Magmatic Rocks And Their Metallogenic Relationship In Kayakedengtage Area,Qinghai Province

Kayakedengtage, located in Qimantage, western of the Eastern Kunlun Orogenic Belt; theregional magmatic rocks is characterized by frequent activities, span age and wide distribution.This paper is based on Qimantage region Geology and Mineral Survey1:50,000Project,Geochemical Sediment Survey1:200,000Project and Qimantage Region Potential EvaluationProject.By studying the characteristics of magmatic ages, spatial distribution, regional geology andgeochemistry, combined with analysis on tectonic environment, geological conditions formagmatic rocks of different periods and the role in mineralization, metallogenic evolution rules,Analyzeing in detail the area’s new hairstyle deposit metallogenic regularities and ore controllingfactors, determined that mineralization ages are mainly concentrated in the late Triassic(continued into the early Yanshanian), the majority are closely related to the Late Triassic andEarly Jurassic intrusive rocks. The main mineralization types are skarn, hydrothermal andporphyry type. Variscan mineralization is weak, but also exist, basically associated with EarlyPermian intrusive rocks, and mainly skarn and hydrothermal type.Meanwhile a separate units with composition of hornblende diorite and the Late OrdovicianAdatan sequence consisting of diorite and tonalite–granodiorite have been disintegrated andmerged; the Late Devonian and Early Jurassic mafic dyke swarm (veins) have been recorgnizedby the spatial and temporal analysis and isotopic testing; identifing the forming environment ofearly Jurassic fine-grained syenogranite and the main deposit types and metallogenic ages.