Paleogeography of the West Siberian Sedimentary Basin in the Late Bajocian–Bathonian

2021 ◽  
Vol 62 (08) ◽  
pp. 964-976
Author(s):  
V.A. Kazanenkov
Keyword(s):  
Sedimentary Basin ◽  
Geochemical Data ◽  
The West ◽  
The Core ◽  
Core Description ◽  
First Time ◽  
Different Parts ◽  
West Siberian Basin

Abstract —The paper presents results of regional paleogeographic reconstructions of the West Siberian sedimentary basin in the Late Bajocian–Bathonian. Regional paleogeographic maps of the Yu4, Yu3 and upper part of the Yu2 reservoir units were constructed and described for the first time ever. The implemented approach provided insights into the evolution of paleolandscapes and highlighted the deposition features of the Upper Tyumen Subformation and Malyshev Formation in the different parts of the West Siberian basin. The compilation of paleogeographic maps was based on the electrofacies analysis performed for individual parts of the Malyshev stratigraphic horizon, with regard to the core description materials, paleontological, sedimentological, geochemical data and other. The paleogeographic control of the reservoir’s formation in the Bathonian regional reservoir is discussed.

Numerical simulation of permafrost evolution as a part of sedimentary basin modeling: permafrost in the Pliocene–Holocene climate history of the Urengoy field in the West Siberian basin

1997 ◽  
Vol 34 (7) ◽  
pp. 935-948 ◽  
Author(s):  
Yurii Galushkin
Keyword(s):  
Sedimentary Basin ◽  
Salt Content ◽  
Lower Boundary ◽  
Initial Time ◽  
Basin Modeling ◽  
The West ◽  
Climate History ◽  
Unfrozen Water Content ◽  
Hydrate Stability ◽  
West Siberian Basin

Present-day temperature profile may be used as an important constraint for reconstruction of the thermal regime in sedimentary basin modeling. This type of profile is significantly non-steady state, especially for basins located at high and middle latitudes. However, estimations of past thermal regimes are indefinite and often limited by knowledge of past glaciations and by the simple two-layer model usually employed. In this paper, permafrost modeling was carried out as a continuation of basin modeling of the sedimentary section of Urengoy field of the West Siberian basin (66°N, 77°E). Consideration of surface temperatures beginning with the Triassic, a refined initial temperature distribution, permafrost modeling for the past 3.4 Ma, and use of a real lithological cross section distinguish this approach from previous studies. Depth and time variations in thermophysical parameters of rocks (heat conductivity, heat capacity, unfrozen water content, salt content, and porosity) had a considerable influence on the results of modeling. The time 3.4 Ma, when air temperatures in the area became lower than 0 °C, has been considered as the initial time for permafrost modeling. According to the model, initial temperatures deviated 10–15 °C from their present-day values due to climate variations during the last 3.4 Ma. Deviations in the value of heat flow can exceed 100%. There were about five glacial periods in the Late Pliocene and nearly the same number in the Pleistocene in the area. The estimated thickness of permafrost did not exceed 650 m and the depth of the lower boundary of methane hydrate stability did not exceed 900 m (from the ground surface). Today, the predicted depths of permafrost [Formula: see text] and of hydrate stability (from 250 to 700 m) are in reasonable agreement with the observed values for the Urengoy area.

scholarly journals Diversity of Bacterial Biota in Capnodis tenebrionis (Coleoptera: Buprestidae) Larvae

Pathogens ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 4 ◽  
Author(s):  
Hana Barak ◽  
Pradeep Kumar ◽  
Arieh Zaritsky ◽  
Zvi Mendel ◽  
Dana Ment ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Artificial Diet ◽  
Fruit Trees ◽  
Stone Fruit ◽  
The West ◽  
Future Studies ◽  
The Core ◽  
Miseq Platform ◽  
First Time

The bacterial biota in larvae of Capnodis tenebrionis, a serious pest of cultivated stone-fruit trees in the West Palearctic, was revealed for the first time using the MiSeq platform. The core bacterial community remained the same in neonates whether upon hatching or grown on peach plants or an artificial diet, suggesting that C. tenebrionis larvae acquire much of their bacterial biome from the parent adult. Reads affiliated with class levels Gammaproteobacteria and Alphaproteobacteria (phylum Proteobacteria ca. 86%), and Actinobacteria (ca. 14%) were highly abundant. Most diverse reads belong to the families Xanthomonadaceae (50%), Methylobacteriaceae (20%), Hyphomicrobiaceae (9%), Micrococcaceae (7%) and Geodermatophilaceae (4.5%). About two-thirds of the reads are affiliated with the genera Lysobacter, Microvirga, Methylobacterium, and Arthrobacter, which encompass species displaying cellulolytic and lipolytic activities. This study provides a foundation for future studies to elucidate the roles of bacterial biota in C. tenebrionis.

