广东北部早白垩世粗面岩的成因:Sr-Nd-Pb同位素制约OA北大核心CSCDCSTPCD
Origin of the Early Cretaceous Trachyte in Northern Guangdong Province Constraints of Sr-Nd-Pb Isotopes
广东北部大长沙盆地粗面岩锆石SHRIMP U-Pb年龄为(135.3±1.5) Ma,形成于早白垩世早期,其Sr-Nd-Pb同位素组成为:富放射性成因铅,(206pb/204Pb)i=18.23~18.39,(207pb/204pb )i=15.78~ 15.88,(208Pb/204Pb)i=38.83~39.14,中等的εNd(t)(=-3.35~-3.21)及较高的(87Sr/86Sr)i(=0.706871~ 0.709074);在…查看全部>>
The trachyte in the Dachangsha basin of the northern Guangdong province was formed in the Early Cretaceous (SHRIMP zircon U-Pb dating shows an age of trachyte as 135.3 ± 1.5 Ma). The Sr-Nd-Pb isotopic composition cnaracteristics of trachyte are as follows: enriched in radiogenic lead,(206Pb/204Pb)I= 18.23-18.39,(207Pb/204b), = 15.78-15.88,(208Pb/204Pb)I=38.83~39.14; moderate initial Nd isotopic ratios, eNll(f)=-3.35-3.21; and higher initial Sr isotopic ratio…查看全部>>
项媛馨;巫建华
东华理工大学地球科学学院,抚州,344000东华理工大学地球科学学院,抚州,344000
天文与地球科学
粗面岩Sr-Nd-Pb同位素下地壳部分熔融大长沙盆地
trachyte Sr-Nd-Pb isotopes lower crust partial melting Dachangsha basin
《高校地质学报》 2011 (3)
436-446,11
中国核工业总公司“中国中、新生代铀成矿作用”(中核计2008-74号)项目资助
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