Zircon age and occurrence of the Adaatsag ophiolite and Muron shear zone, central Mongolia: constraints on the evolution of the Mongol-Okhotsk ocean, suture and orogen From: Journal of the Geological Society | Date: January 1, 2005| Author: Tomurtogoo, O; Windley, B F; Krà ¶ ner, A; Badarch, G; Liu, D Y | Copyright Geological Society Publishing House Jan 2005. Provided by ProQuest LLC.Copyright information

Abstract:

The Adaatsag ophiolite in eastern Mongolia is situated in the Mongol-Okhotsk suture zone, which extends from central Mongolia through Transbaikalia to the Sea of Okhotsk and separates the Siberian and Amurian (Mongolian) plates. The ophiolite sequence passes upwards from serpentinite mélange and serpentinized dunite and harzburgite, through layered gabbro (with leucogabbro pegmatite dykes), wehrlite and clinopyroxenite, to isotropic gabbro and leucogabbro, sheeted mafic dyke...