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对浙闽地区变质岩Sm-Nd及锆石U-Pb年龄资料研究后认为,浙闽地区存在前寒武纪地壳基底,还可能存在晚太古代古陆核。基底地壳具有幕式增长的特点,经历了2400Ma(早元古代)、1800Ma(中无古代)和1400Ma(中元古代)三个主要的地壳增长时期。
After studying the Sm-Nd and zircon U-Pb age data of metamorphic rocks in Zhejiang-Fujian region, it is considered that there are pre-Cambrian crustal basalts in Zhejiang-Fujian region and late-ancient Archean continental nuclei. The basement crust has the characteristics of episodic growth and has experienced three major crustal growth periods of 2400 Ma (Early Proterozoic), 1800 Ma (Middle and No Ancient) and 1400 Ma (Middle Proterozoic).