Results 21 to 30 of about 1,054 (150)

Vendian age of igneous rocks of the Chamberlain valley area (Northern part of the Wedel Jarlsberg Land, Svalbard Archipelago)

open access: yesЗаписки Горного института, 2022
The geological structure, structural relations with the underlying complexes, mineral composition, age and origin of sedimentary-volcanogenic and intrusive formations of the Chamberlain valley area (northern part of the Wedel Jarlsberg Land, Svalbard ...
Aleksandr N. Sirotkin   +1 more
doaj   +1 more source

Clarks of concentration of some trace elements in Upper Riphean clay rocks OF Bashkirian meganticlinorium (South Urals)

open access: yesЛитосфера, 2018
The clarke of concentration of a number of rare and trace elements in clay rocks of the Karatau Group of the Upper Riphean of the Bashkirian meganticlinorium (South Urals) was analyzed.
Andrey V. Maslov
doaj   +1 more source

Structural peculiarities and geodynamic evolution of Taimyr Peninsula in the Neoproterozoic

open access: yesЛитосфера, 2018
Structural relationships between the Neoproterozoic rock complexes of a continental massif, island arc with rear reef and back-arc basin geodynamic affinities are described and considered in this work based on field observations within the northeastern ...
Sergei G. Samygin
doaj   +1 more source

Problems of the time of foundation and the tectonic evolution of the Onega — Kandalaksha paleorift in the light of the data of isotopic geochronology

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2018
Kandalaksha graben, located in the water-area of the White sea, is a part of the Onega-Kandalaksha paleorift of the Riphean time of foundation. It is filled with the terrigenous formations of the Terskaya suites ranging from 3 to 8 km by depth, while the
A. S. Baluev   +4 more
doaj   +1 more source

Ediacaran Microfossils from the Ura Formation, Baikal-Patom Uplift, Siberia: Taxonomy and Biostratigraphic Significance [PDF]

open access: yes, 2014
Abundant and diverse microfossils from shales of the uppermost Ura Formation, central Siberia, document early to middle Ediacaran life along the southeastern margin of the Siberian Platform.
Knoll, Andrew Herbert   +2 more
core   +1 more source

Rare Earths in Geological Formations of Central Region of the Dniester River Basin, Republic of Moldova

open access: yesAdvances in Geology, Volume 2015, Issue 1, 2015., 2015
In the different varieties of crystalline basement of Archean and Proterozoic age and in Vendian (Ediacaran) basal layers of platform coverture in the Central Basin of the Dniester River were found relatively high concentrations of Lanthanum, Cerium, Yttrium, Ytterbium, and Scandium.
Aurelia Popuiac, Giovanni Martinelli
wiley   +1 more source

Evaporites and the salinity of the ocean during the Phanerozoic: Implications for climate, ocean circulation and life [PDF]

open access: yes, 2005
A compilation of data on volumes and masses of evaporite deposits is used as the basis for reconstruction of the salinity of the ocean in the past.
Balukhovsky, A. N.   +5 more
core   +1 more source

Carbon and Oxygen Isotopic Stratigraphy of Mesoproterozoic Carbonate Sequences (1.6–1.4 Ga) from Yanshan in North China

open access: yesInternational Journal of Oceanography, Volume 2011, Issue 1, 2011., 2011
In Yanshan, located in the northern part of North China, Mesoproterozoic carbonate sequences (1.6–1.4 Ga) form a 10, 000 m thick succession in an aulacogen basin. Carbon and oxygen isotope (δ13O and δ18O, resp.) data were obtained from 110 carbonate samples across three sections of these Mesoproterozoic deposits. From the early to late Mesoproterozoic,
Kuang Hongwei   +6 more
wiley   +1 more source

GEOCHRONOLOGY AND SR-ND ISOTOPE GEOCHEMISTRY OF LATE PALEOZOIC COLLISIONAL GRANITOIDS OF UNDINSKY COMPLEX (EASTERN TRANSBAIKAL REGION)

open access: yesГеодинамика и тектонофизика, 2017
There are several geodynamic models of the Central Asian Orogenic Belt (CAOB) development [Şengör et al., 1993, Zorin, 1999; Parfenov et al., 1999, 2003; Willem et al., 2012; and others].
S. I. Dril   +6 more
doaj   +1 more source

Deep Structure, Tectonics and Petroleum Potential of the Western Sector of the Russian Arctic

open access: yesJournal of Marine Science and Engineering, 2021
The evolutionary-genetic method, whereby modern sedimentary basins are interpreted as end-products of a long geological evolution of a system of conjugate palaeo-basins, enables the assessment of the petroleum potential of the Western sector of the ...
Alexey S. Egorov   +4 more
doaj   +1 more source

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