Oceanic Island Basalts from the Darbut and Karamay Ophiolitic Mélange in West Junggar(NW China): Product of a Middle Devonian Mantle Plume?

摘要

The Central Asian Orogenic Belt(CAOB)is an immense accretionary orogen and is an important site of Phanerozoic crustal growth(Fig.1a;Seng?r et al.,1993;Jahn,2004;Windley et al.,2007;Xiao et al.,2008;Safonova and Santosh,2014).The West Junggar。