scholarly journals Chemostratigraphy of the Snorry drift in the Northern Atlantic

2019 ◽  
Vol 59 (3) ◽  
pp. 469-475
Author(s):  
L. L. Demina ◽  
Ye. A. Novichkova ◽  
N. V. Kozina
Keyword(s):  
North Atlantic ◽  
Geochemical Data ◽  
Western Slope ◽  
Isotopic Data ◽  
The Core ◽  
Sedimentary Matter ◽  
49Th Cruise ◽  
Oxygen Isotopic ◽  
Northern Atlantic ◽  
First Time

On the basis of multi-element chemical analysis and oxygen isotopic data, for the first time the distribution of some geochemical indicators was investigated in the sediment core taken at the Western slope of the Snorry contourite drift (St. AI-3378, North Atlantic) in the 49th cruise of RV "Akademik Ioffe" in 2015. Down the core an asynchronous change in the terrigenous (IRD, Al, Si, Ti, Zr, Cr) and biogenic indicators (CaCO3, Corg) was recorded. Based on multi-element geochemical data, the rhythmic distribution along the core of terrigenous and biogenic sedimentary material has been revealed. Sedimentary matter entered the study area as a result of ice and iceberg unloading, as well as brought by near-bottom currents. The intensity and direction of the near-bottom contour currents seemed to change dramatically with the change of warming and cooling periods during the six marine isotope stages MIS 1–6 (the last 190 ka).

New records of aphyllophoroid fungi (Basidiomycota) for the Khanty-Mansi Autonomous Area — Yugra (West Siberia)

2020 ◽  
Vol 54 (2) ◽  
pp. 387-396
Author(s):  
I. V. Stavishenko
Keyword(s):  
Animal Ecology ◽  
New Records ◽  
West Siberia ◽  
The West ◽  
First Time ◽  
Khanty Mansi Autonomous ◽  
Aphyllophoroid Fungi

The paper provides data on records of 29 species of aphyllophoroid fungi new for the the Khanty-Mansi Autonomous Area — Yugra. Among them 10 species (Amaurodon cyaneus, Amyloxenasma allantosporum, Asterostroma laxum, Byssoporia terrestris, Paullicorticium pearsonii, Pseudomerulius montanus, Sistotrema sernanderi, Skeletocutis alutacea, S. ochroalba, Tubulicrinis orientalis) are published for the first time for Siberia, and 3 species (Scytinostroma praestans, Tomentellopsis zygodesmoides, Tubulicrinis strangulatus) are new for the West Siberia. Data on their locations, habitats and substrates in region are indicated. The specimens are kept in the Museum of the Institute of Plant and Animal Ecology of the Ural Branch of the RAS (SVER).

Petroleum geology of the West Siberian Basin and a detailed description of the Samotlor oil field

1977 ◽  
Author(s):  
James W. Clarke ◽  
O.W. Girard ◽  
James Peterson ◽  
Jack Rachlin
Keyword(s):  
Oil Field ◽  
Petroleum Geology ◽  
The West ◽  
West Siberian Basin

Status of Family Fissidentaceae in Gujarat

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
D.G. Shah ◽  
D.N. Mehta ◽  
R.V. Gujar
Keyword(s):  
Distinct Species ◽  
The State ◽  
The Other ◽  
Land Plants ◽  
Reproductive Structures ◽  
The Family ◽  
The Status ◽  
Vegetative Characters ◽  
First Time ◽  
Different Parts

