Abstract
The Baratal limestone in the Gorny Altai Mountains, southern Siberia, occurs as large allochthonous blocks within a Cambrian accretionary complex that developed around the Siberia craton. Before the final accretion to Siberia in the Cambrian, the terrigenous clastic-free Baratal limestone was deposited directly upon a basaltic basement with a geochemical signature identical to that of modern oceanic plateau. The Baratal limestone with 598±25 Ma (Early Vendian) Pb-Pb isochron age consists of three distinct facies; 1) massive lime mudstone with ooids and stromatolites, 2) bedded lime mudstone, and 3) limestone conglomerate/breccia dominated by ooid-bearing lime mudstone clasts. The first represents a shallow marine environment on top of an ancient oceanic plateau, while the latter two represent the deeper slope to bottom-of-slope facies of a plateau. The Vendian Baratal limestone provides the oldest example of a reconstructed shallow marine carbonate buildup complex developed on a plateau/seamount in a mid-ocean.
| Original language | English |
|---|---|
| Pages (from-to) | 422-428 |
| Number of pages | 7 |
| Journal | Proceedings of the Japan Academy Series B: Physical and Biological Sciences |
| Volume | 80 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Nov 2004 |
| Externally published | Yes |
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Keywords
- Altai
- Carbonate buildup
- Seamount
- Siberia
- Vendian
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- General
- Mathematics(all)
Cite this
The oldest mid-oceanic carbonate buildup complex : Setting and lithofacies of the Vendian (Late Neoproterozoic) Baratal limestone in the Gorny Altai Mountains, Siberia. / Uchio, Yuko; Isozaki, Yukio; Ota, Tsutomu; Utsunomiya, Atsushi; Buslov, Mikhail M.; Maruyama, Shigenori.
In: Proceedings of the Japan Academy Series B: Physical and Biological Sciences, Vol. 80, No. 9, 11.2004, p. 422-428.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The oldest mid-oceanic carbonate buildup complex
T2 - Setting and lithofacies of the Vendian (Late Neoproterozoic) Baratal limestone in the Gorny Altai Mountains, Siberia
AU - Uchio, Yuko
AU - Isozaki, Yukio
AU - Ota, Tsutomu
AU - Utsunomiya, Atsushi
AU - Buslov, Mikhail M.
AU - Maruyama, Shigenori
PY - 2004/11
Y1 - 2004/11
N2 - The Baratal limestone in the Gorny Altai Mountains, southern Siberia, occurs as large allochthonous blocks within a Cambrian accretionary complex that developed around the Siberia craton. Before the final accretion to Siberia in the Cambrian, the terrigenous clastic-free Baratal limestone was deposited directly upon a basaltic basement with a geochemical signature identical to that of modern oceanic plateau. The Baratal limestone with 598±25 Ma (Early Vendian) Pb-Pb isochron age consists of three distinct facies; 1) massive lime mudstone with ooids and stromatolites, 2) bedded lime mudstone, and 3) limestone conglomerate/breccia dominated by ooid-bearing lime mudstone clasts. The first represents a shallow marine environment on top of an ancient oceanic plateau, while the latter two represent the deeper slope to bottom-of-slope facies of a plateau. The Vendian Baratal limestone provides the oldest example of a reconstructed shallow marine carbonate buildup complex developed on a plateau/seamount in a mid-ocean.
AB - The Baratal limestone in the Gorny Altai Mountains, southern Siberia, occurs as large allochthonous blocks within a Cambrian accretionary complex that developed around the Siberia craton. Before the final accretion to Siberia in the Cambrian, the terrigenous clastic-free Baratal limestone was deposited directly upon a basaltic basement with a geochemical signature identical to that of modern oceanic plateau. The Baratal limestone with 598±25 Ma (Early Vendian) Pb-Pb isochron age consists of three distinct facies; 1) massive lime mudstone with ooids and stromatolites, 2) bedded lime mudstone, and 3) limestone conglomerate/breccia dominated by ooid-bearing lime mudstone clasts. The first represents a shallow marine environment on top of an ancient oceanic plateau, while the latter two represent the deeper slope to bottom-of-slope facies of a plateau. The Vendian Baratal limestone provides the oldest example of a reconstructed shallow marine carbonate buildup complex developed on a plateau/seamount in a mid-ocean.
KW - Altai
KW - Carbonate buildup
KW - Seamount
KW - Siberia
KW - Vendian
UR - http://www.scopus.com/inward/record.url?scp=14644442935&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=14644442935&partnerID=8YFLogxK
U2 - 10.2183/pjab.80.422
DO - 10.2183/pjab.80.422
M3 - Article
AN - SCOPUS:14644442935
VL - 80
SP - 422
EP - 428
JO - Proceedings of the Japan Academy Series B: Physical and Biological Sciences
JF - Proceedings of the Japan Academy Series B: Physical and Biological Sciences
SN - 0386-2208
IS - 9
ER -