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Now showing items 1-20 of 143
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(2002)A method for conodont identification in thin and polished sections based on morphological and histological features is discussed. The diagnostic key and examples from the Lower Carboniferous of the Subpolar Ural Mountains ...
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(2004)An unusual new palaeoniscoid, Senekichthys hirundo gen. et sp. nov., is described from the Lower Carboniferous of the Tuva Republic (Southwestern Siberia) of Russia. In the shape of its anal and caudal fins this new taxon ...
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(2002)The type collections of bryozoans described by M.I. Schulga-Nesterenko and N.A. Shishova from the stratotype sections of the Gzhelian Stage of the Upper Carboniferous are reviewed. The taxonomic composition of these fossils ...
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(2003)Positive shifts in global seawater δ13 CDIC are related to changes in the ratio of organic relative to inorganic carbon burial in oceanic basins, whereas factors such as climatic cooling and the accumulation of polar ice ...
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(2002)The recently proposed subclass Euomphalomorpha Bandel and Fryda, 1998 was primarily based on an openly coiled, planispiral initial whorl. Here, the protoconch of Carboniferous euomphalids is described and figured in detail ...
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(2000)The Middle-Late Carboniferous events in sedimentation, tectonics, magmatism, and ore formation are correlated using paleotectonic reconstructions for the convergence zone between the Alai and Kyrgyz continents. The ...
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(2006)It has long been recognized that the trend of marine diversity from the Carboniferous to the Triassic includes an approximately 100-myr-long stable biodiversity stage ranging from the Late Carboniferous to the late Middle ...
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(2000)The phylogeny and taxonomy of a new tribe of the Productidae, the Reticulatiini Lazarev, trib. nov., is examined using meronomic analysis. New morphological features of these productids are described. Problems of productid ...
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(2006)The calcium-isotope composition (?44/42Ca) was analyzed in modern, Cretaceous and Carboniferous marine skeletal carbonates as well as in bioclasts, non-skeletal components, and diagenetic cements of Cretaceous and Carboniferous ...
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(2002)Theoretical models predict a marked increase in atmospheric O2 to ~35% during the Permo-Carboniferous (~300 Ma) occurring against a low (~0.03%) CO2 level. An upper O2 value of 35%, however, remains disputed because ignition ...
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(2006)Carboniferous adakite-high-Mg andesite-Nb-enriched arc basalt and basaltic andesite (NEB) suites occur in the Northern Tianshan area (Xinjiang), many are associated with copper (gold) deposits (e. g., Dabate, Axi, Tuwu-Yandong, ...
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(2004)This article considers the Carboniferous and Permian stratigrapy of the Karajilga River basin on the northern slope of the Pshart Ridge within the South Pshart tectonic block. The most complete Carboniferous-Permian section ...
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(2004)The paper presents data on the distribution of rains during the formation of Carboniferous coal-bearing rocks in the Lvov–Volyn Basin located at the southwestern margin of the East European Platform. They left numerous ...
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(1996)The analysis of successive conodont assemblages from Carboniferous-Permian boundary sediments of the Aidarlash and Usolka sections revealed that the boundary approaching that in the ammonoid standard is in the transition ...
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(2002)Stable-isotope, petrographic, microprobe, and fluid-inclusion analyses were carried out on calcite and dolomite cements from two cored wells covering the lower, high-porosity stratigraphic interval (Upper Carboniferous-Lower ...
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(2002)Isotopic data of unaltered low-Mg calcite brachiopods from type Bashkirian strata of the Askyn River section (southern Urals, Russia) are correlated with those from the Mid-Carboniferous Boundary Global Stratotype Section ...
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(2006)Based on the geological data the authors collected in northern Xinjiang in the last two decades, together with a comprehensive analysis on the existent geological and geophysical data, they discussed the present-day crustal ...
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(2001)The family Loeblichiidae Cummings already emended by Rauser-Chernousova et al. (1996), is revised and subdivided into three subfamilies: Loeblichiinae Cummings emend., Spinoendothyrinae subfam. nov., Dainellinae subfam. ...
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(2001)Multi-stage development of carbonate buildups has been recognised in the Bol'shaya Nadota Carbonate Complex, in the vicinity of the town of Inta (Subpolar Urals). The growth of typical stromatoporoid-coral bioherms, ...
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(1987)Oriented kimberlite specimens (total of 200 pieces) were collected on the benches and in the bed of an exploratory opencut that exposed bedrock to a depth of 7 to 8 m at about the center of the pipe. The porphyric kimberlite ...
Now showing items 1-20 of 143