根据这些玻璃质微球粒的物理、表面结构构造及常量元素等特征，可认为是微玻璃陨石。
These spherulites are identified as glassy microtektites by their surficial texture, physical and optical properties, and common element contents.
在黄河三角洲新识别出6种冰冻沉积构造：冰劈裂缝、冰成滑痕、冰塌裂缝、冰成球粒、冰蚀波痕和冰位痕。
Six sedimentary structures, ice split seams, ice slid marks, ice collapsed seams, ice induced pellets, ice eroded ripple marks and ice level marks, are newly found in Yellow River delta.
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