Raw data files of X-ray diffraction analysis of the clay fraction from sediment core PS1786-1

Format of files is text, two tab-delimited columns: 1. Angle of goniometer, 2. Counts. Samples were measured with a Cobalt K-alpha bulb in goniometer steps of 0.02 degree. File names consist of core label and depth of sample in six digits cm with leading zeros separated by an underline and ending with _clay.txt. All raw data files are stored in one zip-archive, linked to this metadescription. Clay fraction less than 2 micron was quantitatively separated by Atterberg method (settling tube), washed, dried and milled. Clay was resuspended and texturized on sample holder for analysis.

数据文件格式为文本，包含两列由制表符分隔：1. 旋转式测角仪角度，2. 计数。样品在旋转式测角仪上以0.02度步长进行测量，使用钴K-α灯泡作为光源。文件名由核心标签和样品深度（六位数字，以零开头，并由下划线分隔）组成，以_clay.txt结尾。所有原始数据文件存储在一个zip归档中，并与本元数据描述相关联。小于2微米的粘土成分通过阿特贝格法（沉降管法）进行定量分离，随后清洗、干燥并磨碎。粘土被重新悬浮并置于样品支架上进行分析。