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单词 Dalslandian
释义
Dalslandian

Geology and Earth Sciences
  • A stage of the Middle–Upper Proterozoic, from about 1600–650 Ma ago, and equivalent to the Jotnian (Van Eysinga, 1975). The name is not used in the 2004 revised timescale of the Int. Commission on Stratigraphy.


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