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一、方解石脉岩层中常见有方解石脉分布,地质人员一般将其认为是热液活动的产物。近年来,笔者在西秦岭地区,从事泥盆纪岩相古地理研究,发现这里的方解石脉在某种块状灰岩中十分发育,其它岩层(包括石灰岩)中则不多见。这一现象引起了笔者的注意,并对这些方解石脉的形成产生了怀疑。因此在野外工作中进行了一些观察和研究,现据所获资料将其成因作如下探
First, the calcite veins are commonly found in the distribution of calcite veins, geologists generally think of it as the product of hydrothermal activity. In recent years, the author studied the Devonian lithofacies and paleogeography in the West Qinling area and found that the calcite veins here are well developed in some massive limestone and rare in other rock formations (including limestone). This phenomenon aroused the author’s attention, and cast doubt on the formation of these calcite veins. Therefore, some observations and studies have been carried out in field work. According to the data obtained, the reasons for this are as follows