Back to Search
Start Over
Mesozoic age of the Gilyui Metamorphic Complex in the junction zone of the Selenga-Stanovoi and Dzhugdzhur-Stanovoi superterranes, Central Asian fold belt.
- Source :
-
Doklady Earth Sciences . Jun2016, Vol. 468 Issue 2, p561-565. 5p. - Publication Year :
- 2016
-
Abstract
- The Gilyui Complex includes sedimentary and volcanic rocks metamorphosed to amphibolite and epidote-amphibolite facies, which constitute blocks confined to the main structural sutures of the Dzhugdzhur-Stanovoi superterrane in the Central Asian fold belt. In recent stratigraphic scales, they are considered as being Neoarchean in age with Nd model age values of 1.5-3.0 Ga. The youngest detrital zircons from metamorphosed mudstone of the Gilyui Complex yield a date of 285 ± 4 Ma, which determines the lower age limit for the formation of its protolith. The age of crystallization of rhyolites from the Gilyui Complex is determined to be 231 ± 4 Ma. If the rhyolites form volcanic flow units or sills, the Gilyui Complex is approximately 230 Ma or 231 ± 4 to 285 ± 4 Ma old, respectively. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MESOZOIC Era
*METAMORPHIC rocks
*RHYOLITE
*AMPHIBOLITES
STANOVOI Range (Russia)
Subjects
Details
- Language :
- English
- ISSN :
- 1028334X
- Volume :
- 468
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Doklady Earth Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 116790588
- Full Text :
- https://doi.org/10.1134/S1028334X16060167