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哈尔里克山西段早志留世二长花岗岩和正长花岗岩呈北西西向带状展布,侵入奥陶系塔水组(O_(1-2)t),LA-ICP-MS锆石U-Pb年龄为438.8±2.3~435.8±3.1 Ma。岩石高硅(SiO_2含量73.0%~77.8%)、富钾(K_2O含量3.31%~4.26%)、低镁(MgO含量0.03%~0.59%),铝饱和指数A/CNK值1.02~1.08,属高钾钙碱性弱过铝质岩石。二长花岗岩轻重稀土分馏显著,Eu异常中等,亏损Nb、Ta、Ti、P,富集Rb、Ba、K,表现为分异的I型花岗岩特征,源区为基性下地壳;正长花岗岩强烈亏损Eu、P、Ti、Sr,不同程度富集Rb、K、Zr、Hf,表现为A型花岗岩特征,其源区为缺水的浅部长英质地壳。结合区域地层不整合资料,认为东准噶尔地区早志留世为后碰撞环境而非岛弧带,后碰撞软流圈上涌带来的热熔融准噶尔年轻地壳形成了岩性丰富的东准噶尔志留纪后碰撞岩浆岩组合。
The Early Silurian monzonitic granite and the syenite granite in the western part of Harbin-Erli mountain range from northwest to west, and intruded into the Ordovician Tarim water group (O_ (1-2) t), LA-ICP-MS zircon U-Pb The age ranged from 438.8 ± 2.3 to 435.8 ± 3.1 Ma. High silicon (SiO 2 content 73.0% -77.8%), potassium (K_2O 3.31% -4.26%), low magnesium (MgO 0.03% -0.59%) and aluminum saturation index A / CNK 1.02-1.08 Potassium calcium Alkaline weaker than aluminum rock. The fractional light and heavy rare earths in the monzonitic granite are fractionally fractionized, and the Eu anomaly is moderately depleted in Nb, Ta, Ti and P, enriched in Rb, Ba and K and characterized by a distinct type I granite characterized by a basal lower crust in the source zone; Strong depletion of Eu, P, Ti, Sr, enriched in different degrees of Rb, K, Zr, Hf, characterized by A-type granite features, the source area of shallow watery shallow quartz crust. According to the unconformity information of the regional strata, the Early Junggar area in East Junggar was considered as the post-collision environment rather than the island arc zone. The young Junggar crust, which was brought by the upwelling of the post-collision asthenosphere, formed a lithologically rich East Junggar Silurian Post-collisional magmatic rock assemblage.