The Carboniferous-Permian boundary and ammonoids from the Aidaralash section, southern Urals

1995 ◽  
Vol 69 (2) ◽  
pp. 288-301 ◽  
Author(s):  
M. F. Bogoslovskaya ◽  
T. B. Leonova ◽  
A. A. Shkolin
Keyword(s):  
Southern Urals ◽  
Late Carboniferous ◽  
Lower Permian ◽  
Profound Change ◽  
Stratigraphic Section ◽  
Northern Kazakhstan ◽  
Permian Ammonoid

The stratigraphic section at Aidaralash Creek, northern Kazakhstan, provides a complete and well-developed succession of strata across the Carboniferous–Permian boundary. This section, containing abundant and well-preserved ammonoid, fusulinacean, and conodont faunas, can serve well as the Carboniferous–Permian boundary stratotype. A profound change in ammonoid faunas, which occurs at the Orenburgian–Asselian boundary and which has been recognized by previous workers (e.g., Ruzhencev, 1950, 1951, 1952; Bogoslovskaya and Popov, 1986a, 1986b; Furnish, 1973; Glenister and Furnish, 1981), occurs in the Aidaralash Creek section, at the boundary between beds 19 and 20, and serves to mark the Carboniferous–Permian boundary. Additionally, Lower Permian strata at Aidaralash Creek mark the first appearance of widespread Permian ammonoid taxa, including representatives of Svetlanoceras, Juresanites, Prostacheoceras, Tabantalites, and Kargalites, that are preceded by the extinction of characteristic Late Carboniferous genera such as Prouddenites, Uddenites, Shumardites, Vidrioceras, Schistoceras, and Subkargalites.

Late Carboniferous lycopsids of the Karantrav locality (the Southern Urals)

2017 ◽  
Vol 72 (1) ◽  
pp. 28-36
Author(s):  
O. A. Orlova ◽  
A. V. Tevelev ◽  
D. A. Mamontov ◽  
E. V. Anikeeva
Keyword(s):  
Southern Urals ◽  
Late Carboniferous ◽  
The Southern Urals

scholarly journals Permian basinal ammonoid sequence in Nanpanjiang area of South China—possible overlap between basinal Guadalupian and platform-based Lopingian

2017 ◽  
Vol 91 (S74) ◽  
pp. 1-95 ◽  
Author(s):  
Zuren Zhou
Keyword(s):  
New Species ◽  
North America ◽  
South China ◽  
South Urals ◽  
Lower Permian ◽  
New Genera ◽  
West Texas ◽  
Permian Ammonoid

AbstractThe Permian pandemic ammonoids in Nanpanjiang Basin (41 genera, including two new generaGlenisterocerasandFusicrimites, and 56 species, including 21 new species) are systematically described and/or discussed. New species described in this paper areAgathiceras sequaxiliraen. sp.,Akmilleria parahuecoensisn. sp.,Aristoceras liuzhaiensen. sp.,Bamyaniceras nandanensen. sp.,Bamyaniceras yangchangensen. sp.,Bransonoceras longyinensen. sp.,Difuntites furnishin. sp.,Emilites globosusn. sp.,Eoaraxoceras spinosain. sp.,Eumedlicottia kabiensisn. sp.,Fusicrimites nanpanjiangensisn. gen. n. sp.,Glenisteroceras sidazhaiensen. gen. n. sp.,Metaperrinites shaiwaensisn. sp.,Miklukhoceras guizhouensen. sp.,Neocrimites guizhouensisn. sp.,Neopronorites leonovaen. sp.,Popanoceras ziyunensen. sp.,Properrinites gigantusn. sp.,Stacheoceras shaiwaensen. sp.,Svetlanoceras uraloceraformisn. sp., andSynartinskia meyaoensen. sp. A relatively complete Permian basinal ammonoid sequence with six zones has been newly recognized in South China, in ascending order,Properrinites gigantus-Svetlanoceras serpentinum,Svetlanoceras uraloceraformis-Prothalassoceras biforme,Popanoceras kueichowense-Medlicottia orbignyanus,Metaperrinites shaiwaensis-Popanoceras ziyunense,Waagenocerassp.-Propinacoceras beyrichi, andEoaraxoceras spinosai-Difuntites furnishi. The upper three zones are close to being duplicated from the Permian of Las Delicias, Coahuila, Mexico and west Texas, USA; while the lower three zones compare well to those of the Lower Permian in South Urals. TheEoaraxoceras-Difuntitesassemblage, as an index fauna of the upper Capitanian in Coahuila, has been found from the Claystone (3rd) Member of the Shaiwa Formation with the commonly accepted Lopingian stratigraphic age. The updated Permian ammonoid biostratigraphy in South China reveals a possible overlap between the basinal Guadalupian from North America and the platform-based Lopingian from South China.

