Results 31 to 40 of about 3,614 (211)
Precambrian diamond crystals from the Siberian craton
Доклады Академии наук, 2019 Analysis of diamond grains from placers in the northeastern Siberian craton shows that some diamond varieties (round dodecahedra, varieties II and V-VII in the classification of Orlov) may originate from Precambrian sources. The Precambrian diamonds have different sedimentation histories.
V. P. Afanasiev +3 more
openaire +2 more sources
Mantle Sulfides and their Role in Re-Os and Pb Isotope Geochronology [PDF]
, 2015 Publisher's PDFUniversity of Delaware.
Harvey, J, Shirey, SB, Warren, JM
core +1 more source
Geosystems and Geoenvironment, 2023 Thermobarometric calculations for mineral inclusions in diamonds provide a systematic comparison of P-T-fO2 conditions for different cratons and mobile belts worldwide, using a database of 4440 mineral EPMA analyses.
Igor Ashchepkov +3 more
doaj +1 more source
Circum-Arctic mantle structure and long-wavelength topography since the Jurassic [PDF]
, 2014 The circum-Arctic is one of the most tectonically complex regions of the world, shaped by a history of ocean basin opening and closure since the Early Jurassic. The region is characterized by contemporaneous large-scale Cenozoic exhumation extending from
Flament, N. +5 more
core +3 more sources
Геодинамика и тектонофизика, 2017 Volcanic eruptions within the Baikal rift of predominantly basaltic composition belong to numerous small-volume eruptions, which took place in Cenozoic in Central Asia.
E. I. Demonterova +2 more
doaj +1 more source
Sr, Nd, and Pb isotope evidence for a mantle origin of alkali chlorides and carbonates in the Udachnaya kimberlite, Siberia [PDF]
, 2005 The kimberlite rocks of the Udachnaya-East pipe (Siberia) are uniquely fresh and contain very high abundances of primary volatiles (Cl, CO2, S). Alkali elements and chlorine are extremely abundant in the reconstructed kimberlite melt compositions, and ...
Kamenetsky, MB +4 more
core +1 more source
Geosciences, 2022 The tectonic evolution of the Siberian Cratonic margins offers important clues for global paleogeographic reconstructions, particularly with regard to the complex geological history of Central Asia and Precambrian supercontinents Columbia/Nuna and ...
Igor I. Likhanov
doaj +1 more source
Геодинамика и тектонофизика, 2017 The Siberian craton consists of Archean blocks, which were welded up into the same large unit by ca 1.9 Ga [Gladkochub et al., 2006; Rojas-Agramonte et al., 2011].
A. V. Ivanov +4 more
doaj +1 more source
Deep structure of the Baikal rift zone revealed by joint inversion of gravity and seismology [PDF]
, 2003 International audience[1] The question of plate boundary forces and deep versus shallow asthenospheric uplift has long been debated in intracontinental rift areas, particularly in the Baikal rift zone, Asia, which is colder than other continental rifts ...
Achauer, U +6 more
core +4 more sources
Magmas Erupted during the Main Pulse of Siberian Traps Volcanism were Volatile-poor [PDF]
, 2011 The eruption of the Siberian Traps Large Igneous Province (SLIP) at the Permo-Triassic boundary was synchronous with environmental degradation and the largest known mass extinction in the geological record.
Svetlana Sibik +21 more
core +3 more sources