影像云纹法及GIS在缝合线三维重构中的应用

Application of Shadow Moiré Method and GIS in Three-Dimensional Reconstruction of Stylolities

利用影像云纹法和GIS恢复了天然缝合线的三维形态,通过结果与标本的对比分析,证明了此套技术在实验室小构造分析中的实用性。通过处理缝合面的高程文件得到了各种形态的二维数字剖面,这些剖面更加全面地反映了标本的二维形态信息,且与天然缝合线的相似性较大。基于三维数字信息可以提取各种缝合线特征数据,如沟谷密度、搬运量大小、粗糙度等,这些数据可以反映缝合线在形成过程中的应力状况及物质迁移情况。

Firstly, we restored the three-dimensional morphology of natural stylolities by Shadow Moire method and GIS. Comparing the specimen with our results, it can be proved that this suit of method is practicable in small-structure laboratory analysis. Based on the elevation document of the specimen, we can get various two-dimensional stylolite shapes which contain more comprehensive morphology information of stylolities similar to that of natural ones. And from the three dimensional numerical information, we can get various characteristic data of stylolities such as the gully density, loading amount and roughness, and these data might be useful in analyzing the force condition and mass transmission during the formation of stylolities.