对“原地重熔—中国东南地洼区中生代花岗岩的重要形成途径”一文的几点商榷意见

COMMENT ON “REMELTING-IN-SITU:A NEW MODLE FOR THE GENESIS OF THE MESOZOIC GRANITOIDS IN THE SOUTHEAST CHINA DIWA REGION” BY CHEN GUONENG

本文对“原地重熔——中国东南地洼区中生代花岗岩的重要形成途径”一文的若干结论及其解释,提出一些商榷意见。Sr同位素是判别花岗岩物质来源的重要示踪剂之一。南岭地区部分中生代花岗岩物质来源与地层并没有直接的成因关系,“原地重熔”模式需要进一步用同位素资料加以研究论证。

Several comments are presented in this paper on 'Remelting-in-situ: A new model for the genesis of the Mesozoic granitoids in the southeast China Diwa Region'. As one of the most important isotopic tracers, Sr isotope is widely used to study the source material of granitoids. It was demonstrated that a portion of Mesozoic grani- toidsin Nanling Region were not derived directly from their wall-rock strata. Thus, the model of 'Remelting-in-situ' for the genesis of the granitoids in this region needs further demonstrated, specially using isotope systimatics.