary in these areas: (1) abundant Stensioeina emscherica (Baryschnikova), the simultaneous FO of Gavelinella vombensis (Brotzen), and the FO of G. thalmanni (Brotzen); (2) the last occurrence (LO) of G. thalmanni (Brotzen); (C) the FOs of Neoflabellina suturalis suturalis (Cushman) and Stensioeina exculpta exculpta (Reuss); and (4) the FO of rare N. gibbera (Wedekind) just below the FO of Cladoceramus undulatoplicatus (F. Roemer).",
keywords = "Bioevents, Biostratigraphy, Coniacian/Santonian boundary, Foraminifers, Mangyshlak, Russian Platform",
author = "Kopaevich, {Ludmila F.} and Beniamovski, {Vladimir N.} and Sadekov, {Aleksey Yu}",
year = "2007",
month = "2",
doi = "10.1016/j.cretres.2006.05.018",
language = "English",
volume = "28",
pages = "108--118",
journal = "Cretaceous Research",
issn = "0195-6671",
publisher = "Academic Press",
number = "1",

}

Middle Coniacian-Santonian foraminiferal bioevents around the Mangyshlak Peninsula and Russian Platform. / Kopaevich, Ludmila F.; Beniamovski, Vladimir N.; Sadekov, Aleksey Yu.

In: Cretaceous Research, Vol. 28, No. 1, 02.2007, p. 108-118.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Middle Coniacian-Santonian foraminiferal bioevents around the Mangyshlak Peninsula and Russian Platform

AU - Kopaevich, Ludmila F.

AU - Beniamovski, Vladimir N.

AU - Sadekov, Aleksey Yu

PY - 2007/2

Y1 - 2007/2

N2 - The distribution of foraminifers and some macrofossils at the Coniacian/Santonian boundary in four selected sections, two on the Mangyshlak Peninsula (West Kazakhstan) and two on the Russian Platform, are compared in this paper. The first occurrence (FO) of Cladoceramus undulatoplicatus (F. Roemer) is the primary marker for the boundary in the Mangyshlak area. Specimens of the Sphenoceramus pachti-cardissoides group occur at the base of the Santonian on the Russian Platform. This is the equivalent to the "Sphenoceramus Teilzone", which characterizes the Coniacian/Santonian boundary interval in Germany. Benthic foraminifers predominate around the boundary in both Mangyshlak and on the Russian Platform and may be used as secondary markers. The following bioevents were recognised close to the boundary in these areas: (1) abundant Stensioeina emscherica (Baryschnikova), the simultaneous FO of Gavelinella vombensis (Brotzen), and the FO of G. thalmanni (Brotzen); (2) the last occurrence (LO) of G. thalmanni (Brotzen); (C) the FOs of Neoflabellina suturalis suturalis (Cushman) and Stensioeina exculpta exculpta (Reuss); and (4) the FO of rare N. gibbera (Wedekind) just below the FO of Cladoceramus undulatoplicatus (F. Roemer).

AB - The distribution of foraminifers and some macrofossils at the Coniacian/Santonian boundary in four selected sections, two on the Mangyshlak Peninsula (West Kazakhstan) and two on the Russian Platform, are compared in this paper. The first occurrence (FO) of Cladoceramus undulatoplicatus (F. Roemer) is the primary marker for the boundary in the Mangyshlak area. Specimens of the Sphenoceramus pachti-cardissoides group occur at the base of the Santonian on the Russian Platform. This is the equivalent to the "Sphenoceramus Teilzone", which characterizes the Coniacian/Santonian boundary interval in Germany. Benthic foraminifers predominate around the boundary in both Mangyshlak and on the Russian Platform and may be used as secondary markers. The following bioevents were recognised close to the boundary in these areas: (1) abundant Stensioeina emscherica (Baryschnikova), the simultaneous FO of Gavelinella vombensis (Brotzen), and the FO of G. thalmanni (Brotzen); (2) the last occurrence (LO) of G. thalmanni (Brotzen); (C) the FOs of Neoflabellina suturalis suturalis (Cushman) and Stensioeina exculpta exculpta (Reuss); and (4) the FO of rare N. gibbera (Wedekind) just below the FO of Cladoceramus undulatoplicatus (F. Roemer).

KW - Bioevents

KW - Biostratigraphy

KW - Coniacian/Santonian boundary

KW - Foraminifers

KW - Mangyshlak

KW - Russian Platform

UR - http://www.scopus.com/inward/record.url?scp=33847292939&partnerID=8YFLogxK

U2 - 10.1016/j.cretres.2006.05.018

DO - 10.1016/j.cretres.2006.05.018

M3 - Article

VL - 28

SP - 108

EP - 118

JO - Cretaceous Research

JF - Cretaceous Research

SN - 0195-6671

IS - 1

ER -