Chemical and isotopic compositions of authigenic carbonates from the area of the Sakhalin-Deryugin gas anomaly, Sea of Okhotsk

Features of sedimentation of carbonate mineral associations in the northeastern shelf of Sakhalin and other regions of the Sea of Okhotsk are considered. Special attention is paid to correlation between carbonate neoformations and abnormal fluxes of methane. In bottom sediments with high contents of...

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Bibliographic Details
Main Authors: Obzhirov, Anatoly I, Astakhov, Anatolii S, Astakhova, N V
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2000
Subjects:
Akademik A Nesmeyanov
Akademik M.A. Lavrentyev
AN_1993
AN25-936
Archive of Ocean Data
ARCOD
BC
Box corer
GC
Gravity corer
LV27/GREGORY
LV27-1
LV27-1A
LV27-2
MULT
Multiple investigations
Obzh-82156
Obzh-89228
Obzh-9312
Sea of Okhotsk
Sakhalin
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.761748
https://doi.org/10.1594/PANGAEA.761748
Description
Summary:Features of sedimentation of carbonate mineral associations in the northeastern shelf of Sakhalin and other regions of the Sea of Okhotsk are considered. Special attention is paid to correlation between carbonate neoformations and abnormal fluxes of methane. In bottom sediments with high contents of methane carbonate-sulfide associations occur, their generation has been influenced by gas (mostly methane) fields. Joint consideration of distribution of gas and geochemical fields and mineral associations in the Sea of Okhotsk allows to understand better a mechanism of mineral generation in bottom sediments, possible formation of ore accumulations, and to use them as indicators for prognosis of mineral resources.

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