New Minimal 87Sr/86Sr Values in Permian Biogenic Carbonates of the Omolon Massif (Northeastern Asia)

Autor:	Nikolay A. Goryachev, I. L. Vedernikov, T. V. Filimonova, D. P. G. Bond, I. V. Brynko, J. Harvey, Alexander S. Biakov
Rok vydání:	2019
Předmět:	geography Strontium geography.geographical_feature_category 010504 meteorology & atmospheric sciences Permian Geochemistry chemistry.chemical_element Massif 010502 geochemistry & geophysics 01 natural sciences chemistry Stage (stratigraphy) Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences Geology 0105 earth and related environmental sciences
Zdroj:	Doklady Earth Sciences. 488:1143-1147
ISSN:	1531-8354 1028-334X
DOI:	10.1134/s1028334x19100027
Popis:	For the first time very low values (up to 0.706707) of the ratio 87Sr/86Sr were recorded in the biogenic carbonates of the Omolon massif (Northeast Asia) of the Capitanian age. These results are in good agreement with previously obtained data on limestones in Japan (Kani et al., 2013; 2018). In general, the strontium ratio curve constructed by us repeats the well-known world trend, differing by its somewhat underestimated (by an average of 0.0005–0.0008) values. The Capitanian strontium minimum can be associated with the entry into the ocean of significant amounts of lightweight femic strontium due to a sharp increase in paleospreading. The maximum values of the strontium ratio, obtained from the middle part of the Intomodesma evenicum bivalve Subzone are 0.706986, which corresponds to the lower part of the Changhsingian stage.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f7553c237d1aecf12b9a81cf4df2680d https://doi.org/10.1134/s1028334x19100027 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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