玉门市硅化木基本特征和向光性分析  

Basic Characteristics and Phototropism Analysis of Gansu Yumen Silicified Woods

作　　者：高磊 周洪瑞[2] 王训练[2] 蒋子堃[3] Gao Lei;Zhou Hongrui;Wang Xunlian;Jiang Zikun(Guangzhou Institute of Geological Survey,Guangzhou,Guangdong 510440,China;School of the Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China;Chinese Academy of Geological Sciences,Beijing 100037,China)

机构地区：[1]广州市地质调查院,广东广州510440 [2]中国地质大学地球科学与资源学院,北京100083 [3]中国地质科学院,北京100037

出　　处：《绿色科技》2021年第10期248-250,共3页Journal of Green Science and Technology

基　　金：甘肃玉门国家公园地质景观基础地质研究项目。

摘　　要：指出了甘肃省玉门地质公园内分布着100余株裸露出地表的硅化木,其数目、密集程度在全国都较为少见,具有保存完好、木纹年轮清晰等特点。对玉门硅化木矿物成分和植物学特征进行了分析,确定其为裸子植物,属古松柏纲。通过对公园内原地埋藏硅化木树桩与现代植物年轮宽面方向之间的偏差,对其向光性和板块构造意义进行了探讨。There are more than one hundred silicified woods exposed on the ground in Yumen Geopark,Gansu Province.The number and density of silicified woods are rare in China,and they are well preserved with clear growth rings and grain.In this paper,the mineral composition and botanical characteristics of Yumen silicified woods was analyzed,and it was confirmed that Yumen petrified woods belongs to gymnosperms,and pertains to the class of ancient pines and cypresses.Based on the deviation of the wide plane direction of the growth rings between the buried petrified wood in the park and the modern trees,the phototropism and plate tectonic significance are discussed.

关 键 词：酒西盆地 玉门地质公园 硅化木 向光性 板块漂移和旋转 

分 类 号：P52[天文地球—古生物学与地层学]