Are mantle eclogites evidence of subducted carbonate sediments in Earth’s deep carbon cycle?

Supplemented data provide information about Petrography, trace element compositions of unknown standards, Oxygen isotope data of Obnazhennaya high-MgO eclogites, as well as global dataset of mantle eclogites.本补充数据集涵盖岩石学（Petrography）数据、未知标样的微量元素组成数据、Obnazhennaya高MgO榴辉岩的氧同位素数据，以及全球地幔榴辉岩数据集。