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在亿年前的中生代白垩纪时期,永康盆地气候湿润,森林茂密,植物丰盛。由于地壳的裂变,地层的升降及火山运动等原因,使松树等原始林木被长期埋藏于地下,经二氧化硅的作用,林木逐渐硅化成岩石,地质学上称为硅化木,当地百姓称其为松化石或松石。在永康世代流传着关于“道仙马自然指松化石”的古老传说:唐建中元年(公元780年)八月十五日,仙人马自然自桐霍山回永康城北延真观,指庭前松曰:“此松已三千年矣,不能化龙,当化为石。”言毕,顿时风雷大作,古松震作数段,皆成石。古代“指松化石”和“降龙木”的典故就出于此。
In the Mesozoic Cretaceous years ago, the Yongkang Basin was humid, densely populated with rich forests. Because of crustal fission, strata movements and volcanic movements and other reasons, so that the original trees such as pine trees are buried in the ground for a long time, by the role of silica, trees gradually silicified into rocks, geologically known as silicified wood, local people call it To loose fossil or turquoise. The legend of the immortal horse refers to the loose fossil “in the ancient legend of Yongkang: The first year of Tang Jianzhong (AD 780) On August 15, the immortal horse naturally returned to Yongkang City from Tonghuashan to the north, Pine said: ”This pine has three thousand years, can not be Dragon, when turned into stone. “ Said the end, suddenly thunder masterpiece, Gusong Zhen for a few paragraphs, all into a stone. Ancient ”refers to the loose fossils“ and ”downgraded wood" an allusion out of this.