1.IntroductionThe Central Asian Orogenic Belt(CAOB)is one of the largestaccretionary orogens on Earth(Jahn et al.,2000;?eng?r et al.,1993;Windley et al.,2007;Xiao et al.,2009).The Bozshakol(also known asBoshekul or Boshchekul)area in central Kazakhstan is located in thewestern part of the CAOB(Fig.1).Its area is characterized by wide-spread early Paleozoic volcanic and intrusive rocks,many of whichhost copper and gold mineralization(Chen et al.,2014;Degtyarev andRyazantsev,2007;Kudryavtsev,1996;Yakubchuk et al.,2012).TheBozshakol deposit contains 4.1 Mt of copper at an average grade of0.31%and 100 t of gold at an average grade of 0.08 g/t(Yakubchuk
et al.,2012).The mineralization occurs in the early Paleozoic tonalite por-phyry dikes and ...
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