NDLI: Paleoproterozoic accretion in the Northeast Siberian craton: Isotopic dating of the Anabar collision system

Content Provider	Springer Nature Link
Author	Rosen, O. M. Levskii, L. K. Zhuravlev, D. Z. Rotman, A. Ya. Spetsius, Z. V. Makeev, A. F. Zinchuk, N. N. Manakov, A. V. Serenko, V. P.
Copyright Year	2006
Abstract	Geochronological database considered in the work and characterizing the Anabar collision system in the Northeast Siberian craton includes coordinated results of Sm-Nd and Rb-Sr dating of samples from crustal xenoliths in kimberlites, deep drill holes, and bedrock outcrops. As is inferred, collision developed in three stages dated at 2200–2100, 1940–1760, and 1710–1630 Ma. The age of 2000–1960 Ma is established for substratum of mafic rocks, which probably originated during the lower crust interaction with asthenosphere due to the local collapse of the collision prism. Comparison of Sm-Nd and Rb-Sr isochron dates shows that the system cooling from ≈700 to ≈300°C lasted approximately 300 m.y. with a substantial lag relative to collision metamorphism and granite formation. It is assumed that accretion of the Siberian craton resulted in formation of a giant collision mountainous structure of the Himalayan type that was eroded by 1.65 Ga ago, when accumulation of gently dipping Meso-to Neoproterozoic (Riphean) platform cover commenced.
Starting Page	581
Ending Page	601
Page Count	21
File Format	PDF
ISSN	08695938
Journal	Stratigraphy and Geological Correlation
Volume Number	14
Issue Number	6
e-ISSN	15556263
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2006-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sm-Nd and Rb-Sr isotopic dating Early Precambrian Earth crust accretion collision kimberlite diamond Siberian craton Historical Geology Structural Geology Geophysics/Geodesy Sedimentology Archaeology
Content Type	Text
Resource Type	Article
Subject	Geology Stratigraphy Paleontology

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