RADIOLARIAN BIOSTRATIGRAPHY OF THE UPPER CENOMANIAN–LOWER TURONIAN DEPOSITS IN THE SUBSILESIAN NAPPE (OUTER WESTERN CARPATHIANS)
Published: Jun 2004
Pages: 239 - 250
Authors: MARTA BAK
Abstract: The Upper Cenomanian-Lower Turonian flysch deposits of the Subsilesian Unit of the Outer Western Carpathians include a characteristic interval of green and black, siliceous shales with manganese concretions, benthonites and tuff, with abundant radiolarian fauna. Thirty two species of Radiolaria have been identified. Spherical cryptothoracic and cryptocephalic Nassellaria dominate in the assemblage. Two radiolarian species: Alievium superbum and Crucella cachensis have been proposed as biomarkers for setting the Cenomanian–Turonian boundary interval in the deposits of the Subsilesian series of the Polish Outer Carpathians.
Keywords: Cenomanian-Turonian boundary, Flysch Carpathians, Subsilesian Unit, Radiolaria
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