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以东天山土屋-延东斑岩铜矿田为研究对象,在总结前人研究资料及进行针对性野外地质调查基础上,通过土屋-延东斑岩铜矿田成矿地质特征综合分析,对成矿构造背景、相关岩浆活动、围岩、成矿物质来源及成矿流体等进行探讨,获得初步认识.土屋-延东斑岩铜矿田主要形成于聚合板块活动时期陆缘构造岩浆活动带,与造山带汇聚阶段俯冲-碰撞作用有关,受区内EW向基底断裂及衍生线型构造控制.该矿田围岩为企鹅山群火山岩、火山碎屑岩及碎屑岩,形成于俯冲-碰撞阶段,具良好封闭条件,属不同构造环境.含矿岩石主要是斜长花岗斑岩和基性火山岩及凝灰岩(土屋矿床).斜长花岗斑岩含矿性较高,具埃达克岩和俯冲带“I”型花岗岩特征,为整个觉罗塔格北带花岗岩链的一部分,主要由大洋玄武岩在俯冲过程中部分熔融而成.该斑岩体是较富钠质、多期次、高侵位小岩体,成矿物质来源具多源性和多期次成矿特点.
Taking the Tuwu-Yandong porphyry copper orefield in the east of Tianshan Mountain as the research object, based on the summary of previous research data and the targeted field geological survey, through the comprehensive analysis of the mineralization geological characteristics of Tuwu-Yandong porphyry copper ore field, Metallogenic tectonic setting, related magmatism, surrounding rock, sources of metallogenic materials and ore-forming fluid, etc. The Tuwu-Yandong porphyry copper ore field is mainly formed in the marginal tectonic magmatic activity zone , Which is related to the subduction-collision of orogenic belt convergence stage and is controlled by EW-trending basal faults and derived linear structure in the area.The surrounding rock of this orefield is volcanic rocks, pyroclastic rocks and clastic rocks of Penguashan Group, formed in the subduction- Collision stage, with good sealing conditions, belong to different tectonic setting.The ore-bearing rocks are mainly plagioclase granite porphyry and basic volcanic rock and tuff (Tuwu deposit) .The plagioclase granite porphyry is high in ore-bearing, The karst and subduction zones are characterized by “I” type granites, which are part of the granite chain in the northern North Jueluotage and are mainly composed of partial melting of oceanic basalts during the subduction process. The porphyry bodies are relatively richer in sodium, Multi-stage, high emplacement small rock mass , Source of metallogenic material with multi-source and multi-stage metallogenic characteristics.