Its age determined by Rb-Sr isochron is 306 Ma , suggesting that it was formed at Hercynian.

  • 据Rb -Sr 等时线测定,其年令值为306Ma, 说明它形成于海西期.

  • 互联网摘选 2025-01-18 15:34:13

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句