Chemical composition of rocks and minerals from the Weddell Sea

This work is devoted to results of the joint Russian-German geodynamic research carried out in the Weddell Sea and West Antarctica during cruise ANT-XXII/3 of R/V Polarstem in 2005. The study of rock samples collected from the sea floor showed that a heterogeneous structure of the Weddell Sea was fo...

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Bibliographic Details
Main Authors: Kurentsova, Natalia A, Frolova, Tatyana I, Udintsev, Gleb B, Roshchina, I A
Format: Dataset
Language:English
Published: PANGAEA 2007
Subjects:
ANT-XXII/3
Archive of Ocean Data
ARCOD
Polarstern
PS67/057TR
PS67/059TR
PS67/074TR
PS67/078TR
PS67/080TR
PS67/088TR
PS67/094TR
PS67/102TR
PS67/110TR
PS67/121TR
PS67/142TR
PS67/151TR
PS67/153TR
PS67/154TR
PS67 ANDEEP 3
TRAWL
Trawl net
Weddell Sea
Weddell
West Antarctica
Antarc*
Antarctica
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.753156
https://doi.org/10.1594/PANGAEA.753156
Description
Summary:This work is devoted to results of the joint Russian-German geodynamic research carried out in the Weddell Sea and West Antarctica during cruise ANT-XXII/3 of R/V Polarstem in 2005. The study of rock samples collected from the sea floor showed that a heterogeneous structure of the Weddell Sea was formed by spatiotemporal combination of destruction of the continental crust, progressive thalassogenesis (oceanization-taphrogenesis), and rifting, as opposed to spreading origin. High post-consolidation mobility during the destruction stage led to areal dismembering and high permeability of the continental crust, as well as to tectonomagmatic activation. The main mechanism of re-working of the continental crust is recognized to be magmatic replacement by basic-ultrabasic mantle material with formation of the secondary oceanic crust and preservation of relics of the continental crust. The Earth's endogenous activity was driven by transmagmatic fluid flows, which ascended from the melted core and caused transformation of the Earth's crust and mantle.

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