Proposal of Aidaralash as Global Stratotype Section and Point (GSSP) for base of the Permian System

Davydov, Vladimir I.; Glenister, Brian F.; Spinosa, Claude; Ritter, Scott; Черных, В. В.; Wardlaw, Bruce R.; Snyder, W.S.

doi:10.18814/epiiugs/1998/v21i1/003

Cited by 78 publications

(36 citation statements)

References 8 publications

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“…inglorius (Bensh) and Schwagerina versabile (Bensh) occur. These forms in Darvaz and the S. Urals appear in the lower Asselian (Davydov, , ; Davydov et al ., ; Krainer and Davydov, ).…”

Section: Fusulinid and Conodont Biostratigraphy Of The Cisuralian In mentioning

confidence: 99%

Fusulinid biostratigraphy of the Lower Permian Zweikofel Formation (Rattendorf Group; Carnic Alps, Austria) and Lower Permian Tethyan chronostratigraphy

2012

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The Zweikofel Formation of the Rattendorf Group in the Carnic Alps (Austria) is 95–102 m thick and consists of a cyclic succession of thin‐ to thick‐bedded fossiliferous limestone and intercalated thin intervals of siliciclastic sediment. The siliciclastic intervals were deposited in a shallow marine nearshore environment. The variety of carbonate facies indicates deposition in a shallow neritic, normal‐saline, low‐ to high‐energy environment. The Zweikofel Formation is characterized by a paracyclic vertical arrangement of facies and represents sedimentary sequences that are not well understood elsewhere in the Tethys. Fusulinids and conodonts from the upper Grenzland and Zweikofel formations in the Carnic Alps clearly suggest that what has been called ‘Sakmarian’ in the Tethys includes both the Sakmarian and Artinskian stages of the Global Time scale. Fusulinids from the lower part of the Zweikofel Formation at Zweikofel closely resemble those of the Grenzland Formation and approximately correlate with the upper part of the Sakmarian and lower part of the Artinskian of the Global Time scale. The upper part of the Zweikofel Formation correlates approximately with the lower‐middle (?) parts of the Artinskian Stage of the Global Time scale. A new regional Hermagorian Stage of the Tethyan scale is proposed between the Asselian and Yakhtashian. The lower boundary of the Hermagorian Stage is proposed to be located at the base of bed 81 in the 1015 section of Darvaz (Tadzhikistan). The boundary between the Hermagorian and Yakhtashian stages is placed at the base of bed 73 in the Zweikofel section at Zweikofel, Carnic Alps. In the Darvaz region, Tadzhikistan, the type area for the Yakhtashian Stage, this boundary has never been precisely defined. The entire fusulinid assemblage of the upper part of the Grenzland and Zweikofel formations reported herein includes 62 species of 18 genera, of which one subgenus and 12 species and subspecies are new. Copyright © 2012 John Wiley & Sons, Ltd.

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“…inglorius (Bensh) and Schwagerina versabile (Bensh) occur. These forms in Darvaz and the S. Urals appear in the lower Asselian (Davydov, , ; Davydov et al ., ; Krainer and Davydov, ).…”

Section: Fusulinid and Conodont Biostratigraphy Of The Cisuralian In mentioning

confidence: 99%

Fusulinid biostratigraphy of the Lower Permian Zweikofel Formation (Rattendorf Group; Carnic Alps, Austria) and Lower Permian Tethyan chronostratigraphy

2012

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“…The Pennsylvanian–Permian boundary discussed herein is based on the Global Stratotype Section and Point (GSSP) for the base of the Permian System, which has been placed in Kazakhstan (Davydov et al. , 1998).…”

Section: Geological Settingmentioning

confidence: 99%

“…The Pennsylvanian-Permian boundary discussed herein is based on the Global Stratotype Section and Point (GSSP) for the base of the Permian System, which has been placed in Kazakhstan (Davydov et al, 1998). Conodont and fusulinid studies have correlated the Pennsylvanian-Permian boundary in Kazakhstan with stratigraphic sections throughout North America (Ross, 1963;Ritter, 1995;Wahlman & King, 2002).…”

