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近年有许多地质工作者将我省小秦岭地区的太华群定为太古代绿岩带。因小秦岭太华群中蕴藏着丰富的金矿资源,故又将金矿床与太古代绿岩带联系起来。笔者根据野外观察与室内研究成果,对小秦岭太华群是太古代绿岩带的论点提出质疑,并希望进一步探讨。一、太古代绿岩带浅释太古代绿岩带,《地质辞典》解释为:“是发育在太古宙克拉通范围内的变质火山岩和沉积岩的特殊组合。……平面形态呈长条状或树枝状,剖面形态一般呈向斜状。规模不等,一般长几十公里,宽几公里,大者断续延伸达七百公里以上。地层由独特的三位一体的岩石组
In recent years, many geologists have identified Taihua Group in the small Qinling area of the province as the Archean greenstone belt. Due to the small Qinling Taihua group is rich in gold resources, so in turn the gold deposits and the Archean green belt associated. Based on the field observations and indoor research results, the author questions the Taihua group of the Qinling Mountains, which is an Archean greenstone belt, and hopes to further explore. First, the Archean greenstone belt shallow interpretation of the Archean greenstone belt, “Geological Dictionary” is interpreted as: "is a special combination of metamorphic volcanic rocks and sedimentary rocks developed in the Archean Craton range ... ... planar shape was elongated or Dendritic, cross-sectional shape is generally oblique. Scale ranging from the general length of tens of kilometers, a few kilometers wide, intermittent extension of more than seven hundred kilometers above the formation by the unique Trinity Rock Group