Results 211 to 220 of about 1,509,261 (248)
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Radiosensitivity of subterranean bacteria in the Hungarian upper permian siltstone formation
Journal of Environmental Radioactivity, 2002The main purpose of this work was to study the radioresistance of subterranean aerobic and anaerobic isolates from the Hungarian Upper Permian Siltstone (Aleurolite) Formation, in order to assess the safety of potential sites of future underground repositories for nuclear waste. A total of 93 isolates were studied.
Gyöngyi, Farkas, L G, Gazsó, G, Diósi
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Plesiosaur ancestors from the upper permian of Madagascar
Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1981Abstract Numerus well preserved fossils from the Upper Permian of Madagascar are structurally intermediate between primitive diapsid reptiles and nothosaurs and plesiosaurs. Claudiosaurus germaini (gen.nov., sp.nov.) is similar in its basic anatomy to eosuchian reptiles such as Thadeosaurus colcanapi (gen.nov., sp.nov.), but the ...
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AAPG Bulletin, 1986
ABSTRACT Outcrops of Guadalupian sedimentary rocks in the Permian basin of west Texas and southeastern New Mexico are a classic example of the facies relationships that span a carbonate shelf. In the subsurface, these rocks form classic hydrocarbon-facies traps.
Robert F. Ward +2 more
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ABSTRACT Outcrops of Guadalupian sedimentary rocks in the Permian basin of west Texas and southeastern New Mexico are a classic example of the facies relationships that span a carbonate shelf. In the subsurface, these rocks form classic hydrocarbon-facies traps.
Robert F. Ward +2 more
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Brachiopod assemblages from the Upper Permian and Permian–Triassic boundary beds, South China
Canadian Journal of Earth Sciences, 1980Uppermost Permian (Changhsingian) brachiopods are abundant and diverse in South China; thus far, 60 genera and 130 species have been described from the Changhsing Formation. Two distinctive brachiopod faunas can readily be identified from a single Changhsingian zone, the Peltichia zigzag–Paryphella sulcatifera Assemblage Zone.
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Sandstones and Channels in Upper Pennsylvanian and Lower Permian in Kansas
AAPG Bulletin, 1956ABSTRACT During recent field work in Kansas, many channel sandstones were discovered in the upper Pennsylvanian and lower Permian rocks. The new channels originated in the Willard, Pierson Point, Langdon, Pony Creek, West Branch, and Hamlin shales and the Caneyville limestone. Some of them are as much as 110 feet deep.
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THE INTERREGIONAL CORRELATION OF THE TATARIAN AND THE PROBLEM OF THE PERMIAN UPPER BOUNDARY
International Geology Review, 1992As the Permian was initially established on the Russian Platform, the sequence of Permian stages with type sections on the platform is traditionally considered as the standard and has served to define the Permian. Consequently, the upper boundary of the Tatarian on the Russian Platform should, by definition, be considered as the upper boundary of the ...
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THE MAGNESIAN LIMESTONE (UPPER PERMIAN) REEF COMPLEX OF NORTHEASTERN ENGLAND
1981ABSTRACT A major linear reef ultimately more than 100 meters high protected the seaward edge of the carbonate shelf of the Upper Permian Middle Magnesian Limestone in northeastern England, and is overlain by an extensive stromatolite biostrome. Rocks of both structures are almost completely dolomitized. The reef is founded on a patchy
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The Permian sequence of Russian Plate as a global standard of the continental Middle-Upper Permian
2014Golubev, Valeriy K. +5 more
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