Section: Stratigraphymentioning

confidence: 99%

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Imprint of the Late Palaeozoic Ice Age on stratigraphic and carbon isotopic patterns in marine carbonates of the Orogrande Basin, New Mexico, USA

Koch¹,

Frank²

2011

Sedimentology

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The Permian records one of the most extreme climate transitions of the Phanerozoic, yet the climatic and environmental dynamics of this interval and their effects on neritic carbonate systems remain poorly constrained. New stratigraphic and carbon isotope records from uppermost Pennsylvanian to Lower Permian strata of the Orogrande Basin in south‐central New Mexico, USA, provide fresh insights into the response of palaeotropical carbonate systems to the growth and demise of ice sheets on Gondwana. The earliest Permian acme of glaciation is recorded in the Orogrande Basin as a series of subaerial exposure surfaces marked by highly variable δ13C values that tend toward values as low as −6‰. These stratigraphic and isotopic patterns are interpreted to reflect the retreat of the sea from the basin during glacial expansion. Younger (Lower Sakmarian to Kungurian) strata, deposited during the long decline of the Late Paleozoic Ice Age, are characterized overall by higher and more uniform δ13C values (+2 to +5‰) and show no evidence of long‐term subaerial exposure. However, these strata record two short‐lived excursions toward more negative δ13C values. These excursions occur through intervals that record shifts toward shallower and more restricted conditions in the Orogrande Basin. The timing of these shifts corresponds to two periods of glacial expansion across eastern Australia during Late Sakmarian to Early Artinskian and Kungurian time. These relationships suggest that pulses of glacial expansion in eastern Gondwana were of sufficient magnitude to have caused relative sea‐level fall, and possibly environmental change, in the Orogrande Basin. The results from this study suggest that marine chemistry, depositional environments and sea‐level in the Orogrande Basin were profoundly influenced by epochs of Gondwanan glaciation. These inferences help improve the understanding of how palaeotropical carbonate systems responded to the effects of cryospheric changes during the acme and waning stages of the Late Palaeozoic Ice Age.

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“…В цілому об'єм верхнього карбону, в порівнянні з останньою схемою 1993 р., збільшився на миронівський регіоярус. З метою узгодження положення межі карбону і пермі в місцевих схемах з міжнародно визнаною нижньою границею пермської системи [Davydov et al, 1998] в новому варіанті стратиграфічної схеми верхню границю карбону перенесено на рівень верхньої границі миронівського регіоярусу (у підошву вапняку Q 8 ) на основі палінологічних [Иносова и др., 1976;Dunn, 2001] і палеомагнітних даних із донецьких відкладів та фауністичних даних із одновікових відкладів суміжної з Донбасом Тормосинської улоговини [Давыдов, 1986; Молотовский, Храмов, 1984]. Ці дані свідчать, що верхній зоні гжельського ярусу Ultradaixina bosbytauensis-Globifusulina robusta в Донбасі відповідає інтервал від вапнякa Р 5 0 до карбонатного горизонту Q 8 [Давыдов, 1986, 1992], який складає об'єм миронівського регіоярусу.…”

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Main Directions and Results of Modernization of Carboniferous and Permian Stratigraphic Chards of Ukraine (1993-2014)

Poletaev¹,

Boyarina²,

Vdovenko³

et al. 2016

Tekton. stratigr.

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Proposal of Aidaralash as Global Stratotype Section and Point (GSSP) for base of the Permian System

Cited by 78 publications

References 8 publications

Fusulinid biostratigraphy of the Lower Permian Zweikofel Formation (Rattendorf Group; Carnic Alps, Austria) and Lower Permian Tethyan chronostratigraphy

Fusulinid biostratigraphy of the Lower Permian Zweikofel Formation (Rattendorf Group; Carnic Alps, Austria) and Lower Permian Tethyan chronostratigraphy

Imprint of the Late Palaeozoic Ice Age on stratigraphic and carbon isotopic patterns in marine carbonates of the Orogrande Basin, New Mexico, USA

Main Directions and Results of Modernization of Carboniferous and Permian Stratigraphic Chards of Ukraine (1993-2014)

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