熔巖標 的英文怎麼說
中文拼音 [róngyánbiāo]
熔巖標
英文
lava dart-
However, in the area with strong magma mingling, there are widespread abnormal fabrics, distinguished differences in the idiomophic - textures and the peritectic reaction, poililitic texture, metasomatism among the minerals, metasomatic border, embayment, rimmed structure, abnormal plagioclase zoning, relict fabric as well as the acicular apatite are very common
巖石的異常結構構造十分發育，礦物之間自形程度差異顯著，常見包晶反應、包含結構、交代邊、熔蝕邊、交代蠶食的港灣狀結構構造及交代縫合線、礦物鑲邊、斜長石異常環帶和礦物殘留等，多見指示巖漿混合的標志性礦物針狀磷灰石。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特徵可將其劃分為兩類：一類具有較高而穩定的mgo 、較低的al _ 2o _ 3 、極低的cao ， m f值為8 . 0 ? 8 . 4 ，按標準礦物組合進行分類可定為方輝橄欖巖，且均為fa _ （ 100 ） 、 en _ （ 100 ）的鎂質端元組分；可與世界上一些典型的蛇綠巖套中變質橄欖巖進行對比，代表了原始地幔中等部分熔融作用后殘余物。Such features can be ascribed to lower degrees of partial melting and greater melting depths. in particular, the decoupling between the lowest nag and highest tig tends to indicate residual jadeite during melting process so that na behaved as a moderately compatible element to lower the naao concentration in these rocks. this is consistent with the ree patterns in the high - ti diabases that have the highest ( gd / yb ) cn ratios than other two groups, which suggest a more important role of residual garnet in generation of the primary magmas
運用mgo = 8進行標準化，結合巖石成因理論討論了三大系列輝綠巖的形成相對深度和熔融比例，其中高ti系列的原始巖漿形成深度大，熔融比例小，源區相對最為富集易熔組分；低ti系列的熔融深度最淺，比例最大，源區相對虧損易熔組分；過渡ti系列則介於前兩大系列之間。
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