Raw data files of X-ray diffraction analysis of the clay fraction from sediment core PS1930-2

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.

文件格式为文本，包含两列由制表符分隔的数据：1. 旋转仪角度，2. 计数。样本以旋转仪0.02度步长使用钴K-α灯泡进行测量。文件名由核心标签和样本深度（六位数字厘米，首位补零，以下划线分隔）构成，并以_clay.txt结尾。所有原始数据文件存储在一个zip压缩包中，与该元描述相链接。采用阿特堡法（沉降管法）对小于2微米的粘土成分进行定量分离，随后进行清洗、干燥和研磨。粘土被重新悬浮并在样品支架上进行结构化处理，以供分析。