首页> 外文期刊>Archaeometry >A NEW METHODOLOGY AND CLASSIFICATION SYSTEM FOR DESCRIBING THREE-DIMENSIONAL PARTICLE FORMATS: APPLICATION TO CLASTIC LITHIC PRODUCTS OF ARCHAEOLOGICAL AND GEOLOGICAL ORIGIN
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A NEW METHODOLOGY AND CLASSIFICATION SYSTEM FOR DESCRIBING THREE-DIMENSIONAL PARTICLE FORMATS: APPLICATION TO CLASTIC LITHIC PRODUCTS OF ARCHAEOLOGICAL AND GEOLOGICAL ORIGIN

机译:描述三维粒子格式的新方法和分类系统:在考古和地质起源碎屑岩产品中的应用

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摘要

A new classification system is proposed to describe the volumetric formats of clastic lithic products of geological and archaeological origin. In order to build this operative classification, the rectangular block or cuboid is established as the standard geometric format to represent their three-dimensional format (the X-axis being length or long diameter, the Y-axis being the width or intermediate diameter, and the Z-axis being the thickness or short diameter) on a two-dimensional diagram. To obtain this graph, each absolute coordinate (X, Y, Z) defining the prisms is projected on to an auxiliary plane with a new set of relative coordinates (x, y, z), expressed as the percentage of their sum. The projection generates a triangular diagram on which the indices of elongation and flatness are represented. A geometric transformation converting the triangular diagram into a quadrangular diagram has been produced in order to better represent the scatter points. Then, a double scale is necessary: (i) an absolute scale to quantify the indices, and (ii) a relative scale to calculate where the graphic locus is projected. This new graph also allows us to work with statistical parameters. Finally, two classic examples of applications selected from the literature are shown.
机译:提出了一种新的分类系统来描述地质和考古起源的碎屑岩性产品的体积格式。为了建立此操作分类,将矩形块或长方体建立为表示其三维格式的标准几何格式(X轴为长度或长直径,Y轴为宽度或中间直径,并且Z轴是二维图上的厚度或短直径)。为了获得该图,将定义棱镜的每个绝对坐标(X,Y,Z)投影到具有一组新的相对坐标(x,y,z)的辅助平面上,以相对于它们的总和的百分比表示。投影生成一个三角形图,在该三角形图上表示伸长率和平坦度的指标。为了更好地表示散点,已经进行了将三角图转换为四边形图的几何变换。然后,必须使用双刻度:(i)用于量化指标的绝对刻度,以及(ii)用于计算图形轨迹投影位置的相对刻度。这个新图表还使我们能够处理统计参数。最后,显示了从文献中选择的两个经典应用示例。

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