Bryophytes are the second largest group of land plants and are also known as the amphibians of the plant kingdom. 67 species of bryophytes have been reported from select locations across the state of Gujrat. The status of family fissidentaceae which is a large moss family is being presented in this paper. Globally the family consists of 10 genera but only one genus, Fissidens Hedw. has been collected from Gujarat. Fissidens is characterized by a unique leaf structure and shows the presence of three distinct lamina, the dorsal, the ventral and the vaginant lamina. A total of 8 species of Fissidens have been reported from the state based on vegetative characters as no sporophyte stages were collected earlier. Species reported from the neighboring states also showed the absence of sporophytes. The identification of different species was difficult due to substantial overlap in vegetative characters. Hence a detailed study on the diversity of members of Fissidentaceae in Gujarat was carried out between November 2013 and February 2015. In present study 8 distinct species of Fissidens have been collected from different parts of the state. Three species Fissidens splachnobryoides Broth., Fissidens zollingerii Mont. and Fissidens curvato-involutus Dixon. have been identified while the other five are still to be identified. Fissidens zollingerii Mont. and Fissidens xiphoides M. Fleisch., which have been reported as distinct species are actually synonyms according to TROPICOS database. The presence of sexual reproductive structures and sporophytes for several Fissidens species are also being reported for the first time from the state.

From Prime Ministerial Power to Core Executive

2017 ◽  
Author(s):  
R. A. W. Rhodes
Keyword(s):  
Decision Making ◽  
Prime Minister ◽  
Central Government ◽  
Government Policies ◽  
Approaches To Studying ◽  
The Core ◽  
Executive Politics ◽  
Core Executive ◽  
The Government ◽  
Different Parts

The core executive is a new concept replacing the conventional debate about the power of the prime minister and the Cabinet. It refers to all those organizations and procedures that coordinate central government policies, and act as final arbiters of conflict between different parts of the government machine. In brief, the ‘core executive’ is the heart of the machine. The chapter reviews the several approaches to studying the British executive: prime ministerial government; prime ministerial cliques; Cabinet government; ministerial government; segmented decision-making; and bureaucratic coordination. It then discusses several ways forward by developing new theory and methods. The Afterword discusses the core executive as interlocking networks, and the fluctuating patterns of executive politics.

Europe's Growth Champion

2018 ◽  
Author(s):  
Marcin Piatkowski
Keyword(s):  
Eastern Europe ◽  
Central And Eastern Europe ◽  
High Income ◽  
Lessons Learned ◽  
The West ◽  
Success Stories ◽  
Catch Up ◽  
Inclusive Society ◽  
First Time ◽  
Global Growth

The book is about one of the biggest economic success stories that one has hardly ever heard about. It is about a perennially backward, poor, and peripheral country, which over the last twenty-five years has unexpectedly become Europe’s and a global growth champion and joined the ranks of high-income countries during the life of just one generation. It is about the lessons learned from its remarkable experience for other countries in the world, the conditions that keep countries poor, and challenges that countries need face to grow and become high-income. It is also about a new growth model that this country—Poland—and its peers in Central and Eastern Europe and elsewhere need to adopt to continue to grow and catch up with the West for the first time ever. The book emphasizes the importance of the fundamental sources of growth—institutions, culture, ideas, and leaders—in economic development. It argues that a shift from an extractive society, where the few rule for the benefit of the few, to an inclusive society, where many rule for the benefit of many, was the key to Poland’s success. It asserts that a newly emerged inclusive society will support further convergence of Poland and Central and Eastern Europe with the West and help sustain the region’s Golden Age, but moving to the core of the European economy will require further reforms and changes in Poland’s developmental DNA.

Kidnapped

2014 ◽  
Author(s):  
Robert Louis Stevenson ◽  
Ian Duncan
Keyword(s):  
West Coast ◽  
Historical Novel ◽  
The Novel ◽  
The West ◽  
Scottish Highlands ◽  
Cross Country ◽  
First Time ◽  
Adventure Stories

Your bed shall be the moorcock’s, and your life shall be like the hunted deer’s, and ye shall sleep with your hand upon your weapons.’ Tricked out of his inheritance, shanghaied, shipwrecked off the west coast of Scotland, David Balfour finds himself fleeing for his life in the dangerous company of Jacobite outlaw and suspected assassin Alan Breck Stewart. Their unlikely friendship is put to the test as they dodge government troops across the Scottish Highlands. Set in the aftermath of the 1745 rebellion, Kidnapped transforms the Romantic historical novel into the modern thriller. Its heart-stopping scenes of cross-country pursuit, distilled to a pure intensity in Stevenson’s prose, have become a staple of adventure stories from John Buchan to Alfred Hitchcock and Ian Fleming. Kidnapped remains as exhilarating today as when it was first published in 1886. This new edition is based on the 1895 text, incorporating Stevenson’s last thoughts about the novel before his death. It includes Stevenson’s ‘Note to Kidnapped’, reprinted for the first time since 1922.

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