例句與用法

1. Ultramafic rock fragments , which almost is altered to ophite , distributed in structural zone and displayed structural lens . so far , 9 fragments were discovered and mapped in nujinshan and bujing area ultramafic rock can be divided two kinds according to it ' s geochemical characteristics . one can be correlated with metaperidotite , which represented residual part that primary pyrolite underwent moderate partial melting , from some representative ophiolite melange in the world
   按超鎂鐵巖類的地球化學(xué)特征可將其劃分為兩類：一類具有較高而穩(wěn)定的mgo 、較低的al _ 2o _ 3 、極低的cao ， m f值為8 . 0 ? 8 . 4 ，按標(biāo)準(zhǔn)礦物組合進(jìn)行分類可定為方輝橄欖巖，且均為fa _ ( 100 ) 、 en _ ( 100 )的鎂質(zhì)端元組分；可與世界上一些典型的蛇綠巖套中變質(zhì)橄欖巖進(jìn)行對(duì)比，代表了原始地幔中等部分熔融作用后殘余物。