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清流、宁化泉上地区的震旦系火山岩,系1976年原福建省地质二队二一○分队在宁化一明溪一带进行磷矿普查时首先发现,且作过较详细的研究,曾建立了“旱坑组”等震旦系火山岩层位,引起了不少地质工作者的关注。在此以前,某钨矿外围填图时将这套岩石定为变质长石砂岩、变质含长石石英细砂岩等。宁化幅1/20万区域地质调查报告将它定为变质长石石英细砂岩。1980年该区开始1/5万区调工作以来,在系统地研究前人资料的基础
The Sinian volcanic rocks of the Qingliu and Ninghua springs areas were first discovered when the 2010 Geological Second Team of Fujian Province carried out the phosphate mine survey in the vicinity of Mingxi Stream in Ninghua-Mingxiu area and made a more detailed study. The establishment of the “Dankeng Formation” and other Sinian volcanic formations have aroused the concern of many geological workers. Prior to this, a certain tungsten ore mapping will be set when the peripheral metamorphic feldspar sandstone, metamorphic feldspar quartz sandstone and so on. Ninghua amplitude 1 / 200,000 regional geological survey report it as a metamorphic feldspar quartz sandstone. Since 1980, the area started to work on 1/50000 districts, and has systematically studied the foundation of previous data