noun
数据来源:WordNet
Nd isotopic model ages of basement rocks suggested that the crustal age of Ili plate in the north ( 1.9Ga ) is younger than that of the South Tianshan ( STS ) fold belt in the south ( 2.2Ga ) .
本区北部伊犁地块基底岩石的Nd同位素模式年龄约为1.9Ga,南部南天山褶皱带的约为2.2Ga。