浙江新昌硅化木赋存地层岩石学与古生态环境研究

在新昌早白垩世盆地中存在丰富的硅化木，它们是重要而又典型的古植物地质遗迹，新昌硅化木赋存的地层为早白垩世馆头组，其岩石类型包括砾岩、岩屑长石砂岩／长石岩屑砂岩、粘土岩，还有少量的礁灰岩和泥灰岩。岩石学研究表明，它们形成于干燥的快速堆积的山间盆地，属河湖相沉积。新昌硅化木为南洋杉型木，生活在热带－亚热带的气候条件。结合硅化木特征与地层岩石学研究，探讨了新昌硅化木形成的古生态环境。

Study on the petrology of strata bearing petrified wood and the palaeoecology in Xinchang,Zhejiang Province

A lot of petrified woods has been preserved in Xinchang Basin, Zhejiang Province. They are important and typical palaeoplant geological remains. The strata bearing petrified woods are Guantou Formation, belonging to the Early Cretaceous in age. The rock types include conglomerate,sandstone, clay rock and so on. Petrology study shows that they formed in a dry and fast accumulated intermountain basin. The sedimentary facies are river and lake facies. Xinchang petrified woods are Araucarioxylon Xinchanggense, forming in tropical subtropical environments. The petrology studies on stratum together with the characteristic of Xinchang petrified wood, the palaeoecologic environment of Xinchang petrified wood Araucarioxylon forming is analysed.