| 释义 |
1 ?火山块 ...形不 规则，多孔 火山弹（ volcanic bomb）粒径＞50mm，各种炮弹形， 有冷凝收缩 裂纹，多孔 火山块（volcanic block）粒径＞50mm，棱角状 有各种火山碎屑物堆积并固结形成的岩石称火山碎屑岩 主要由火山灰组成的称凝灰岩 主要由火山砾和火... 2 ?火山地块 ... volcanic explosion 火山爆发 volcanic block 火山地块,火山块... volcanic earthquake 火山地震 ... 3 [地质]?火山块体 ... 火山口锥 crater cone 火山块体 volcanic block 火山雷雨 volcanic thunderstorm ... 4 ?火成岩块体 ... 安山岩块体 andesite block 火成岩块体 volcanic block 滑塌灰岩块体 calcolistolith ...
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Volcanic ash, lapilli, block and bombs. - 2
Based on volcanic activities and tectonic evolution, it is suggested that the tilted fault block, sliding structures in extensional setting should be developed in Cretaceous to Cenozoic age. 结合区域火山活动和构造演化认为，该滑动构造为伸展背景下的掀斜断块型，其滑动时间为白垩纪—新生代。 - 3
The volcanic activities have relations to the heat-flow upwelling, crust thinning, upper mantle and lower crust melting, and upward movement of the melt materials along the block boundaries. 火山活动与热流上涌、地壳拉伸减薄、上地幔及下地壳物质熔融并沿块体边界向浅部上移有关。
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