癤uanlong Style” ironstone formation is an Early middle proterozoic reniform ironstone and oolitic ironstone formation which is one of the earliest ironstone discovered on the earth.
肾状铁岩（叠层石）在生物和胶体化学共同作用下形成于滩后低能带；鲕状铁岩在物理搅动和胶体化学联合作用下形成于高能浅
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