| 释义 |
- 1
The bulk of the volcano is basaltic, but the slopes are dotted with cones and lava flows consisting of glassy, silica - rich lavas called dacites. 此火山的主体是玄武岩，但是山坡却点缀著由石英安山岩(一种玻璃质、富含矽的熔岩)形成的熔岩锥和熔岩流。 - 2
The bulk of the volcano is basaltic , but the slopes are dotted with cones and lava flows consisting of glassy , silica - rich lavas called dacites. 此火山的主体是玄武岩，但是山坡却点缀著由石英安山岩（一种玻璃质、富含矽的熔岩）形成的熔岩锥和熔岩流。 - 3
The Mesozoic volcanic rocks in Fenghuadian, Huanghua depression , mainly consist of rhyolites, trachydacites, trachytes and minor trachyandesites and dacites. 黄骅坳陷风化店中生界火山岩油藏的岩石类型主要为粗面英安岩、粗面岩及少量英安岩和粗面安山岩。
|