trachyte

基本解释

The breccia includes serpentite, gabbro, basaltic trachyandesite, trachyte, and silicalite.
火山角砾岩的角砾由蛇纹石化橄榄岩（蛇纹岩）、辉长岩、玄武质粗面安山岩、粗面岩和硅质岩组成。
While the trace elements content in the trachyte can be up to over 200 times richer than that.
粗面岩属于碱性系列，痕量元素丰度普遍较高，可以达到原始地幔丰度的200倍以上。
The volcanic rocks of the Lower Es3 in Oulituozi region are mainly volcaniclastic rock,basalt and trachyte.
欧利坨子地区沙三下亚段火山岩类型以火山碎屑岩为主,次为玄武岩及粗面岩。
Trachyte reservoir of Liaohe Oilfield are fairly developed,but its homogeneity is poor,thus adding difficulties to the evaluation.
辽河油田粗面岩油气藏比较发育,但储集层的均质性较差,增加了对其评价的难度。
With the Erhai fault zone as a boundary, they are mainly basic and ultrabasic rocks in the east side, trachyte in the west side.
以洱海断裂带为界 ,东侧主要为基性、超基性岩 ,西侧主要为粗面岩。