暗玄巖 的英文怎麼說

中文拼音 [ànxuányán]
暗玄巖 英文
trap basalt
  • : Ⅰ形容詞1 (光線不足; 黑暗; 暗淡) dark; dim; dull 2 (不顯露的; 秘密的) hidden; secret 3 [書面語...
  • : Ⅰ形容詞1 (黑色) black; dark 2 (深奧) profound; abstruse; recondite 3 (不實在; 靠不住) unrel...
  • : 名詞1. (巖石) rock 2. (巖峰) cliff; crag
  1. Given their oib - type trace element pattern and depleted sr - nd isotop ic composition, the datong alkali basalts are interpreted to be generated within the asthenospheric mantle but at a shallow depth compared to the yangyuan alkali basalts. the datong tholeiitic basalts exhibit low snd values ( 1 - 4 ). their sr - pb and nd - pb isotopic correlations are consistent with a mixing between the depleted mantle and emi - like component

    大同地區第四紀時期同時產出堿性和拉斑,堿性也主要來自於軟流圈地幔,漿起源深度小於陽原樣品;拉斑具有較低的nd ( nd = 1 - 4 ) , pb - nd以及pb - sr同位素相關關系示其可能是dm和型富集地幔( emi )組分之間混合的結果,反映了軟流圈和石圈地幔之間的相互作用,漿起源較淺。
分享友人