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中—新元古代地层在南乌拉尔海槽中极为发育,地层厚度巨大,几个阶段的构造演化和沉积特征清晰可见。新太古代和下里菲是俄罗斯重要的大型层状铁矿和菱镁矿的宿主地层,中里菲群(元古宙地层)地层厚度极大,伴随了几次沉积旋回,发育了从深海相到大陆缓坡的碳酸盐岩沉积;随着新元古代末次冰期之后,文德系发育了可全球对比的白海动物群(伊迪卡拉动物群)。笔者首次确认了南乌拉尔地区中—新元古代地层3套臼齿构造,其中巴卡尔组(Bakal)碳酸盐岩臼齿构造与碎屑岩地震液化脉互层共生,特别是大量臼齿构造也发育在大型叠层石中。从臼齿构造与碎屑岩液化脉互层的共生特征,说明发育在碳酸盐岩中臼齿构造与地震机理的液化作用有关。该3套臼齿构造与中国华北地台中—新元古代地层中发现的臼齿构造(液化脉)时代大体接近。
The Meso-Neoproterozoic strata developed extremely well in the Southern Ural Trough, with thick strata that clearly show the tectonic evolution and sedimentary features of several stages. Neo-Archean and sub-tri-phenanthrene are host strata of major stratiform iron ore and magnesite in Russia. The strata of the Middle Tribe (Proterozoic strata) are extremely thick with a few depositional cycles and developed from deep-sea facies To the gentle slope of the continental carbonate sediments; with the Neoproterozoic last glacial period, the Wende Department developed a global comparison of the White Sea fauna (Idiacara fauna). The author first confirmed three sets of molars in the Meso-Neoproterozoic strata of the Southern Urals, in which the Bakal carbonate molars are interbedded with the liquefaction veins of the clastic rocks, especially the massive molars Large laminated stone. The symbiosis of the molars structure and the interbedded layers of liquefaction veins of clastic rocks indicates that the molars developed in carbonate rocks are related to the liquefaction of seismic mechanism. The three sets of molars are generally similar to the molars structure (liquefaction veins) found in the Meso-Neoproterozoic strata in North China.