Clay minerals in bottom sediments of the St. Anna Trough

This paper is devoted to studies of clay minerals from two cores collected in the northern and central regions of the St. Anna Trough, the largest trough of the Kara Sea. Upper Quaternary glacial, glaciomarine, and marine deposits are characterized by various contents of kaolinite, chlorite, illite,...

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Bibliographic Details
Main Authors: Krylov, Alexey A, Weiel, Dominik, Sapega, V F, Ivanov, Gennadiy I, Stein, Ruediger, Vogt, Christoph, Rys'kova, E O
Format: Dataset
Language:English
Published: PANGAEA 2008
Subjects:
Archive of Ocean Data
ARCOD
KAL_R
Kara Sea/St. Anna Trough
Kasten corer RUS
PL-1994
PL94-07
PL94-29
Professor Logachev
Kara Sea
Rus’
St. Anna Trough
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.727132
https://doi.org/10.1594/PANGAEA.727132
Description
Summary:This paper is devoted to studies of clay minerals from two cores collected in the northern and central regions of the St. Anna Trough, the largest trough of the Kara Sea. Upper Quaternary glacial, glaciomarine, and marine deposits are characterized by various contents of kaolinite, chlorite, illite, and smectite. It is established that, from older to younger deposits, amounts of kaolinite and chlorite generally decrease, while those of illite and smectite, on the contrary, increase. A joint analysis of distributions of clay and heavy minerals over the section allowed us to refine position of sources for terrigenous matter and their temporal variability. It is shown changes in sources of supply were directly related to climate changes that occurred when passing from glacial to marine sedimentation environments.

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