单词 | 叠层 |
释义 | 〔stromatolite〕A widely distributed sedimentary structure consisting of laminated carbonate or silicate rocks, produced over geologic time by the trapping, binding, or precipitating of sediment by groups of microorganisms, primarily cyanobacteria.叠层:分布广泛的叠层结构,由碳酸盐和硅酸盐的岩石叠层组成,经过地理年代由微生物群,最初为藻青菌,沉淀物的分离,结合或沉降形成 |
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