Zeng Zhiwei zwzeng@tongji.edu.cn Tongji University https://ror.org/03rc6as71 Dang Haowen hwdang@tongji.edu.cn 0000-0002-1320-4761 Tongji University https://ror.org/03rc6as71 Zhang Hongrui zhh@ethz.ch 0000-0003-1782-5976 Tongji University https://ror.org/03rc6as71 Bao Zhian geobza@126.com Northwest University https://ror.org/00z3td547 Yu Xun yuxun@tongji.edu.cn Tongji University https://ror.org/03rc6as71 Li Chen 1532983@tongji.edu.cn 0000-0002-0721-9182 Tongji University https://ror.org/03rc6as71 Bu Mingyuan 2311560@tongji.edu.cn Tongji University https://ror.org/03rc6as71 Zhang Peng zp13@foxmail.com 0000-0003-0472-5626 Northwest University https://ror.org/00z3td547 Zhou Xiaoli xiaoli.zhou@rutgers.edu 0000-0001-8221-9548 Tongji University https://ror.org/03rc6as71 Jian Zhimin jian@tongji.edu.cn Tongji University https://ror.org/03rc6as71 2025 Mg isotopic composition of cold-water bamboo corals from the South China Sea dataset https://doi.org/10.1594/PANGAEA.983405 2025-12-31T00:00:29 https://doi.org/10.1594/PANGAEA.983404 The data in this sheet present magnesium isotopic composition obtained from micro-drilled powder samples of cold-water corals analyzed by multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS) and corresponding elemental compositions by laser ablation inductively coupled plasma (LA-ICP-MS). Micro-drilling was performed across distinct growth stages in three specimens to investigate how Mg isotopic variations reflect magnesium incorporation mechanisms in different growth structures. Sampling position represents each measurement point's distance relative to the growth central axis. 110.71 117.12 16.55 17.64 112.90666666666668 16.92 2018-05-13T12:05:00 2020-08-25T15:42:00 -2583.7 -1119.3 SY067-7 16.57 110.71 -1408.8 2018-05-13T12:05:00 ST03 ST03 2018-05-13T00:00:00 2018-05-13 Tansuo-2 Tansuo-2 Human Occupied Vehicle HOV SY185-2 16.55 110.89 -1119.3 2019-07-31T15:34:00 TS12-02 TS12-02 2019-07-31T00:00:00 2019-07-31 Tansuo-2 Tansuo-2 Human Occupied Vehicle HOV SY268-10 17.64 117.12 -2583.7 2020-08-25T15:42:00 TS2-1-3 TS2-1-3 2020-08-25T00:00:00 2020-08-25 Tansuo-2 Tansuo-2 Human Occupied Vehicle HOV 121 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Zeng Zhiwei zwzeng@tongji.edu.cn Event Latitude of event Latitude Zeng Zhiwei zwzeng@tongji.edu.cn Latitude Longitude of event Longitude Zeng Zhiwei zwzeng@tongji.edu.cn Longitude Date/Time of event Date/Time Zeng Zhiwei zwzeng@tongji.edu.cn Date/Time Sample code/label Sample label Zeng Zhiwei zwzeng@tongji.edu.cn Sample label Distance Dist mm distance http://purl.obolibrary.org/obo/PATO_0000040 Length L http://dbpedia.org/resource/Length Zeng Zhiwei zwzeng@tongji.edu.cn Measurement point's distance relative to the growth central axis Dist [mm] Structure Structure structure http://purl.obolibrary.org/obo/PATO_0000141 Zeng Zhiwei zwzeng@tongji.edu.cn Structure δ26Mg δ26Mg ‰ δ26Mg http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Multiple collector inductively-coupled plasma mass spectrometer MC-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn δ26Mg [‰] δ26Mg, standard deviation δ26Mg std dev ± δ26Mg http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Multiple collector inductively-coupled plasma mass spectrometer MC-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn 2sd δ26Mg std dev [±] δ25Mg δ25Mg ‰ δ25Mg http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Multiple collector inductively-coupled plasma mass spectrometer MC-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn δ25Mg [‰] δ25Mg, standard deviation δ25Mg std dev ± δ25Mg http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Multiple collector inductively-coupled plasma mass spectrometer MC-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn 2sd δ25Mg std dev [±] Magnesium/Calcium ratio Mg/Ca mmol/mol magnesium calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Laser Ablation Inductively Coupled Mass Spectrometer LA-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn Mg/Ca [mmol/mol] Boron/Calcium ratio B/Ca µmol/mol calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Laser Ablation Inductively Coupled Mass Spectrometer LA-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn B/Ca [µmol/mol] Strontium/Calcium ratio Sr/Ca mmol/mol strontium calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Laser Ablation Inductively Coupled Mass Spectrometer LA-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn Sr/Ca [mmol/mol] Barium/Calcium ratio Ba/Ca µmol/mol barium calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Laser Ablation Inductively Coupled Mass Spectrometer LA-ICP-MS Zeng Zhiwei zwzeng@tongji.edu.cn Ba/Ca [µmol/mol] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable cold-water octocoral Mg/Ca Mg isotopes author111466 author114046 author114047 author59396 author66184 author66871 author67010 author91120 author91130 author91350 basis5515 campaign3395055 campaign3395064 campaign3395065 campaign52709 campaign52710 campaign52711 curlevel30 event3268452 event3268454 event3268455 geocode1599 geocode1600 geocode1601 geocode8128 inst1769 inst22380 license21 method17988 method17989 method17990 param114908 param114909 param128045 param128046 param171658 param2265 param2800 param790 param91392 param91393 param96232 pi111466 term1073118 term1073127 term1073622 term1073628 term2663825 term37764 term38520 term40663 term40665 term40966 term43863 term47481 term51403 term71696