TY - JOUR

T1 - Fossil travertines and quasi-travertine in the Minusa basin (West Siberia)

T2 - structure, composition, and comparative analysis

AU - Fedoseev, G. S.

AU - Vorontsov, A. A.

AU - Orekhov, A. A.

PY - 2017/8/1

Y1 - 2017/8/1

N2 - We study a carbonate body looking like a classical fossil travertine which was discovered in the Chebaki-Balakhta basin within the Minusa trough (Khakassia, Russia) and called quasi-travertine. It is a thin layer sandwiched between a basalt-dolerite sill and calcareous siltstone. Comprehensive studies of the quasi-travertine and its comparison with Devonian fossil travertines located a few kilometers away in terms of structure and composition have made the basis for its formation model. According to this model, the quasi-travertine has had a two-stage history: deposition and subsequent hydrothermal metasomatism. Laminated limestone coexisting with calcareous siltstone of the Early Devonian Shunet Formation formed during the first stage and then experienced hydrothermal metasomatism with precipitation of secondary calcite, prehnite, and pyrobitumen (kerite).

AB - We study a carbonate body looking like a classical fossil travertine which was discovered in the Chebaki-Balakhta basin within the Minusa trough (Khakassia, Russia) and called quasi-travertine. It is a thin layer sandwiched between a basalt-dolerite sill and calcareous siltstone. Comprehensive studies of the quasi-travertine and its comparison with Devonian fossil travertines located a few kilometers away in terms of structure and composition have made the basis for its formation model. According to this model, the quasi-travertine has had a two-stage history: deposition and subsequent hydrothermal metasomatism. Laminated limestone coexisting with calcareous siltstone of the Early Devonian Shunet Formation formed during the first stage and then experienced hydrothermal metasomatism with precipitation of secondary calcite, prehnite, and pyrobitumen (kerite).

KW - basalt

KW - dolerite

KW - fossil travertine

KW - Minusa basin

KW - prehnite

KW - quasi-travertine

KW - shallow sill

KW - sparite

KW - CARBONATES

KW - LATE QUATERNARY

KW - STROMATOLITES

KW - TROUGH

UR - http://www.scopus.com/inward/record.url?scp=85026896329&partnerID=8YFLogxK

U2 - 10.1016/j.rgg.2017.07.003

DO - 10.1016/j.rgg.2017.07.003

M3 - Article

AN - SCOPUS:85026896329

VL - 58

SP - 922

EP - 934

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 8

ER -