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通过对东天山觉罗塔格一带晚古生代岩浆岩地质特征、岩石化学特征等系统研究,认为该晚古生代岩浆岩主要由早石炭世至中二叠世的火山岩和侵入岩组成,其形成与康古尔洋向北俯冲有关。早石炭世岩浆岩为康古尔洋初始俯冲而成的钙碱性岛弧火山岩及具有低压、低温特征的高钾钙碱性I型花岗岩;晚石炭世岩浆岩为后碰撞弧火山岩;早二叠世岩浆岩为具有后碰撞弧和板内双重特征的火山岩及高温、高压特征的I型花岗岩;中二叠世发育具有低压、高温特征的高钾钙碱性A型花岗岩。综合前人资料及本文研究成果,初步认为觉罗塔格一带晚古生代经历了俯冲碰撞—碰撞造山—造山后陆内伸展的构造演化过程。
Based on the systematic study on the geological characteristics and petrochemical characteristics of the Late Paleozoic magmatic rocks in the Liangtatag area, East Tianshan, the Late Paleozoic magmatic rocks are mainly composed of volcanic and intrusive rocks from Early Carboniferous to Middle Permian. Gur ocean dive to the north. The Early Carboniferous magmatic rocks were calc-alkaline island arc volcanic rocks initially formed by Kanggul Ocean subduction and high-K calc-alkaline I-type granites with low-pressure and low-temperature characteristics. Late Carboniferous magmatic rocks were post-collisional arc volcanic rocks; The Late Cretaceous magmatic rocks are volcanic rocks with the characteristics of post-impact arc and intraplate, and are characterized by high-temperature and high-pressure type I granites. In the Middle Permian, high-K calc-alkaline A-type granites with low pressure and high temperature are developed. Based on the previous data and the results of this study, the Late Paleozoic in Jueluotage area was initially thought to undergo the tectonic evolution of the subduction collision-collisional orogeny-intracontinental extension after orogenic.