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对东焦式磷矿(和与之相当层位的磷矿)的时代有两种看法。一种认为,分布在太行山的这个含磷岩系是震旦亚界的产物;另一种认为,它属滹沱群范畴。近来,王启超等把这一含磷岩系建为东焦群,归入滹沱超群内部。对于含磷的嵩山群、榆树砬子群、大罗圈河群等的时代,也有不同认识。另外,对这套含磷岩系或磷块岩的成因更有多种不同见解。有的认为是冰碛物,有的认为是海相沉积,有的认为其中磷块岩(如曲阳)是次生富集结果,有的则认为它是热液成因,凡此等等。 根据对太行山等地的野外观测和有关资料的分析,我们认为,分布在各地的这个含磷岩系彼此间可以对比,为滹沱群内部的产物,系沉积成因。
There are two perceptions of the age of the East coke type phosphate rock (and the equivalent strata of phosphate rock). One thinks that this phosphorus-bearing rock series distributed in the Taihang Mountains is the product of the Sinian sub-region and the other is considered to belong to the Hutuo Group. Recently, Wang Qichao et al. Built this phosphorus-bearing rock series as a group of eastern coke and belongs to the superb internal. There is also a different understanding of the era of the Songshan group, the elm clam group, the Daluohe river group, etc. that contain phosphorus. In addition, there are many different opinions on the causes of the phosphorus-bearing rock or phosphorite. Some think it is a moraine, some think it is a marine sediment, while others think that the phosphorous lump (such as Quyang) is a secondary enrichment result, while others think it is a hydrothermal genesis, and so on. Based on the field observations and relevant data analysis of the Taihang Mountains, we believe that this phosphorus-bearing rock series distributed around each other can be compared with each other, which is the product of the Hutuo Group and the sedimentary genesis.