| 湖北清江画面石图案的纹理类型及其地质成因 |
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| 引用本文： | 宋芳,牛志军,陈荣,杨博.湖北清江画面石图案的纹理类型及其地质成因[J].地质科学译丛,2014(5):9-16. |
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| 作者姓名： | 宋芳 牛志军 陈荣 杨博 |
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| 作者单位： | 武汉地质调查中心,湖北武汉430205 |
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| 基金项目： | 中国地质调查局地质矿产调查评价专项项目（编号：12120113012200,2120114070201）
本文写作过程中得到了武汉地质调查中心李福林、刘浩助理研究员的帮助,承蒙黄慧兰高级工程师对光/薄片鉴定进行指导,以及杨小丽高级工程师协助完成样品化学成分分析,中国地质大学（武汉）皮道会副教授、王敏芳副教授给予了热情帮助;工作过程得到中国观赏石协会邱沛喆老师指导;审稿专家对本文提出了修改意见;在此一并表示衷心感谢. |
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| 摘 要： | 清江画面石是近二十年来出现的一种新的观赏石石种,原石主要为中泥盆统云台观组灰白色石英砂岩.清江画面石具有观赏价值的关键因素是构成画面的各类图案.本文将画面石图案的纹理类型划分为三种类型——线型、条带型和梳型,并对每种类型进行了详细描述.在野外调查基础上,通过岩石特征、微观结构构造、地球化学特征等综合对比分析,对三种类型的清江画面石图案的地质成因进行初步讨论,认为线型（即裂隙）的形成可能与燕山期或之后区域构造活动有关,条带型（即层理）形成于泥盆纪的原生沉积构造,而梳型则可能是由于外来物质在成岩期后沿着层理面或纹层面向下渗流而成,推测形成于燕山期之前,但需进一步研究确定.三种图案中的不同颜色,是由含有铁锰质氧化物的地下水或地表径流水等沿裂隙、层理面或渗流面浸染或部分交代填隙物而成,在现代河流下切作用下,崩落入水,经过流水搬运、冲刷,最终形成了清江画面石.
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| 关 键 词： | 画面石 观赏石 图案 纹理类型 地质成因 湖北清江 |
Discussion on Texture Types and Geologic Origin of Stone Screen from Qingjiang,Hubei Province |
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| Authors: | SONG Fang NIU Zhijun CHEN Rong YANG Bo |
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| Institution: | (Wuhan Center of China Geological Survey, Wuhan 430205, China) |
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| Abstract: | Stone screen from Qingjiang has been a new kind of view stones in recent 20 years, which originates from grey quartz sandstone of Middle Devonian Yuntaiguan Formation. The textures on the surface of the stone screen from Qingjiang are the key factor of its ornamental value, and there are three kinds, including linear texture （fractures）, banded texture （bed- dings） and comb texture （the infiltrating texture with convex top surface）. Through the field work and synthesizing petrology features, microscopic texture and geochemistry fea- tures, the article focuses on the geologic origins of the textures. Fractures are taken shape from the faults formed during or after Yanshan movement. Beddings originated at the same time of Yuntaiguan Formation sedimentation. Comb texture is probably caused by vadose foreign matter along the bedding surface during the late diagenesis, before Yanshan move- ment, though it needs further proof. The fuchsia or grayish-green bands of the three kinds of textures are caused by irony or manganic matter carrying by surface and ground water pre-cipitating in porosity. During neotectonics period, the original rock was put to the river and became stone screen from Qingjiang by washing and erosion. |
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| Keywords: | stone screen view stone texture type geologic origin Qingiiang Hubei Province |
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