Age and Magma Sources of the Post-Collisional Gabbroids
of the Kaakhem Magmatic Area, Eastern Tuva:
First ⁴⁰Ar/³⁹Ar and SmNd Data

A. A. Mongush and A. M. Sugorakova

Tuva Institute of Complex Exploration of Natural Resources, Siberian Branch, Russian Academy of Sciences,
ul. Internatsional’naya 117a, Kyzyl, 667007, Russia

e-mail: amongush@inbox.ru

Received June 21, 2011; in final form, October 17, 2012

Keywords: mantle post-collisional magmatism, Late Caledonides, geochronology, Ordovician, Nd isotopy,
geochemistry, Tuva

DOI: 10.1134/S0016702913110049

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