Science and earth science

Acta Geologica Polonica

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Acta Geologica Polonica | 2019 | vol. 69 | No 2 |

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Abstract

The lithostratigraphy, biostratigraphy, sequence stratigraphy, ammonite and inoceramid faunas of the Upper Albian, Cenomanian, and Lower Turonian Karai Formation, the highest unit of the Uttatur Group in the Pondicherry Sub-Basin of the Cauvery Basin in Tamil Nadu, south India, are documented. Detailed logs and descriptions of sections between Karai and Kulakkalnattam, Odiyam and Kunnam, and north-west of Garudamangalam are presented. They provide the evidence for an ammonite zonal scheme that can be correlated in detail with sequences developed in Europe, with successive Upper Albian zones of Pervinquieria (Subschloenbachia) rostrata and P. (S.) perinflata (the latter on slight evidence), Cenomanian zones of Mantelliceras mantelli, Cunningtoniceras cunningtoni, Calycoceras (Newboldiceras) asiaticum, Pseudo calycoceras harpax, Euomphaloceras septemseriatum and Pseudspidoceras footeanum. The Lower Turonian is represented by a Neoptychites cephalotus–Mytiloides borkari fauna. Over 120 ammonite species are described, of which Puzosia (Bhimaites) falx, Protacanthoceras parva, Watinoceras elegans, Euomphaloceras varicostatum, Kamerunoceras multinodosum, and Carthaginites multituberculatus are new. The new genus Kunnamiceras, with Ammonites tropicus Kossmat, 1865 as type species, is interpreted as a paedomorphic dwarf derivative of Pseudocalycoceras harpax (Stoliczka, 1864). Ammonite faunas from shales are dominated by feebly-ornamented taxa: leiostraca; those from sandstones by strongly ornamented taxa: trachyostraca, differences interpreted as reflecting the preferred habits of adults in life. 15 species of inoceramid bivalves, including a newly described species Inoceramus chiplonkari, are recognised, with a mixed East African–Euramerican–North Pacific affinity. On the basis of the stratigraphic framework developed, a sequence stratigraphic interpretation of the Karai Formation is proposed, and correlated with those recognised in Europe, Morocco, and the United States Gulf Coast and Western Interior.

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Authors and Affiliations

Andrew S. Gale
William J. Kennedy
Ireneusz Walaszczyk

Editorial office

Editorial Team


Editor-in-Chief

Piotr Łuczyński, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland


Editors

Piotr Łuczyński, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland

Anna Żylińska, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland


Assistant Editors

Bogusław Bagiński, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland

Andrzej Konon, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland

Ewa Krogulec, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland


Editorial Board

Zdzisław Bełka, Isotope Laboratory, Adam Mickiewicz University, Krygowskiego Str. 10, PL-61-680 Poznań, Poland

Olaf Elicki, Geological Institute, TU Bergakademie Freiberg (Freiberg University), Bernhard-von-Cotta Str. 2, 09599 Freiberg, Germany

Jerzy Fedorowski, Institute of Geology, Adam Mickiewicz University, Krygowskiego Str. 12, PL-61-680 Poznań, Poland

Peter J. Harries, NC State University, 1020 Main Campus Drive, Raleigh, NC 27695-7102, United States

John W.M. Jagt, Natuurhistorisch Museum Maastricht, de Bosquetplein 6, NL-6211 KJ Maastricht, Netherlands

William James Kennedy, Oxford University, Museum of Natural History, Parks Road, OX1 3PW Oxford, United Kingdom

Jacek Matyszkiewicz, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Mickiewicza Str. 30, PL-30-059 Kraków, Poland

Stanislaw Mazur, Institute of Geological Sciences, Polish Academy of Sciences, Senacka Str. 1, PL-31-002 Kraków, Poland

Jozef Michalik, Earth Science Institute, Slovak Academy of Sciences, Dúbravská cesta Str. 9, SK-840-05, Bratislava, Slovakia

Anatoly Mikhailovich Nikishin, Moscow State University, Department of Geology, 117234 Moscow B-234, Russian Federation

Nestor Oszczypko, Institute of Geological Sciences, Jagiellonian University, Gronostajowa Str. 3a, PL-30-387 Kraków, Poland

Grzegorz Racki, Faculty of Earth Sciences, University of Silesia, Będzińska Str. 60, PL-41-200 Sosnowiec, Poland

Ewa Słaby, Institute of Geological Sciences, Polish Academy of Sciences, Twarda Str. 51/55, PL-00-818 Warszawa, Poland

Michał Szulczewski, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland

Susan Turner, Queensland Museum, 122 Gerler Rd., Hendra 4101, Queensland, Australia

Alfred Uchman, Institute of Geological Sciences, Jagiellonian University, Gronostajowa Str. 3a, PL-30-387 Kraków, Poland

Ireneusz Walaszczyk, Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, PL-02-089 Warszawa, Poland

Markus Wilmsen, Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, Königsbrücker Landstr. 159, D-01109 Dresden, Germany

Andrzej Ryszard Żelaźniewicz, Institute of Geological Sciences, Polish Academy of Sciences, Podwale Str. 75, PL-50-449 Wrocław, Poland

Contact

Institute of Geology
University of Warsaw
Al. Zwirki i Wigury 93
02-089 Warszawa, Poland
Phone: +48-22-5540422
Fax: +48-22-5540001
e-mail: agp@uw.edu.pl

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