Permian Triassic Boundary
Convergent continental margin volcanic source for ash beds at the Permian Triassic boundary, South China : constraints from trace elements and Hf isotopes
... the Permian-Triassic boundary (Yin et ...uppermost Permian succession (Beds 20-24) comprises bioclastic limestone of the Changxing Formation, whereas the lowest Triassic strata consist ...
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Enhanced flux of extraterrestrial 3He across the Permian–Triassic boundary
... Ma Permian – Triassic boundary (PTB) represents the most severe mass extinction event of the Phanerozoic, with the disappearance of ~ 80% of marine invertebrate ...the Permian, concurrent with ...
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Comment on “Quantitative biochronology of the Permian–Triassic boundary in South China based on conodont unitary associations” by Brosse et al. (2016)
... the Permian – Triassic transition and to redefine the chosen level of the Permian – Triassic boundary (PTB), because of a perceived weakness of conventional interval ...
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Precise age for the Permian–Triassic boundary in South China from high-precision U-Pb geochronology and Bayesian age–depth modeling
... formable boundary between the Changhsing Formation and the Yinkeng Formation than the FO of ...timate Permian conodont UAZ in Meishan (Brosse et ...last Permian UAZ2 projects correctly above UAZ1 ...
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SHRIMP zircon U–Pb ages from coal beds across the Permian–Triassic boundary, eastern Yunnan, southwestern China
... 27 of the Meishan section which is considered as the P/ T boundary bed, and the beds from lower 66f to upper 68 (including 68a and 68c) are de fi ned as the boundary interval. The clay beds in 68a and 68c ...
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The carbon biogeochemical cycle across the Permian - Triassic boundary strata and its implications: isotope record from the Changhsingian Stage at Meishan, south China
... radiation on the terrestrial flora (V ISSCHER & al. 2001 in B ERNER 2002), and lowering the O 2 amounts in the atmosphere (D ICKENS 2001); (iii) carbon dioxide emana- tions from the Siberian Traps postulated to have ...
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Stratigraphic significance of carbon isotope variations in the shallow-marine Seis/Siusi Permian Triassic boundary
... the Permian this location was situated on an inner carbonate ramp (No 1987; Brandner 1988; Newton et ...T boundary sections such as S-China, Iran and Perigondwanan localities (Atu- dorei 1999; Yin et ...
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Palaeomagnetism and magnetostratigraphy of the Permian and Triassic of Spitsbergen : a review of progress and challenges
... The Permian of Svalbard consists of limestones, dolomites and evaporites in the Gipsdalen Group, grading upwards into cherty limestones and silicified shales and siltstones in the Tempelfjorden Group ...the ...
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A review of the Late Permian – Early Triassic conodont record and its significance for the end-Permian mass extinction
... 626 Nicoll, R.S., Metcafle, I., Wang, C., 2002, New species of the conodont genus Hindeodus and conodont 627 biostratigraphy of the Permian–Triassic boundary interval. Journal of Asian Earth Science, ...
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Palaeocopida (Ostracoda) across the Permian–Triassic events: new data from southwestern Taurus (Turkey)
... the Permian–Triassic boundary: Hollinella tingi, Hollinella unispinata and Roundyella? papilliformis Wang, 1978 (Table ...earliest Triassic of the Kemer area ...the ...
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Climate change at the Triassic/Jurassic boundary in the northwestern Tethyan realm, inferred from sections in the Tatra Mountains (Slovakia)
... Both sections reveal a strikingly similar distribu- tion of kaolinite. it appears only in the boundary clay- stones, while underlying strata are free of kaolinite with one exception recognized in the Široký Žľab ...
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The environment of the Permian Glacial sedimentation of Tasmania: with particular reference to the base of the Permian
... Stepb na 1n 1869 tirat re~ortod the occurrence ot the tilllt 1n the ~nyord area but 1ta a e aa not coDti ad until 1907 when DaY1d attor detollea etudy, correlated it 1tb the tillite at B[r] ...
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GEOCHRONOLOGIC AND ISOTOPIC INVESTIGATION OF THE KOIPATO FORMATION, NORTHWESTERN GREAT BASIN, NEVADA: IMPLICATIONS FOR LATE PERMIAN-EARLY TRIASSIC TECTONICS ALONG THE WESTERN U.S. CORDILLERA
... siliceous and argillaceous sediments of probable Triassic age, based on fossil fragments that he found in the Humboldt Range (MacMillan, 1972). King (1878) also noted that the Koipato Formation is conformably ...
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Permian Aquatic Reptiles
... A series of repeated and predictable sclerotome modifications occur in amniote tetrapods after they return to an aquatic lifestyle. Before listing these modifications, it is important to note that several aquatic ...
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Early Permian Pangea 'B' to Late Permian Pangea 'A"
... veals that the Adriatic foreland of Istria, Garga- no, Apulia andIblei has not yet been a¡ectedby Cenozoic Apenninic compression, which caused extensive di¡erential rotations of thrust sheets in the Apennines [11]. The ...
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Hf- and O-isotope data from detrital and granitoid zircons reveal characteristics of the Permian–Triassic magmatic belt along the Antarctic sector of Gondwana
... the Permian detrital zircons from the Transantarctic Mountains are younger than those of the analyzed granitoids, and the Upper Triassic detrital zircons have only a distant known potential zircon source in ...
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A new high precision 40Ar/39Ar age for the Rochechouart impact structure : at least 5 Ma older than the Triassic–Jurassic boundary
... the Triassic– Jurassic boundary, at which time ~30% of global genera became ...the Triassic–Jurassic boundary at high precision, we have re-examined the structure’s age using multicollector ...
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6 th International Triassic Field Workshop (Pan-European Correlation of the Triassic) Triassic of Southwest Germany. 1 st Circular
... Germanic Triassic for an international audience with field trips to representative ...international Triassic workshops held in England (2004), Central Germany (2005), Eastern France (2006), Western Poland ...
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Intercalibration of Boreal and Tethyan timescales: the magneto biostratigraphy of the Middle Triassic and the latest Early Triassic from Spitsbergen, Arctic Norway
... directed Triassic magnetisation ...interpreted Triassic reverse and normal polarity directions (here referred to as T-type demagnetization behaviour; ...
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Cyclic sedimentation in the Permian system of Tasmania
... 25; thin muddy breaks in upper 3 inches Mudstone dark gray, thin-bedded, calcareous Limestone medium dark gray, slightly muddy, muddy breaks 3, 5 inches above base; numerous brachiopods [r] ...
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