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GEOREF RECORD
Isotope geochronology of Paleozoic granitoids from the Selenga-Stanovoy mountainous area
M. E. Kazimirovsky, G. P. Sandimirova and E. V. Bankovskaya
Isotope geochronology of Paleozoic granitoids from the Selenga-Stanovoy mountainous area
Russian Geology and Geophysics (November 2011) 43 (11): 919-935
Isotope geochronology of Paleozoic granitoids from the Selenga-Stanovoy mountainous area
Russian Geology and Geophysics (November 2011) 43 (11): 919-935
Index Terms/Descriptors
- absolute age
- Asia
- batholiths
- biotite granite
- Carboniferous
- Commonwealth of Independent States
- feldspar group
- framework silicates
- granites
- granodiorites
- igneous rocks
- intrusions
- Ordovician
- Paleozoic
- plagioclase
- plutonic rocks
- Rb/Sr
- Russian Federation
- Shilka Valley
- silicates
- Silurian
- Transbaikalia
- Zabaykalskiy Russian Federation
- Chersky Range
- Dzhida Basin
- Yablonovy Range
- Malkhan Complex
- Olekma Complex
- Krestovsky Massif
- Aleursky Range
- Khor'kovy Range
- Mareketa-Bereya Massif
- Zharcha Massif
- Amazar Ridge
- Ingoda Batholith
Latitude & Longitude
Abstract
We have considered the problems of dating Paleozoic granitoids of the Selenga-Stanovoy mountainous area (SSMA) and reviewed and compared the available dates. New Rb-Sr-isotope dates for four objects of the West Stanovoy structure-formational zone (WS) are presented, which confirm the existence of Carboniferous (360-290 Ma) magmatic stage not only in the west but also in the center of the WS and refine the age of Early Paleozoic batholiths of the Olekma complex (480-430 Ma). This indicates that they are coeval with batholiths of the Malkhan complex in the neighboring Khilok-Vitim SFZ. Moreover, as all studied granitoids are of crustal (palingenetic) origin, we proposed a model for Sr-isotope evolution of this segment of the Earth's crust.
ISSN: 1068-7971
EISSN: 1878-030X
Serial Title: Russian Geology and Geophysics
Serial Volume: 43
Serial Issue: 11
Title: Isotope geochronology of Paleozoic granitoids from the Selenga-Stanovoy mountainous area
Affiliation: Russian Academy of Sciences, Siberian Branch, Institute of Geochemistry,
Irkutsk,
Russian Federation
Pages: 919-935
Published: 201111
Text Language: English
Publisher: Novosibirsk State University,
Novosibirsk,
Russian Federation
References: 21
Accession Number: 2023-004346
Categories: GeochronologyIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch map
N51°10'60" - N53°43'00", E111°00'00" - E121°12'00"
Country of Publication: Russian Federation
Secondary Affiliation: GeoRef, Copyright 2023, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202304
