Elemental composition of cold-water bamboo corals from the South China Sea

The data in this sheet were obtained through in-situ analysis of cold-water coral sample cross-sections using laser ablation inductively coupled plasma (LA-ICP-MS). The coral cross-sections exhibit tree ring-like concentric growth bands, prompting the selection of two growth directions for testing in samples SY067-7 and SY268-10 to examine the reproducibility of elemental distribution across different growth axes. The main line corresponds with the magnesium isotope testing path, while position represents the measurement points' distance relative to the growth central axis.