Possible bipolar global expression of the P3 and P4 glacial events of eastern Australia in the Northern Hemisphere; marine diamictites and glendonites from the Middle to Upper Permian in southern Verkhoyanie, Siberia

Three intervals of glaciomarine diamictites with extensive glendonites in middle to upper Permian sediments were found in the Kobyume River, southern Verkhoyanie, Russia. The successions are biostratigraphically constrained as middle to upper Permian. The middle Permian diamictite horizons extend ov...

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Bibliographic Details
Published in:Geology (Boulder) 2022-08, Vol.50 (8), p.874-879
Main Authors: Davydov, V. I, Budnikov, I. V, Kutygin, R. V, Nurgalieva, N. G, Biakov, A. S, Karasev, E. V, Kilyasov, A. N, Makoshin, V. I
Format: Article
Language:English
Subjects:
ancient ice ages
Asia
C-13/C-12
carbon
chemical composition
clastic rocks
Commonwealth of Independent States
diamictite
Geochemistry
Geology
glacial environment
glaciomarine environment
glendonite
isotope ratios
isotopes
Kobyume Formation
Kobyume River
lithostratigraphy
Lugovaya Formation
marine environment
Northern Hemisphere
O-18/O-16
oxygen
paleoclimatology
paleoenvironment
Paleozoic
Permian
Russian Federation
Sediment
sedimentary rocks
Sediments
Siberia
stable isotopes
Stratigraphy
Tiryakh Formation
Verkhoyansk Russian Federation
Yakutia Russian Federation
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Description
Summary:Three intervals of glaciomarine diamictites with extensive glendonites in middle to upper Permian sediments were found in the Kobyume River, southern Verkhoyanie, Russia. The successions are biostratigraphically constrained as middle to upper Permian. The middle Permian diamictite horizons extend over a large area with a lateral distance of >1000 km. The upper Permian diamictites developed only locally. The diamictites are interpreted as glaciomarine sediments containing ice-rafted debris. Two glacial episodes in Siberia temporally correspond to the P3 (middle Permian) and P4 (late Permian) glacial events of eastern Australia, strongly suggesting a global bipolar climate and well-developed climatic belts during the middle to late Permian.
ISSN:0091-7613
1943-2682
DOI:10.1130/G50165.1