PANGAEA_987555 X-ray diffraction results from IODP Hole 389-M0097B Webster, Jody M; Ravelo, Ana Christina; Grant, Hannah; Stewart, Margaret S; Rydzy, Marisa; Le Ber, Erwan; Allison, Nicola; Asami, Ryuji; Boston, Brian; Braga, Juan-Carlos; Brenner, Logan; Chen, Xuefei; Chutcharavan, Peter; Dutton, Andrea; Felis, Thomas; Fukuyo, Naoto; Gischler, Eberhard; Greve, Sahra; Hagen, Amy; Hamon, Youri; Hathorne, Ed C; Humblet, Marc; Jorry, Stephan J; Khanna, Pankaj; McGregor, Helen V; Mortlock, Richard A; Nohl, Theresa; Potts, Donald C; Prohaska, Ana; Prouty, Nancy G; Renema, Willem; Rubin, Kenna Harmony; Westphal, Hildegard; Yokoyama, Yusuke X-ray diffraction results from IODP Hole 389-M0097B 2025-11-25 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.987555 Earth Science Event label Sample code/label Proposed International Geo Sample Number Depth, sediment/rock, top/minimum Depth, sediment/rock, bottom/maximum Main Lithology Quartz Cristobalite Plagioclase Calcite Magnesium-Calcite Aragonite Minerals Siderite/Magnesite ratio Barite Sodium chloride Biotite Chlorite Pyroxene d-value geoscientificInformation 389-M0097B Benthic Portable Remotely Operated Drill (PROD5) central Pacific Coral Reef Earth climate feedbacks Earth history tipping points Exp389 Expedition 389 Hawaiian Drowned Reefs Hawaiian geology International Ocean Discovery Program (IODP) KAW-04Bb MMA Valour Paleoclimate sea level volcanic DSDP/ODP/IODP sample designation X-ray diffractometer, Bruker, D8 Discover Calculated MMA Valour 2023-09-10 2023-09-12 Complete 19.942109 19.942109 -156.0628769 -156.0628769 IODP Integrated Ocean Drilling Program / International Ocean Discovery Program unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 100 data points text/tab-separated-values Webster, Jody M; Ravelo, Ana Christina; Grant, Hannah; Stewart, Margaret S; Rydzy, Marisa; Le Ber, Erwan; Allison, Nicola; Asami, Ryuji; Boston, Brian; Braga, Juan-Carlos; Brenner, Logan; Chen, Xuefei; Chutcharavan, Peter; Dutton, Andrea; Felis, Thomas; Fukuyo, Naoto; Gischler, Eberhard; Greve, Sahra; Hagen, Amy; Hamon, Youri; Hathorne, Ed C; Humblet, Marc; Jorry, Stephan J; Khanna, Pankaj; McGregor, Helen V; Mortlock, Richard A; Nohl, Theresa; Potts, Donald C; Prohaska, Ana; Prouty, Nancy G; Renema, Willem; Rubin, Kenna Harmony; Westphal, Hildegard; Yokoyama, Yusuke (2025): Hawaiian Drowned Reefs. Proceedings of the International Ocean Discovery Program, International Ocean Discovery Program, 389, https://doi.org/10.14379/iodp.proc.389.2025

Results of X-ray diffraction (XRD) analyses from the above given hole of International Ocean Discovery Program (IODP) Expedition 389 (Hawaiian Drowned Reefs). The offshore phase of this expedition took place between 2023-08-31 and 2023-10-31 onboard multipurpose vessel MMA Valour sailing from and to Barbers Point Harbor, Hawai'i, USA, followed by the onshore phase from 2025-02-06 to 2025-02-26 at the Bremen Core Repository (BCR) hosted at MARUM – Center for Marine Environmental Sciences, University of Bremen. During the onshore phase a set of solid-phase samples, with a volume of approx. 10 cubic centimeters each, were taken from the work halves of core sections with the purpose to be later on split into aliquots for the following three analyses: X-ray diffraction, carbon analyses and X-ray fluorescence. Unprocessed samples were freeze-dried, ground and homogenized to a fine powder (<20 µm particle size) by ECORD Science Operator staff using a pestle and an agate mortar or a ball mill. The aliquots for XRD analysis were prepared with the Philips backloading system in the Crystallography and Geomaterials Research laboratories of the Geoscience Department at the University of Bremen (Germany). X-ray diffractograms were measured on a Bruker D8 Discover diffractometer. Mineral identification and semi-quantification were done using the Philips software X'Pert HighScore Version 1.2 (Degen et al., 2014, https://doi.org/10.1017/S0885715614000840) following concepts of Vogt (2009, https://doi.org/10.2204/iodp.proc.302.203.2009). Measurement results are all given in weight percent (wt%). For further methodological information see methods chapter in Webster, J.M. et al., 2025 https://doi.org/10.14379/iodp.proc.389.2025 ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.987555"! ** Data was submitted and proofread by Vera Barbara Bender, MARUM - Center for Marine Environmental Sciences (University Bremen) on behalf of ECORD Science Operator Data Management (https://www.ecord.org).

http://www.mindat.org/min-11468.html Chlorite http://www.mindat.org/min-1155.html Cristobalite http://www.mindat.org/min-307.html Aragonite http://www.mindat.org/min-3337.html Quartz http://www.mindat.org/min-4723.html Barite http://www.mindat.org/min-677.html Biotite http://www.mindat.org/min-859.html Calcite http://www.mindat.org/min-9264.html Plagioclase https://doi.org/10.14379/iodp.proc.389.2025 Exp389 https://doi.org/10.14379/iodp.proc.389.2025 Hawaiian Drowned Reefs https://hdl.handle.net/10013/epic.27914.d001 DSDP/ODP/IODP sample designation https://store.pangaea.de/documentation/Cruise_Reports/OtherVessels/MMA_Valour.pdf MMA Valour https://www.iodp.org/ IODP DIF 9.4 2025-11-25 2026-04-30