METAMORPHOSED VOLCANIC ROCKS IN NORTHWESTERN FUJIAN PROVINCE, CHINA:LITHOGEOCHEMISTRY AND TECTONIC S

来源 :Scientia Geologica Sinica | 被引量 : 0次 | 上传用户:tjh2088
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Rb-Sr and zircon U-Pb isotope studies indicate that the diagenetic age of the metamorphosed volcanic rocks in the northwestern Fujian Province, China, is 536-643 Ma. Systemic studies on petrochemistry, trace element geochemistry and Sr-Nd isotope geochemistry indicate that the diagenetic process of these rocks is the mixture melting of crust and mantle. These volcanic rocks were formed in the Later Sinian-Early Paleozoic island-arc setting, which developed on a basement of mature continent crust. Rb-Sr and zircon U-Pb isotope studies indicate that the diagenetic age of the metamorphosed volcanic rocks in the northwestern Fujian Province, China, is 536-643 Ma. Systemic studies on petrochemistry, trace element geochemistry and Sr-Nd isotope geochemistry indicate that the diagenetic process of these rocks is the mixture melting of crust and mantle. These volcanic rocks were formed in the Later Sinian-Early Paleozoic island-arc setting, which developed on a basement of mature continent crust.
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