scholarly journals Depositional environments of Upper Paleozoic and Mesozoic deposits basing on sedimentological studies: Russian sector of the Barents Sea

2020 ◽  
Vol 4 ◽  
pp. 10-16
Author(s):  
E.O. Malysheva ◽  
◽  
E.M. Volfovich ◽  
S.A. Gorbunova ◽  
O.G. Nikiforova ◽  
...  
Keyword(s):  
Barents Sea ◽  
Depositional Environments ◽  
The Barents Sea ◽  
Upper Paleozoic ◽  
Russian Sector

Evolution and classification of the Productellidae (Productida), upper Paleozoic brachiopods

1997 ◽  
Vol 71 (3) ◽  
pp. 381-394 ◽  
Author(s):  
C. H. C. Brunton ◽  
S. S. Lazarev
Keyword(s):  
Type Species ◽  
Western Europe ◽  
Barents Sea ◽  
Late Permian ◽  
New Genera ◽  
New Classification ◽  
Upper Carboniferous ◽  
The Barents Sea ◽  
Upper Paleozoic

In the Lower Devonian the first productellids evolved from their chonetidine ancestors as the Productellinae. This subfamily was the stem group from which all the later Productidina evolved, yet three of its five subfamilies persisted to the end of the Permian. The main characters used in the new classification, here presented, for the Productellidae are described and reviewed, and the main changes seen during its evolution are discussed. Within this new classification five new genera are described: in the Overtoniinae are Barunkhuraya Lazarev from the latest Famennian, Onavia Lazarev from the Tournaisian, both from Mongolia, and Echinariella Lazarev (type species Krotovia jisuensiformis Sarycheva) from the late Permian of Transcaucasia; in the Marginiferinae there is Breileenia Brunton from the Visean of western Europe and in the Plicatiferinae is Maemia Lazarev from the mid and Upper Carboniferous on the coast of the Barents Sea. New species described in these genera are Barunkhuraya indrengynensis Lazarev, Onavia barunkhurensis Lazarev, Breileenia radiata Brunton, Maemia chaykensis Lazarev, and M. nana Lazarev.

scholarly journals Contemporary Issues of Commercial Invertebrates’ Harvesting in the Russian Sector of the Barents Sea

2020 ◽  
Author(s):  
Konstantin Sokolov ◽  
Olga Tyukina ◽  
Daria Martynova
Keyword(s):  
Economic Efficiency ◽  
Barents Sea ◽  
The Barents Sea ◽  
The Status ◽  
Russian Sector

The Russian fishery for invertebrate hydrobionts in the Barents Sea includes the list of a dozen species of crustaceans, mollusks, and echinoderms. This type of fishery is characterized by great diversity in relation to the status of exploited stocks, catch size, and economic efficiency of the fishery. The list of up-to-date problems of this industry is long and includes biological, scientific, commercial, socio-economical, and market issues. Among the main problems of the Russian invertebrate fishery in the Barents Sea, overfishing, underutilization of a number of stocks, and significant emissions from fishing waste are considered. The causes of these problems, possible solutions and the priorities of such a solution are analyzed.

Chemostratigraphy of Triassic successions on the southern Barents Sea Shelf – preliminary results from XRF Core Scanning.

2020 ◽  
Author(s):  
Sigrun Maret Kvendbø Hegstad ◽  
Juha Ahokas ◽  
Matthias Forwick ◽  
Sten-Andreas Grundvåg
Keyword(s):  
Large Scale ◽  
Barents Sea ◽  
Depositional Environments ◽  
Hydrocarbon Exploration ◽  
Marine Geology ◽  
Eurasian Plate ◽  
Preliminary Results ◽  
The Barents Sea ◽  
Xrf Core Scanning ◽  
Drill Cores

<p>The Barents Sea Shelf on the north-western corner of the Eurasian plate has a complex geological history, comprising large-scale processes controlled by plate movements, climatic variations and changing depositional environments. During the last decades, as the search for hydrocarbons within the area gained increased interest, Triassic sequences have been the target of comprehensive investigations. In our project, we test the potential of improving the correlation of Triassic strata using X-ray fluorescence (XRF) core scanning of siliciclastic drill cores.</p><p>XRF core scanning is a frequently used method on soft sediment cores, e.g. within marine geology and palaeo-climate studies. However, the applicability of this method on drill cores from exploration wells from the hydrocarbon industry has not been tested so far. We use this method to establish geochemical stratigraphic parameters, as well as to contribute to the identification of provenances, reconstruct palaeo-envrionments, and support the correlation of drill cores. This provides a novel, fast, inexpensive, and non-destructive method to be applied in hydrocarbon exploration, as well as in studies of lithified siliciclastic sediments in general.</p><p>Triassic intervals from 24 shallow drill cores from the southern Barents Sea (Finnmark Platform, Nordkapp Basin, Svalis Dome, Maud Basin and Bjarmeland Platform) provide the basis for this study. The cores have previously been comprehensively studied and described by IKU (the Norwegian Continental Shelf Institute; today SINTEF Petroleum Research), and studies of provenance and palaeo-environment have also been performed (e.g. Vigran et al., 1986). This data makes it possible to compare the geochemical units established in this study with other stratigraphic information.</p><p>We present preliminary results of establishing geochemical units from XRF core scanning, and the use of these for correlation within known stratigraphic frameworks and between geographic areas, as well as to increase the understanding of changes in provenance and palaeo-environments within these successions in the Barents Sea.</p><p>References:<br>Vigran, J.O., G. Elvebakk, T.L. Leith, T. Bugge, V. Fjerdingstad, R.M. Goll, R. Konieczny, and A. Mørk. 1986. 'Dia-Structure Shallow Drilling 1986. Main data report. IKU Rep. No. 21.3420.00/04/86, 242 pp'.</p><p> </p>

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