The REE distribution pattern of the Xihu lake is similar to that of andesite. 西湖沉积物稀土分布模式与安山岩相似。
Parental magmas are somilar, in composition, to that of high-Al basalt and( or) basaltic andesite. 原始岩浆的成分类似于高铝玄武岩和()玄武质安山岩。
The pyroclastic rock fragments comprise quartzite, schist, gneiss, basalt, andesite, rhyolite and quartz. 火成岩的碎块成分主要为石英岩、岩、麻岩、武岩、山岩和流纹岩.
andesite
[ noun ] a dark grey volcanic rock <noun.substance>
Andesite \An"des*ite\, n. (Min.) An eruptive rock allied to trachyte, consisting essentially of a triclinic feldspar, with pyroxene, hornblende, or hypersthene.