First data on early paleozoic granitoids in the basement of West Siberia
4
Citation
3
Reference
10
Related Paper
Citation Trend
Keywords:
Basement
Basement
Cite
Citations (6)
The represented method allows to create three-dimensional geological models of collectors of paleozoic basement, which provides a significant economic effect in the subsequent deposit explorations for typical russian companies - subsoil users, having a limited amount of data. In geological modeling of the collectors of paleozoic basement, the application of the method of dual porosity (double medium) is most relevant. The created approach allows to refine the geological model with an increase of geological reserves by 30 % in reservoirs with natural fracturing.
Basement
Subsoil
Cite
Citations (2)
This paper contains 50 maps which have been designed for use by the geologic community in preparing paleogeographic, biogeographic, climatologic, and tectonic reconstructions of the Paleozoic periods. Seven maps for each of seven Paleozoic intervals are included, plus a suture map showing the outlines of the Paleozoic continents in their present positions. The intervals chosen are the Late Cambrian (Franconian), Middle Ordovician (Llandeilian-earliest Caradocian), Middle Silurian (Wenlockian), Early Devonian (Emsian), Early Carboniferous (Visean), Late Carboniferous (Westphalian CD), and Late Permian (Kazanian). The paleomagnetic information used to orient the continents is given. For each interval, three types of maps are included, one locality map with place names labelled, four paleogeographic maps with our interpretation of the distribution of mountains, lowlands, shallow seas, and deep oceans, and two outline maps for those who prefer to make their own paleogeographic interpretations. Several projections are used-Mercator, Mollweide, and stereographic polar-to suit the various requirements of paleogeographic work.
Devonian
Cite
Citations (577)
Devonian
Late Devonian extinction
Cite
Citations (40)
Currently available Palaeozoic palaeomagnetic data from Gondwanan continents can be interpreted in terms of either (a) a migration of the pole from northern Africa to southern Africa between Ordovician and late Palaeozoic times, or (b) a rapid excursion of the pole from northern Africa to southwest of South Africa during late Ordovician to early Silurian times, followed by a return to central Africa in late Devonian times, thereafter continuing southward again. With respect to this uncertainty, pertinent stratigraphical evidence from western Gondwana includes the distribution of glacial deposits and cold-water and warm-water faunas. This record, although meagre and to some extent contradictory, appears to favour a drift history consistent with the second (b) of the APW alternatives that involves a rapid southerly excursion of the pole by early Silurian times.
Devonian
Excursion
Late Devonian extinction
Cite
Citations (14)
Basement
Cite
Citations (4)
In Spain, the superficial part of the Hercynian basement, under the Permo-triassic cover, appears in two quite different ways : - when the Paleozoic basement is directly covered by the Buntsandstein sandstones, it is altered and rubefied on one or some ten meters of thickness ; - when the Paleozoic basement is covered by the Permian detrital formations, it is not altered. Therefore, a comparative study of clay minerals was performed in the Paleozoic basement and in its altered fades, as well as in the Permian and Triassic sediments.
Basement
Cite
Citations (6)
Geological structure and petroleum potential of Paleozoic in the West-Siberian oil and gas basin remains unstated and underestimated despite research projects conducted and hydrocarbon deposits discovered in Paleozoic sediments. This is attributed firstly to exploration works focused on Mesozoic oil and gas complex due to its high potential, and secondly to exiting tectonic model of the region where Paleozoic complex is included in folded basement or foundation. According to sediment migration theory of hydrocarbon generation, the basement of the basin is not a source for hydrocarbon fluids, and therefore cannot be considered as an independent oil and gas complex with its own hydrocarbon source rocks and reservoirs. However, oil and gas deposits discovered in the basement of Western Siberia show inconsistency of currently existing hypotheses and models. Among them there are two major versions for hydrocarbon origin in Paleozoic organic and inorganic theories. Geological structure and reservoir distribution in Paleozoic complexes is very specific and require a thorough analysis of all geological, geophysical and geochemical materials.
Basement
Hydrocarbon exploration
Basin modelling
Cite
Citations (0)
Stratigraphic and geographic distribution, systematic description, S. flexuosa, Arinskian (lower Permian), Western Australia
Cite
Citations (13)
Basement
Xenolith
Cite
Citations (53)