Early Precambrian
- Early Precambrian的基本解释
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早期前寒武纪
- 更多网络例句与Early Precambrian相关的网络例句 [注：此内容来源于网络，仅供参考]
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Based on major and trace elements and isotope geochemical data, it is inferred that Sandouding suite is formed by magma melting of Late Archeozoic continent tholeiite source, and its geochemical variation is controlled by hornblende fractional crystallization. Besides fractional crystallization, the geochemical variation of Huanglingmiao suite is related to the mixing between dacitic magma and felsic magma. Dalaoling suite is probably derived from early Precambrian volcanics.
根据岩石化学和同位素组成推断，三斗坪岩套的源岩主要是晚太古代大陆拉斑玄武岩，母岩浆相当于英安质，岩套内的成分变化主要受角闪石分离结晶作用控制；黄陵庙岩套除受分离结晶作用影响外，成分变化主要与英安质母岩浆和某种长英质岩浆的混合有关；大老岭岩套的源岩亦为早前寒武纪火山岩。
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Early Precambrian metamorphic complex, composed of khondalite series, BiHb gneiss series, granulite series and metamorphosed plutonic intrusions inside the supracrustal rocks, are well developed in Daqingshan area.
内蒙古大青山地区普遍发育由孔兹岩系、黑云角闪片麻岩系、麻粒岩系和侵位其中的变质深成岩构成的高级变质杂岩。
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As pyrites from Archean black shales worldwide show similar Fe iso- tope features to those from the two Chinese sulfide deposits, the enrichment of light Fe isotopes in early Precambrian ocean is likely to be regional, or even global.
导致早前寒武纪海洋富集Fe轻同位素的原因是海水中大量的Fe被氧化形成了富集Fe重同位素的磁铁矿和赤铁矿。