First results of U-Pb geochronological studies of the Precambrian granitoids of the Batomga block of the Aldan shield

Mishkin, M. A.; Lennikov, A. M.; Bayanova, T. B.; Vovna, G. M.; Sakhno, V. G.; Oktyabrsky, R. A.; Badredinov, Z. G.

doi:10.1134/s1819714010030048

Cited by 10 publications

(1 citation statement)

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“…The U-Th-Pb zircon systems are extremely complex owing to the vari able combination of the inherited components and the partial redistribution of the chemical elements and the new growth of crystals. However, the SHRIMP studies of zircons showed that the record of the most part of the thermal evolution of polychronous complexes is retained in one or several generations of their crystals extracted from any rock sample [23,31,44,52]. Within the southeastern ASS, the lower Precam brian is subdivided into five large units.…”

Section: Introductionmentioning

confidence: 99%

Isotopic-geochronological studies of zircons from the Early Precambrian rocks of the southeastern Aldan-Stanovoy shield: New results and their geological interpretation

Guryanov

Roganov

Zelepugin

et al. 2012

Russ. J. of Pac. Geol.

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The results of the U-Pb (SHRIMP II secondary ion microprobe) study of zircons from the meta morphic, ultrametagenic, and metamorphosed plutonic rocks of the southeastern Aldan-Stanovoy shield are reported and their geological interpretation is given. The obtained dates represent mainly the timing of the rock transformation at the different stages of prograde and retrograde metamorphism, ultrametamorphism, magmatism, and tectonic dislocations, rather than the age of the rock formation. The age values were united into nine generalized groups corresponding to definite geological events, which, in turn, are correlated with tectonic and petrological events in the western parts of the Stanovoy granite-greenstone and Aldan granu lite-gneiss domains.

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Section: Introductionmentioning

confidence: 99%