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Now showing items 1-20 of 127
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(1996)Modern geology now concentrating its attention not at individual sections, but on paleocontinents in gross, and initiated global generalizations, appeals for a unified approach to model zonal scales usable as standards in ...
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(1992)New multichannel seismic-reflection profiles shot across the north Ural thrust front indicate the presence of previously unknown wedge-shaped foreland-verging blind duplex. The structure of this zone shows westward thrusting ...
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(1997)The estimated path of seawater 87Sr/86Sr during the Silurian and Devonian is based on 86 analyses (84 whole rocks) presented here and in other published results. The seawater 87Sr/86Sr rose steadily throughout the Silurian ...
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(1998)Global sea-level fluctuated markedly during the early Silurian, probably as a result of the waxing and waning of ice-sheets in the South American portion of Gondwana. The highest sea-levels of the Silurian are recorded by ...
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(2001)Eurypterid (Eurypterida, Chelicerata) palaeoecology is reviewed, in light of a statistical analysis of 74 Silurian and Early Devonian eurypterid assemblages. Kjellesvig-Waering's three eurypterid 'biofacies' model is ...
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(2004)We have analysed 129 stratigraphic sections from the Timan-Pechora basin, from its adjacent continental shelf and from the South Barents Sea basin, in order to determine whether existing models of extensional sedimentary ...
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(1997)The exoskeleton of one of the earliest osteostracans, Aestiaspis viitaensis Janvier et Lelievre, 1994, from the Silurian of Saaremaa Island (Estonia) was studied using a scanning electron microscope. On the basis of the ...
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(2003)A huge fluorite deposit at Voznesenka in the Khanka massif, Far East Russia is concluded to have formed at ca. 450 Ma in Late Ordovician time based on the K-Ar ages for Li-micas in the fluorite ore and greisenized leucogranite ...
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GEODYNAMIC EVOLUTION OF THE EUROPEAN VARISCAN FOLD BELT: PALAEOMAGNETIC AND GEOLOGICAL CONSTRAINTS (1997)The Variscan fold belt of Europe resulted from the collision of Africa, Baltica, Laurentia and the intervening microplates in early Paleozoic times. Over the past few years, many geological, palaeobiogeographic and ...
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(1989)Analysis of the evolution of Phanerozoic stratigraphic complexes of the western margin of the East European craton (EEC) and the Central European Platform (CEP) shows that their formation depended on the corresponding ...
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(2003)Specific porphyraceous biotite-amphibole granites considered rapakivi-like according to texture and rock and mineral compositions have been distinguished among granitoids in the eastern Hovsgol region. The granites are ...
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HELIOLITOID CORALS WITH CORMIDIA: CHARACTERIZATION, TAXONOMIC COMPOSITION, AND STRATIGRAPHIC RANGE (2004)Four types of heliolitoid cormidia are established and characterized. Cormidia occur in 4 orders, 6 families, 27 genera, and 103 species. The heliolitoids with cormidia, as well as the entire subclass Heliolitoidea, reached ...
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(2003)Integrated graptolite, conodont and chitinozoan biostratigraphical data is presented from the Rhuddanian through to lower Sheinwoodian of the Aizpute-41 core, Latvia. Correlation of the biozonation schemes based upon the ...
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(1998)Integrated graptolite, conodont and chitinozoan biostratigraphical data are presented from the lower Silurian of the Ohesaare core, Saaremaa, Estonia. A precise correlation of graptolite and conodont biozonations for much ...
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(Общество с ограниченной ответственностью «Георесурсы», 2018)A conodont sequence from the Przhidolian stage of the Upper Silurian and almost the entire Lokhkovian stage of the Lower Devonian has been established in the sections of the Upper Silurian-Lower Devonian on the southwestern ...
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(2003)New genera based on new type species, Paramichelinoceras (P. agatovense), Oisengoceras (O. burskyi), Mimokionoceras (M. valentinae), Neritoceras (N. rakovense), Dawsonoceroides (D. nekhvatovensis), Eomooreoceras (E. ...
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(2003)Paleomagnetic measurements were made on samples from Silurian, Devonian, Carboniferous and Permian aged rocks from the Omulevka terrane, northeast Russia. The Omulevka terrane is a fragment of continental margin that forms ...
Now showing items 1-20 of 127