Results 11 to 20 of about 2,604 (197)
Frontiers in Earth Science, 2023 The Qaidam Precambrian block is located in the northeastern Tibetan Plateau and was intruded by numerous Ordovician-Devonian granitoids during and after the closure of the Proto-Tethys Ocean.
Xia Teng +7 more
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Lethaia, EarlyView., 2021 Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido +4 more
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Paleolatitude and cause of the Svecokarelian orogeny [PDF]
Bulletin of the Geological Society of Finland, 1974 Paleomagnetic data suggest a paleolatitude of 22°N for the Fennoscandian protocontinent during the Svecokarelian orogeny. This is lower than that of the Canadian shield during the same period.
K.J. Neuvonen
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New principles in creation of stratigraphic scheme of the precambrian of the Ukrainian shield
Мінеральні ресурси України, 2018 The article deals with current “Сorrelation chronostratigraphic scheme of еarly Precambrian formations of the Ukrainian Shield” should be divided into two parts: the “Correlation stratigraphic scheme of the Lower-Precambrian formations” and “The scheme ...
M. M. Kostenko
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The Lower Precambrian in the structure of paleozoic in the Subpolar Urals
Доклады Академии наук, 2019 In many polymetamorphic complexes of the Urals, rocks with Early Precambrian age marks have been established. But only with respect to the two polymetamorphic complexes located on the western slope of the Southern Urals: the Taratash and Aleksandrov, their indisputable belonging to the Archean-Paleoproterozoic section is recognized.
Yu. I. Pystina +2 more
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Geosciences, 2021 The results from the geological and geophysical investigations of the Siljan Ring impact structure (central Sweden) have shown that the Paleozoic sedimentary succession and the Precambrian basement were strongly affected by complex deformational ...
Olga Sivalneva +7 more
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Geochemistry, Geophysics, Geosystems, 2022 The deep ocean is generally considered to have changed from anoxic in the Precambrian to oxygenated by the Late Paleozoic (∼420–400 Ma) due to changes in atmospheric oxygen concentrations.
Daniel A. Stolper +5 more
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Геофизический журнал, 2022 The name «Bug Series» was introduced into the Precambrian stratigraphic scheme of the Ukrainian Shield more than half a century ago. During this period, ideas about the composition and age of the series changed several times but, until recently, the ...
V.P. Kyrylyuk
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Article 2. Structural position of suites and strata of the “Bug series”
Геофизический журнал, 2023 The name “Bug Series” was introduced into the Precambrian stratigraphic scheme of the Ukrainian Shield more than half a century ago. During this period, ideas about the composition and age of the series changed several times, but at the same time, until
V.P. Kyrylyuk
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The Precambrian in the Sub-Polar Urals : the chronostratigraphic aspect.
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019 New geochronological data on the Lower and Upper Proterozoic complexes of the Sub-Polar Urals are presented, where the outcropping Precambrian section in the Lyapin anticlinoriumis the stratotype for the entire Timan-Northern Urals region.
Александр Михайлович Пыстин +3 more
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