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Now showing items 1-20 of 23
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(2002)Carbon isotope records for inorganic and total organic carbon (TOC) as well as for individual organic biomarkers show two positive excursions in the Late Frasnian with comparable shape and amplitude in δ13C. The positive ...
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(2004)Upper Devonian clastic complexes (the Zilair Formation flysch, Biyagoda mixtite, Koltuban limestone conglomerate, Bugodak volcanogenic-sedimentary sequence) are considered. In the eastern flank of the Southern Urals, the ...
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(2006)Tengiz field is an isolated carbonate buildup in the southeastern Precaspian Basin, containing a succession of shallow-water platforms ranging in age from late Famennian to early Bashkirian. Platform backstepping from ...
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(2004)A model of the global biogeochemical cycles coupled to a energy-balance climate model (the COMBINE model) is used to identify the causes of two large δ13C value excursions across the Frasnian-Famennian (F-F) boundary. We ...
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(2001)The temporal link between mass extinctions and large igneous provinces is well known. Here, we examine this link by focusing on the potential climatic effects of large igneous province eruptions during several extinction ...
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(2006)Occurrences of fossil lungfishes (Dipnoi: Sarcopterygii) in the Famennian Catskill Formation of Pennsylvania are reviewed. A nearly complete dermal skull roof is assigned to a new genus and species, Apatorhynchus opistheretmus. ...
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(2000)Palynomorph distribution in Euramerica and western Gondwana, from the Latest Givetian to the Latest Famennian, may be explained, to some extent, by climatic changes. Detailed miospore stratigraphy dates accurately the ...
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(2006)he Tengiz buildup, an intensely cored and studied isolated carbonate platform in the Precaspian Basin, contains a succession of shallow-water deposits ranging from Famennian to Bashkirian in age. From a reservoir perspective, ...
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(2006)The Gföhl nappe, the uppermost structural unit in the Moldanubian Zone of the Variscan Bohemian Massif, contains a distinctive association of HP crustal granulite (900-1000°C, 15-18 kbar) and UHP mantle garnet peridotite ...
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(1999)Review of sea-level changes during the big five mass extinctions and several lesser extinction events reveals that the majority coincide with large eustatic inflexions. The degree of certainty with which these eustatic ...
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(2006)Numerous silicified and calcareous sclerites of various sizes, recovered from the latest Famennian of Thuringia (Germany), allow the description of the first complete growth series of a blind proetoid trilobite: Drevermannia ...
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(2006)The study aims to put constraints on global environmental changes, which took place during the Frasnian-Famennian (F/F) transition by using a geochemical multiproxy approach. For this several key European F/F boundary ...
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(2002)A newly compiled global reef database indicates that the 5–6 Myr long Frasnian (Late Devonian) metazoan reef episode had relatively low diversity compared to Middle Devonian highs (with over 200 genera of calcitic rugose ...
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(2004)Detailed biostratigraphic correlation of the late Frasnian and Famennian sectoins in the South Urals shows that the key global scale events near the boundary of Frasnian and Famennian are clearlyxpressed in combination ...
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(2003)Stratotype sections of the lower Famennian Volgograd Horizon, which are located in the Umet-Linevo paleodepression, the northeastern Volgograd area, are described. Lithological-geophysical characteristics of borehole ...
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(2001)The stratigraphic record, distribution and composition of the selachian genus Lissodus is briefly reviewed. 38 species are currently recognised, with 26 further records not designated to species level. Teeth of the genus ...
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(2002)The Famennian sediments of the southern Transcaucasia are described. The Noravank and Ertich formations are referred to the lower substage of the Famennian, the Kadrli and Shamamidzor formations, to the middle one, and the ...
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(1999)The prime causation of the mid-Late Devonian mass extinction near the Frasnian-Famennian (F-F) boundary remains uncertain. Nevertheless, geochemical evidence has been presented recently as decisive evidence of a giant ...
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(2004)On the western slope of the Southern Urals, a continuous conodont zone sequence within different facies of the Frasnian-Famennian (F-F) boundary beds is documented. In all the sections the boundary between both stages runs ...
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(2006)Using the results of geological mapping, including the petrostructural and petrochemical data, available, as well as the results of the previous researchers, a composite characteristic is offered for the geologic structure ...
Now showing items 1-20 of 23