volcanic debris meaning in English
火山灰
火山岩屑
Examples
- The sedimentary facies show a depositional evolution from the deep - water sediments through shallow - water sediments to the continental sediments , including alluvial fan , river , lake , delta ( tide - dominated ) , barrier coast , shallow sea , deep sea and volcanic debris flow deposits
在沉积相上，经历了从深水沉积到浅水直至陆相沉积的演变，发育有冲积扇、河流、湖泊、三角洲（潮汐） 、障壁海岸、浅海、深海和火山碎屑流沉积。 - 1 . the framework of mesozoic strata in the north margin of the dabie orogenic belt was reestablished according to the discovery of the tuff beds and volcanic debris in zhougongshan and fenghaungtai formations , along with their isotope ages and the correlations of sedimentary facies and heavy minerals
在周公山组中在凤凰台组中发现了火山凝灰岩层利火山岩碎屑，结合同位素年代学研究以及沉积相和重矿物对比，重新厘定了大别造山带北缘中生代地层的格架。