The nature of the continental crust of Sikhote-Alin as evidenced from the Nb isotopy of Rocks of Southern Primorie

The study of the Nb isotopy of rocks of the continental crustal is an effective tool for evaluating the nature of mechanisms of crust forming processes and ages of their manifestation [1]. In the first approximation, the Nd model isotope age characterizes the age of formation of the continental crus...

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Published inDoklady earth sciences Vol. 451; no. 2; pp. 809 - 813
Main Authors Khanchuk, A. I., Kruk, N. N., Golozubov, V. V., Kovach, V. P., Serov, P. A., Kholodnov, V. V., Gvozdev, V. I., Kasatkin, S. A.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.08.2013
Springer
Springer Nature B.V
Subjects
Continental crust
Crust
Earth
Earth and Environmental Science
Earth Sciences
Geology
Isotopes
Mantle
Oceanic crust
Paleontology
Rocks
Rocks, Sedimentary
Sedimentary rocks
Systematics
Accretionary Prism
DOKLADY Earth Science
Continental Crust
Turbidite
Middle Jurassic
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Summary:The study of the Nb isotopy of rocks of the continental crustal is an effective tool for evaluating the nature of mechanisms of crust forming processes and ages of their manifestation [1]. In the first approximation, the Nd model isotope age characterizes the age of formation of the continental crust from the mantle source or, in other words, transformation from oceanic crust to continental. The Nd isotope systematics of sedimentary rocks of upper levels of the continental crust allows us to estimate the average model age and the possible paleogeographic source areas, as well as to determine the lower age limit of sedimentation if there are no paleontological data. Moreover, the use of two stage Nd model ages of granitoides along with the geochemical and petrological data obtained allow us to obtain data about the deep levels of the continental crust (levels of generation of the granitic melt).
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X13080011