Chemical composition of basalts from coarse debris of the Kara Sea bottom sediments

Study of basaltic debris from the Kara Sea bottom has shown its similarity to traps of the Eastern Siberia in mineralogy, structures and chemical composition. In comparison with oceanic tholeiites, the source of traps and Kara Sea basin basaltic melts was enriched in REE and some other incompatible...

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Bibliographic Details
Main Authors: Lisitzin, Alexander P, Kharin, Gennady S, Chernysheva, E A
Format: Dataset
Language:English
Published: PANGAEA 2004
Subjects:
Archive of Ocean Data
ARCOD
BC
Box corer
DM49
DM49-4380-1
DM49-4385-A
DM49-4391-2
DM49-4400-1
DM49-4400BC
DM49-4402-1
DM49-4405-1
DM49-4406-1
DM49-4410-1
DM49-4411-1
DM49-4412-1
Dmitry Mendeleev
GC
Grab
Gravity corer
Kara Sea
SPASIBAIII
Iceland
Siberia
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.762650
https://doi.org/10.1594/PANGAEA.762650
Description
Summary:Study of basaltic debris from the Kara Sea bottom has shown its similarity to traps of the Eastern Siberia in mineralogy, structures and chemical composition. In comparison with oceanic tholeiites, the source of traps and Kara Sea basin basaltic melts was enriched in REE and some other incompatible elements. K-Ar dating of two samples of supposed autochtonous location from the eastern part of the Kara Sea basin has shown 209 and 218 Ma - younger than traps (247-248 Ma). Origin of Siberian traps used to connect with action of the mantle plume (Iceland plume, according to geodinamic reconstruction). Our new age data may be interpreted as an evidence of the Siberian plate moving over the head of plume.

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