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区域变质作用、韧性剪切作用和超高压变质作用为SiO2富集创造条件,印支期-燕山期的构造活动为石英脉富集定位创造构造环境。东海群地层、韧性剪切带、超高压变质带为石英脉的形成提供了SiO2物质来源。
Regional metamorphism, ductile shear and ultrahigh-pressure metamorphism create the conditions for SiO2 enrichment. The Indosinian-Yanshanian tectonic activity created a tectonic environment for enrichment of quartz veins. The East China Sea Group strata, ductile shear zone and UHP metamorphic belt provide SiO2 source for the formation of quartz veins.