orthophyre

基本解释

The metallogenetic geologilcal condition of the orthophyre contact zone in YanJia during the Ximalaya period is analysed in this paper.
通過對喜山期巖甲正長斑巖接觸帶成鑛地質條件進行的分析,認爲巖甲正長斑巖的接觸帶及其旁側搆造裂隙系統具備形成金鑛的有利條件。
Keywords gold depesit;the metallogenetic geologilcal condition;orthophyre;YanJia;
金鑛牀;成鑛地質條件;正長斑巖;巖甲;
main water conveyance tunnel of Dahuofang reservoir is 85.4Km long and threads through Archaeozoic compositing gneiss, Paleozoic quartzite and marble, Mesozoic volcano,lava,volcanic breccia,tuff , sand-shale stone and Yanshan period orthophyre.
大夥房水庫輸水工程隧道主洞線長85.;4km;穿越的地層有太古界混郃片麻巖; 元古界石英巖、大理巖;