Multidisciplinary study of the Mechetlino Quarry section (Southern Urals, Russia) — The GSSP candidate for the base of the Kungurian Stage (Lower Permian)

Palaeoworld ◽  
2020 ◽  
Vol 29 (2) ◽  
pp. 325-352 ◽  
Author(s):  
Valery V. Chernykh ◽  
Galina V. Kotlyar ◽  
Boris I. Chuvashov ◽  
Ruslan V. Kutygin ◽  
Tatiana V. Filimonova ◽  
...  
Keyword(s):  
Southern Urals ◽  
Lower Permian ◽  
Multidisciplinary Study ◽  
Kungurian Stage

The tectonic evolution of the Bogda region from Late Carboniferous to Triassic time: evidence from detrital zircon U–Pb geochronology and sandstone petrography

2017 ◽  
Vol 155 (5) ◽  
pp. 1063-1088 ◽  
Author(s):  
JIALIN WANG ◽  
CHAODONG WU ◽  
ZHUANG LI ◽  
WEN ZHU ◽  
TIANQI ZHOU ◽  
...  
Keyword(s):  
Detrital Zircon ◽  
Tectonic Evolution ◽  
Age Distribution ◽  
Upper Triassic ◽  
Detrital Zircons ◽  
Late Carboniferous ◽  
Late Triassic ◽  
Lower Permian ◽  
Geological Evidence ◽  
Upper Carboniferous

AbstractField-based mapping, sandstone petrology, palaeocurrent measurements and zircon cathodoluminescence images, as well as detrital zircon U–Pb geochronology were integrated to investigate the provenance of the Upper Carboniferous – Upper Triassic sedimentary rocks from the northern Bogda Mountains, and further to constrain their tectonic evolution. Variations in sandstone composition suggest that the Upper Carboniferous – Lower Triassic sediments displayed less sedimentary recycling than the Middle–Upper Triassic sediments. U–Pb isotopic dating using the LA-ICP-MS method on zircons from 12 sandstones exhibited similar zircon U–Pb age distribution patterns with major age groups at 360–320 Ma and 320–300 Ma, and with some grains giving ages of > 541 Ma, 541–360 Ma, 300–250 Ma and 250–200 Ma. Coupled with the compiled palaeocurrent data, the predominant sources were the Late Carboniferous volcanic rocks of the North Tianshan and Palaeozoic magmatic rocks of the Yili–Central Tianshan. There was also input from the Bogda Mountains in Middle–Late Triassic time. The comprehensive geological evidence indicates that the Upper Carboniferous – Lower Permian strata were probably deposited in an extensional context which was related to a rift or post-collision rather than arc-related setting. Conspicuously, the large range of U–Pb ages of the detrital zircons, increased sedimentary lithic fragments, fluvial deposits and contemporaneous Triassic zircon ages argue for a Middle–Late Triassic orogenic movement, which was considered to be the initial uplift of the Bogda Mountains.

First basal synapsids (“pelycosaurs”) from the Upper Permian-?Lower Triassic of Uruguay, South America

2003 ◽  
Vol 77 (2) ◽  
pp. 389-392 ◽  
Author(s):  
Graciela Piñeiro ◽  
Mariano Verde ◽  
Martín Ubilla ◽  
Jorge Ferigolo
Keyword(s):  
South Africa ◽  
North America ◽  
South America ◽  
Lower Triassic ◽  
Late Carboniferous ◽  
Upper Permian ◽  
Lower Permian ◽  
Late Permian ◽  
Early Permian ◽  
Continental Deposits

In their monograph Review of the Pelycosauria, Romer and Price (1940), proposed that the earliest synapsids (“pelycosaurs”) were cosmopolitan, despite the observation that amniotes appeared to be restricted to the paleotropics during the Late Carboniferous and Early Permian (290–282 Ma). Romer and Price (1940) accounted for the scarcity of terrestrial tetrapods, including “pelycosaurs,” in Lower Permian beds elsewhere to the absence of coeval continental deposits beyond North America and Europe. Indeed, most workers recognized a geographical and temporal gap between Permo-Carboniferous “pelycosaurs” and therapsid synapsids. Recent research has confirmed that varanopid and caseid “pelycosaurs” were components of therapsid-dominated Late Permian faunas preserved in Russia and South-Africa (Tatarinov and Eremina, 1975; Reisz, 1986; Reisz et al., 1998; Reisz and Berman, 2001).

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