Rock fragments have been found in fossils pummeled by the vast amounts of material thrown into the atmosphere by the asteroid's massive impact.
化石中发现的岩石碎片受到了大量物质的撞击作用,撞击的物质是因小行星大规模冲击作用而甩进大气层内的物质。
单词 | Rock fragment |
释义 |
Rock fragment
原声例句
BBC 听力 2019年4月合集 Rock fragments have been found in fossils pummeled by the vast amounts of material thrown into the atmosphere by the asteroid's massive impact. 化石中发现的岩石碎片受到了大量物质的撞击作用,撞击的物质是因小行星大规模冲击作用而甩进大气层内的物质。 剑桥雅思阅读 A violent eruption can blow the top few kilometers off a mountain, scatter fine ash practically all over the globe and hurl rock fragments into the stratosphere to darken the skies a continent away. 强烈的火山喷发可以把几千米的山顶喷开,把灰尘颗粒抛向世界各地,把碎石抛向平流层,使得另一个大陆的天空一片黑暗。
英语百科
Rock fragment![]() A rock fragment, in sedimentary geology, is a sand-sized particle or sand grain that is made up of multiple grains that are connected on the grain scale. These can include grains which are sand-sized themselves (a granitic rock fragment), or finer-grained materials (shale fragments). This definition is used for QFR ternary diagrams, provenance analysis, and in the Folk classification scheme, mainly in sandstones. |
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