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A sort of iron-manganese nodule devleoping in drowned platform margin

机译:淹没平台边缘发育的一种铁锰结核

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A sort of purplish red iron-manganese nodules was found int he Middle Ordovician Guniutan-Miaopu period limestone, Anhui Province. About their formational environment, there are two different viewpoints: Yue through they were deep-water pelagic deposit and Huang et al. believed they were formed in shallow water tide. We think that these nodules were formed in drowned platform margin beloging to a transitional type between shallow-water and deep-water iron-manganese nodules, and different from shoal-water iron-manganese oolites and pelatic iron-manganese nodules in feature and origin.
机译:在安徽省中奥陶世古牛滩-庙堡时期的石灰岩中发现了一种紫红色的铁锰结核。关于它们的形成环境,有两种不同的观点:越过它们是深水浮游沉积物,而黄等人。相信它们是在浅水潮中形成的。我们认为这些结核是在淹没的台地边缘形成的,形成浅水铁锰结核和深水铁锰结核之间的过渡型,在特征和起源上与浅水铁锰铁矿和球状铁锰结核不同。

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