火山碎屑岩（pyroclastic rocks）是指火山活动时，由火山爆发作用产生的火山碎屑物质，于火山口附近就地堆积，或在空气或水介质中搬运、降落、沉积、而后固结形成...
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The holocrystalline porphyritic olivine basalts and pyroclastic rocks are the components of Pleistocene to recent volcanic activities.
完整的斑状斑状橄榄石玄武岩和火山碎屑岩是最近火山活动的更新世的组成部分。
The pyroclastic rocks which transit to lava mainly have breccia lava and tuff lava etc.
向熔岩过渡的火山碎屑岩主要为角砾熔岩和凝灰熔岩等。
Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.
火山碎屑岩是介于溶岩和沈积岩之间的过渡类型岩石，岩类复杂。
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