Results 1 to 10 of about 296 (167)

Global implication of mesoproterozoic (~ 1.4 Ga) magmatism within the Sette-Daban Range (Southeast Siberia) [PDF]

open access: yesScientific Reports, 2021
Mesoproterozoic period included several global tectonic events like break-up of Nuna and formation of Rodinia. However, although Siberia is a significant piece of both supercontinents, Mesoproterozoic time is marked by quiescence of magmatic and tectonic
Sergey V. Malyshev   +6 more
doaj   +2 more sources

Trends in Ocean S‐Isotopes May Be Influenced by Major LIP Events

open access: yesGeophysical Monograph Series, Page 341-376., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ross. R. Large   +5 more
wiley  

+9 more sources

FINAL CONSOLIDATION AGE OF THE SOUTHERN PART OF THE SIBERIAN CRATON

open access: yesГеодинамика и тектонофизика, 2023
Petrographic, geochemical and U-Pb geochronological research studies are done into cataclastic granitoids of the southeastern part of the Irkutsk block of the Sharyzhalgay basement uplift of the Siberian craton – the uplift which is considered southern ...
T. V. Donskaya   +5 more
doaj   +2 more sources

Petrogenesis of juvenile pelletal lapilli in ultramafic lamprophyres [PDF]

open access: yesScientific Reports, 2023
The Chadobets alkaline-carbonatite complex (Siberian craton) is a natural laboratory for all varieties of ultramafic lamprophyres, including damtjernites formed by fluid-explosion mechanisms, which contain a large number of pelletal lapilli.
Ilya Prokopyev   +5 more
doaj   +2 more sources

Localized and Transient Oxygenation of Shallow Oceans of Southwestern Laurentia at the Ediacaran-Cambrian Boundary. [PDF]

open access: yesGeobiology
ABSTRACT The Ediacaran–Cambrian boundary, which precedes one of the most significant biotic diversification events in Earth's history, is associated with a global negative carbon isotope excursion termed the BAsal Cambrian carbon isotope Excursion (BACE).
Chanchai W   +6 more
europepmc   +2 more sources

THE “CLINOPYROXENE” PALEOGEOTHERM BENEATH THE OBNAZHENNAYA KIMBERLITE PIPE AND THIСKNESS OF LITHOSPHERE UNDER THE KUOYKA FIELD (SIBERIAN CRATON, YAKUTIA)

open access: yesГеодинамика и тектонофизика, 2022
The mantle paleogeotherm under the Obnazhennaya kimberlite pipe (Kuoika field, Siberian craton) was reconstructed using the chemical composition of clinopyroxene xenocrystals and the FITPLOT program.
E. A. Muravjeva   +5 more
doaj   +1 more source

STRAIN RATES FOR THE SOUTHERN SIBERIAN CRATON DERIVED FROM GPS MEASUREMENTS

open access: yesГеодинамика и тектонофизика, 2022
This paper presents quantitative estimates of the strain rates for the southern part of the Siberian craton derived from GPS data. The obtained results confirmed the theoretical concept of low strain rates (10–9×year–1) in the intra-platform areas.
S. V. Ashurkov
doaj   +1 more source

DEEP STRUCTURE AND FORMATION MODEL OF CONTINENTAL CRUST OF THE VERKHOYANSK FOLD- AND-THRUST BELT IN THE LATE MESOZOIC

open access: yesГеодинамика и тектонофизика, 2023
The article considers the geological framework of a large orogenic structure in northeastern Eurasia - the Verkhoyansk fold-and-thrust belt (VFTB), formed in the Late Mesozoic on the eastern margin of the Siberian craton.
L. V. Kungurtsev, E. Y. Goshko
doaj   +1 more source

Numerical analysis of the state of stress and strain in the Yenisei Ridge based on the regional tectonic state in the Asian continent

open access: yesFracture and Structural Integrity, 2019
The paper presents the calculation of modern tectonic flow fields in the Yenisei Ridge located on the stable Siberian Craton. At the first stage, we solve the problem of calculating the average field of tectonic flows due to collisional processes at the ...
Akhmetov Ayan   +2 more
doaj   +3 more sources

XENOLITHS OF POLYMICTIC BRECCIAS FROM KIMBERLITES OF THE YAKUTIAN DIAMONDIFEROUS PROVINCE

open access: yesГеодинамика и тектонофизика, 2022
The polymictic breccias, extremely rare mantle conglomerates being the fragments of rocks and large mantle minerals cemented with fine-grained mass have been long provoking interest of petrologists worldwide.
L. N. Pokhilenko   +2 more
doaj   +1 more source

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