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基底杂岩
basement complex
fundamental complex
fundamental complex
- 康定杂岩以往被认为是扬子地块太古宇的基底，但近年来的同位素年龄测定结果表明其并不是形成于太古宙。
The complex was traditionally considered as the Archean basement of the Yangtze Block, but recent isotopic dating results indicate that it was not formed in Archean. - 不少学者用变质核杂岩模式解释豫西后造山阶段的基底隆起和与之相伴的盆岭构造的构造格局。
Using metamorphic core complex (MCC) models, many geologists interpret the tectonic framework featuring the basement dome and the basin-and-range tectonics in western Henan in the postorogenic stage. - 下岩带和过渡带的古铜辉岩可与斯蒂尔·沃特杂岩的基底岩带相比。
The lower zone and the bronzite of the transition zone may be compared with the basal zone of the still-water complex.
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