Ammonites and magnetostratigraphy of the Berriasian–Valanginian boundary deposits from eastern Crimea

Author:

Arkadiev Vladimir V.,Grishchenko Vladimir A.,Guzhikov Andrei Yu.,Manikin Aleksey G.,Savelieva Yuliya N.,Feodorova Anna A.,Shurekova Olga V.

Abstract

AbstractEuthymi, Crassicostatum and Callisto ammonite subzones, correlable with Paramimounum, Picteti, and Alpillensis subzones and probably with the Late Berriasian Otopeta Subzone of the Boissieri Standard Zone have been recognized in calcareous clays of the Berriasian-Valanginian boundary sequence in the Feodosiya district (eastern Crimea). The ammonite Leptoceras studeri (Ooster) suggests Late Berriasian to Early Valanginian age. Geomagnetic polarity indicates M16-M14r magnetozones. Therefore, the base of the Valanginian sequence in eastern Crimea should be placed within the M14r magnetozone.

Publisher

Walter de Gruyter GmbH

Subject

Geology

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