【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.,20
【机 构】
：
School of Earth Science & Resources,Chang'an University,Xi'an,710054,China
【出 处】
：
International Workshop on: Ophiolites, Mantle Processes and
论文部分内容阅读
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,situated in the southern CAOB(Fig.1b),including several belts of ophiolitic mélanges(Feng et al.,1989; Zhou et al.,2001; Wang et al.,2003),such as Mayle,Tangbale,Darbut,Karamay,Huguleleng and Kujibai.Oceanic island basalts(OIB)occur in many ophiolitic mélange belts and accretionary complexes,but those geological structures are usually dominated by “classic” ophiolitic units,island/back-arc units and their metamorphosed equivalents.Outcrops of oceanic island basalts,seamounts and plateaus are,as a rule,much smaller in size and easily either missed or erroneously interpreted.The exceptions are the large oceanic plateaus,which can be both subducted or accreted,and consequently they are also of limited extent(e.g.,Kerr,2003).
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