pyroclastic tephra火山碎屑物
tephra a火山灰;火山碎屑
tephra fall火山碎屑降落
fallout tephra空降堆积物
Tephra cone火山锥
tephra deposits火山碎屑沉积
tephra sequences火山灰层
Tephra'便鞋
Geologically, Yanshan granite, Jurassic and Cretaceous terrestrial-pyroclastic tephra sedimentary formation are dominant in southeastern coastal areas of Fujian province. Quaternary sediments are distributed in eastern coastal basins and plains.
福建东南沿海地区基岩以燕山期花岗岩、侏罗纪和白垩纪的陆相碎屑—火山碎屑建造为主,第四纪沉积主要分布于东部沿海花岗岩基底的盆地、平原中。
参考来源 - 福建东南沿海盆地第四纪构造运动模式与动力学成因N（名词） solid matter ejected during a volcanic eruption 火山灰 [美国英语]