摘要
产于湖北清江流域泥盆纪云台观组的清江石因其独特"形、质、色、纹、韵"而在国内观赏石中占据重要地位,具有丰富的观赏价值和经济价值。艳丽斑斓的色彩与丰富灵动的纹理图案成就了清江石之美。清江石以紫、红、绿、灰白为主,色彩差异由沉积时期和成岩期Fe^(2+)、Fe^(3+)含量变化所决定,成岩期后的铁质浸柒使之进一步明显。清江画面石的纹理主要分为线型、条带型、梳型和斑块型等四种,一种或多种纹理的随机组合构成了清江画面石的美丽图案。线型纹理主要为生物扰动或铁质浸染充填成因;条带型纹理是板状交错层理、楔状交错层理、平行层理、沙纹层理等沉积构造的呈现;梳型纹理主要是碟状构造、沙纹层理、铁质浸染充填的表现;斑块型纹理为成岩期后铁锰质浸柒充填的结果。
The Qingjiang stone from Devonian Yuntaiguan Formation in Qingjiang River of Hubei Province has famous ornamental value and economic value for the shape, character, colour, stripe and charm, which takes an important position in the domestic ornamental stones. The beautify of the Qingjiang stone is due to the vivid texture pattern and gorgeous colors. Qingjiang stone is dominated by purple, red, green and gray.The color difference is determined by the change of Fe^2＋, Fe^3＋ content in sedimentary and diagenetic stage,and the iron leaching after diagenetic period makes it more obvious. Here, four kinds of stone screen are recognized, including linear texture, banded texture, comb texture and plaque texture. The random combination of the textures mentioned above contributes to the beautiful pattern. However, the geologic genesis of the four textures is different. The linear texture was mainly caused by bioturbation or the ferruginous infiltration. The banded texture was the presentation of the tabular corss-bedding, wedge-shaped cross-bedding, parallel bedding, or ripple bedding. The comb texture was taken shape from the dish structure, ripple bedding, or the ferruginous infiltration. The plaque texture was the result of the ferruginous and manganic infiltration after the diagenesis.
作者
赵雨溪
胡昆
ZHAO Yu-Xi;HU Kun(Energy institute of Chengdu University of Technology,chengdu,610059;Institute of Geological Survey,China University of Geosciences,Wuhan,430074)
出处
《华南地质与矿产》
CAS
2018年第1期59-64,共6页
Geology and Mineral Resources of South China
基金
中国地质调查局"鄂东-湘东北地区地质矿产调查(中国地质科学院郑州矿产综合利用研究所)"(DD20179162)项目资助
关键词
清江画面石
纹理图案
沉积构造
云台观组
清江流域
Qingjiang Stone screen
vivid texture
sedimentary structure
Yuntaiguan Formation
QingjiangRiver
