CAJ | 학술논문

黄山南岩体位于东天山北部的土墩-黄山-图拉尔根镁铁-超镁铁质岩带中段，受康古尔塔格韧性剪切带控制，由二辉橄榄岩、橄榄二辉岩、辉长苏长岩、角闪辉长岩、闪长岩组成。主要造岩矿物结晶顺序为橄榄石、古铜辉石、单斜辉石/斜长石、角闪石，主要发生单斜辉石、古铜辉石和斜长石的分离结晶作用，斜长石发生较弱的堆晶作用。二辉橄榄岩、橄榄二辉岩中橄榄石Fo=79.76~81.02，利用最高Fo含量的橄榄石成分计算得到黄山南岩体原生岩浆MgO含量为12.6%。单斜辉石晶体化学以及斜长石牌号等说明岩石属拉斑玄武岩系列。源区富水可能是东天山后碰撞伸展环境下，交代型地幔减压熔融的结果，源岩是上地幔石榴石二辉橄榄岩。原生岩浆早期在深部发生硫化物的熔离及分异程度较低是黄山南岩体含矿性较差的主要原因。
황산남암체위우동천산북부적토돈-황산-도랍이근미철-초미철질암대중단，수강고이탑격인성전절대공제，유이휘감람암、감람이휘암、휘장소장암、각섬휘장암、섬장암조성。주요조암광물결정순서위감람석、고동휘석、단사휘석/사장석、각섬석，주요발생단사휘석、고동휘석화사장석적분리결정작용，사장석발생교약적퇴정작용。이휘감람암、감람이휘암중감람석Fo=79.76~81.02，이용최고Fo함량적감람석성분계산득도황산남암체원생암장MgO함량위12.6%。단사휘석정체화학이급사장석패호등설명암석속랍반현무암계렬。원구부수가능시동천산후팽당신전배경하，교대형지만감압용융적결과，원암시상지만석류석이휘감람암。원생암장조기재심부발생류화물적용리급분이정도교저시황산남암체함광성교차적주요원인。
Controlled by the Kangurtag-ductile sheer zone,the Huangshannan intrusion is located in the central segment of Tudun-Huangshan-Tulaergen mafic-ultramafic rock belt,the northern section of the East Tianshan.The intrusion is composed of lherzolite,olivine ebsterite,gabbronorite, hornblende gabbro,diorite.The crystallization order of main miner-als is olivine,bronzite, monoclinic pyroxene,plagioclase,hornblende.The magma was experienced fractional Crystalliza-tion of clinopyroxene,bronzite and plagioclase which underwent slight accumulation. The Fo values of olivine in lherzo-lite and olivine websterite are 79.76~81.02,and the MgO of the primary magma is 12.6%calculated by the maximum Fo. The crystal chemistry of monoclinic pyroxene and the An value of plagioclase indicate primary magma belongs to the tholeiitic series. Source area has the characteristics of rich water,resulting from decompression melting of the metasoma-tism type mantle after the collision environment,and source rock is perhaps garnet lherzolite.It is the main reason for the poor-Cu,Ni that the sulfide segregation before the crystallization and the lower degree of magmatic differentiation.