Sample masses and lithic fraction of IODP Site 306-U1313

New version, upload 2017-01-27: the mcd were given incorrectly in the old version for some of the U1313D-2H samples.新版数据集于2017年1月27日上传：旧版本中部分U1313D-2H样品的MCD（mcd）参数存在错误。