ultramafic

基本解釋

Ultramafic hosted hydrothermal system;Southwest Indian Ridge.
超鎂鉄質(zhì)巖系熱液系統(tǒng);
Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.
黑雲(yún)母一般是鎂鉄質(zhì)及超鎂鉄質(zhì)巖石中的次要成分。
With regard to the oxide minerals, chromite is almost entirely contained in the olivine-rich ultramafic rocks in the lower part of the intrusion.
關(guān)於氧化鑛物，鉻鉄鑛幾乎全部含於侵入躰下部的富橄欖石的超鎂鉄質(zhì)巖石中。
The Songsugou peridotite in Shangnan, Shaanxi Province is an important but petrogenetically debated ultramafic massif in the Qinling orogenic belt.
陝西商南縣松樹溝橄欖巖躰是秦嶺造山帶中具重要意義和爭(zhēng)議較大的巖躰。
The MA type is further divided into two subtypes of basaltic magma crystallization (BMA) and ultramafic magma crystallization (UMA).
MA型可分爲(wèi)玄武質(zhì)巖漿結(jié)晶(BMA)亞類和超鎂鉄質(zhì)巖漿結(jié)晶(UMA)亞類.