trachyte

基本解释

The breccia includes serpentite, gabbro, basaltic trachyandesite, trachyte, and silicalite.
火山角礫巖的角礫由蛇紋石化橄欖巖（蛇紋巖）、煇長巖、玄武質粗麪安山巖、粗麪巖和矽質巖組成。
While the trace elements content in the trachyte can be up to over 200 times richer than that.
粗麪巖屬於堿性系列，痕量元素豐度普遍較高，可以達到原始地幔豐度的200倍以上。
The volcanic rocks of the Lower Es3 in Oulituozi region are mainly volcaniclastic rock,basalt and trachyte.
歐利坨子地區沙三下亞段火山巖類型以火山碎屑巖爲主,次爲玄武巖及粗麪巖。
Trachyte reservoir of Liaohe Oilfield are fairly developed,but its homogeneity is poor,thus adding difficulties to the evaluation.
遼河油田粗麪巖油氣藏比較發育,但儲集層的均質性較差,增加了對其評價的難度。
With the Erhai fault zone as a boundary, they are mainly basic and ultrabasic rocks in the east side, trachyte in the west side.
以洱海斷裂帶爲界 ,東側主要爲基性、超基性巖 ,西側主要爲粗麪巖。