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): X-ray diffraction results from IODP Hole 389-M0097A [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.987554 (DOI registration in progress)
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Published: 2025-11-25
Abstract:
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
Keyword(s):
Related to:
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
Project(s):
Coverage:
Latitude: 19.942137 * Longitude: -156.062853
Date/Time Start: 2023-09-07T00:00:00 * Date/Time End: 2023-09-09T00:00:00
Minimum Elevation: -414.2 m * Maximum Elevation: -414.2 m
Event(s):
389-M0097A (KAW-04Ba) * Latitude: 19.942137 * Longitude: -156.062853 * Date/Time Start: 2023-09-07T00:00:00 * Date/Time End: 2023-09-09T00:00:00 * Elevation: -414.2 m * Location: Hawaii, USA * Campaign: Exp389 (Hawaiian Drowned Reefs (HDR)) * Basis: MMA Valour * Method/Device: Benthic Portable Remotely Operated Drill (PROD5) * Comment: IGSN: IBCR0389EHH5101. Spatial reference system (SRS): 4326. Comment: LAT water depth: 413.6m. Maximum number of barrels used.
Comment:
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).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | DSDP/ODP/IODP sample designation | |||
| 3 | Proposed International Geo Sample Number | Prop IGSN | ||||
| 4 | Depth, sediment/rock, top/minimum | Depth sed top | m | in mbsf | ||
| 5 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | in mbsf | ||
| 6 | Main Lithology | Main lith | ||||
| 7 | Quartz | Qz | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 8 | Cristobalite | Crs | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 9 | Plagioclase | Pl | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 10 | Calcite | Cal | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 11 | Magnesium-Calcite | Mg-Cal | % | X-ray diffractometer, Bruker, D8 Discover | Mg-rich calcite | |
| 12 | Aragonite | Arg | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 13 | Minerals | Minerals | % | X-ray diffractometer, Bruker, D8 Discover | Manganocalcite, kutnohorite, rhodocrosite, etc. | |
| 14 | Siderite/Magnesite ratio | Sd/Mgs | Calculated | see comment | ||
| 15 | Barite | Brt | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 16 | Sodium chloride | NaCl | % | X-ray diffractometer, Bruker, D8 Discover | NaCl etc. | |
| 17 | Biotite | Bt | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 18 | Chlorite | Chl | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 19 | Pyroxene | Pyrox | % | X-ray diffractometer, Bruker, D8 Discover | ||
| 20 | Minerals | Minerals | % | X-ray diffractometer, Bruker, D8 Discover | Garnet, olivine, corundum, spinel (see comment for detail) | |
| 21 | d-value | d-value | Calculated | d-value for Mg-rich calcite (angstrom) | ||
| 22 | Comment | Comment | Notes from XRD laboratory |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
182 data points