ultramafic

基本解釋

Ultramafic hosted hydrothermal system;Southwest Indian Ridge.
超鎂鐵質(zhì)巖系熱液系統(tǒng);
Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.
黑云母一般是鎂鐵質(zhì)及超鎂鐵質(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)于氧化礦物，鉻鐵礦幾乎全部含于侵入體下部的富橄欖石的超鎂鐵質(zhì)巖石中。
The Songsugou peridotite in Shangnan, Shaanxi Province is an important but petrogenetically debated ultramafic massif in the Qinling orogenic belt.
陜西商南縣松樹(shù)溝橄欖巖體是秦嶺造山帶中具重要意義和爭(zhēng)議較大的巖體。
The MA type is further divided into two subtypes of basaltic magma crystallization (BMA) and ultramafic magma crystallization (UMA).
MA型可分為玄武質(zhì)巖漿結(jié)晶(BMA)亞類和超鎂鐵質(zhì)巖漿結(jié)晶(UMA)亞類.