Late Permian limestones and the Permain-Triassic boundary:new biostratigraphic, palaeobiogeographical and geochemical data in Caucasus and eastern Europe

Thery, J.-M.; Vachard, Daniel; Dransart, Estelle

doi:10.1144/gsl.sp.2007.275.01.16

Cited by 14 publications

(9 citation statements)

References 41 publications

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“…4). This fact 198 seems to be common in the late Changhsingian (Gaillot, 2006 Greece, South China (Flügel and Reinhardt, 1989; Weidlich, 2002; Weidlich et al, 231 2003; this study), and NW Caucasus (Théry et al, 2007) where the sphinctozoan and inozoan 232 bioconstructions are especially well-known (Rigby et al, 1989 a, b;Fan et al, 1990 type is common but diplospherine stages exist (e.g., Vachard, 1980, pl. 25, fig.…”

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New latest Permian foraminifers from Laren (Guangxi Province, South China): Palaeobiogeographic implications

Gaillot¹,

Vachard²,

Galfetti³

et al. 2009

Geobios

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Geobios Gaillot et al. 1 NEW LATEST PERMIAN FORAMINIFERS FROM LAREN (GUANGXI 1PROVINCE Introduction 83Traditionally, Late Permian (Lopingian) microfossils are considered as tenacious 84 survivors, between two severe biotic crises: end-Middle Permian and, then, the worst, end-85Permian crisis, where the life has almost disappered from the earth. According to Loeblich 86 and Tappan (1987), only 15 fusuline genera in the super-families Schubertelloidea and 87Staffelloidea persisted within Lopingian times, between the two crises. Additional 23 to 25 88 non-fusuline genera (i.e., Biseriamminoidea, Endothyroidea, Tetrataxidoidea, 89 Palaeotextulariioidea, and Lasiodiscoidea) are known from Wuchiapingian to Changhsingian 90 rocks, respectively. In this time interval, at least 35 genera of lagenids are also recognised. 91Among them, e.g., Geinitzina, Pachyphloia, Nodosinelloides, Protonodosaria and Robuloides 92 are especially widespread. Dasycladals are very few, less than 10 genera (see compilation in 93 Granier and Grgasovic, 2000). Only bioaccumulations of Permocalculus or Gymnocodium 94 can be emphasized (e.g., Théry et al., 2007). 95Recently, the knowledge of the Late Permian foraminifers and calcareous algae was 96 improved by different works concerning the Khuff Formation (Late Middle Permian to Early 97 Triassic) in the Middle East (Vaslet et al., 2005;Vachard et al., 2005; Insalaco et al., 2006; 98 Gaillot, 2006;Vachard et al., 2006; Gaillot and Vachard, submitted). Many new taxa are 99 illustrated and/or described within these contributions. 100 Geobios Gaillot et al. 4The Permian-Triassic Khuff Formation, our initial reference, has been defined by Steineke 101 et al. (1958) (Vaslet et al. 2005;Vachard et al. 2005;Gaillot, 2006). 107The Khuff depositional system developed on the margin of the Neo-Tethyan Ocean, 108 separating the Gondwana supercontinent from the Gondwanan terranes (Cimmerian 109 megablock). The general palaeogeographic context of this system was a marginal marine 110 shelf setting with an inner platform that was very flat, ramp-like, but with local depressions 111 (Sharland et al. 2001; Insalaco et al. 2006). 112Comprehensive investigations recently undertaken in the Nanpanjiang Basin (South China) 113 revealed a rich and new Late Permian foraminiferal-algal association. The discovery, 114 description and revision of some new and/or stratigraphically and palaeogeographically 115 significant taxa are related, identifying the main markers for the latest Permian in South 116China. Among the foraminifers, the group of Biseriamminoidea was the most important and 117 highly diversified, because the disappearance of the neoschwagerinid, verbeekinid and 118 schwagerinid fusulines at the end-Capitanian, 119In South China as well as elsewhere in the Tethys, and especially in western Neo-Tethys, 120 the shallow depositional settings of the Lopingian (including Wuchiapingian and 121 Changhsingian) are generally characterized by abundant Globivalvulinidae (family including 122 Paradag...

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confidence: 72%

“…Dasycladals are very few, less than 10 genera (see compilation in 93 Granier and Grgasovic, 2000). Only bioaccumulations of Permocalculus or Gymnocodium 94 can be emphasized (e.g., Théry et al, 2007). 95…”

Section: Introduction 83mentioning

confidence: 99%

New latest Permian foraminifers from Laren (Guangxi Province, South China): Palaeobiogeographic implications

Gaillot¹,

Vachard²,

Galfetti³

et al. 2009

Geobios

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“…These latter have been generally correlated with southern Crimea and Alborz Mountains as part of Cimmerian blocks (e.g., Wignall and Twichett, 2002;Théry et al, 2007). Bükk Mountains and Greece are poorly constrained but seem to belong to one or two independent microplates.…”

Section: Discussionmentioning

confidence: 99%

“…As indicated by Théry et al (2007), both Palaeo-and Neo-Tethyan branches during the Middle-Late Permian belong to the same tropical/subtropical climatic zone, and the foraminiferal and algal assemblages do not permit to individualize each branch accurately. Nevertheless, due to some biomarkers, NW Iran, Armenia, Zagros and Abadeh appear geographically related, whereas they appear not connected with the Alborz (Figure 21).…”

Section: Discussionmentioning

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Middle-Late Permian (Murgabian-Djulfian) foraminifers of the northern Maku area (western Azerbaijan, Iran

Nejad

Vachard

Siabeghodsy³

et al. 2015

Palaeontologia Electronica

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The Changhsingian foraminiferal fauna of a Neotethyan seamount: the Gyanyima Limestone along the Yarlung‐Zangbo Suture in southern Tibet, China

et al. 2010

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The Gyanyima Limestone is one of the isolated carbonate build-ups that have a probable Neotethyan seamount origin, distributed along the Yarlung-Zangbo Suture in southern Tibet. The limestone yields a highly diversified foraminiferal fauna consisting of nine fusuline and 37 taxa of non-fusuline foraminifers. This foraminiferal fauna is dominated by Reichelina pulchra, Colaniella parva and the characteristic boultoniid genus Dilatofusulina. We propose a new foraminiferal zone, the Reichelina pulchra-Colaniella parva-Dilatofusulina orthogonios Zone that represents the last prosperous stage of foraminifers just before the end-Permian mass extinction. This zone can be correlated broadly with the Palaeofusulina sinensis Zone in the Eastern Tethys based on advanced features observed in the major elements of the fauna. The composition of the fauna suggests that during the late Changhsingian, the Gyanyima Limestone occupied a palaeogeographic position at lower latitudes in the Neotethys. The fauna was largely influenced by the warm-water equatoro-tropical Palaeotethys.

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Late Permian limestones and the Permain-Triassic boundary:new biostratigraphic, palaeobiogeographical and geochemical data in Caucasus and eastern Europe

Cited by 14 publications

References 41 publications

New latest Permian foraminifers from Laren (Guangxi Province, South China): Palaeobiogeographic implications

New latest Permian foraminifers from Laren (Guangxi Province, South China): Palaeobiogeographic implications

Middle-Late Permian (Murgabian-Djulfian) foraminifers of the northern Maku area (western Azerbaijan, Iran

The Changhsingian foraminiferal fauna of a Neotethyan seamount: the Gyanyima Limestone along the Yarlung‐Zangbo Suture in southern Tibet, China

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