Citation:

PANGAEA.987552 (DOI registration in progress)

Name: X-ray diffraction results from IODP Hole 389-M0096D
Published: 2025-11-25
License: https://creativecommons.org/licenses/by/4.0/
Keywords: central Pacific; Coral Reef; Earth climate feedbacks; Earth history tipping points; Expedition 389; Hawaiian Drowned Reefs; Hawaiian geology; International Ocean Discovery Program (IODP); MMA Valour; Paleoclimate; sea level; volcanic

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Published: 2025-11-25

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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):

central Pacific; Coral Reef; Earth climate feedbacks; Earth history tipping points; Expedition 389; Hawaiian Drowned Reefs; Hawaiian geology; International Ocean Discovery Program (IODP); MMA Valour; Paleoclimate; sea level; volcanic

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):

Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)

Coverage:

Latitude: 20.036843 * Longitude: -156.065610

Date/Time Start: 2023-09-07T00:00:00 * Date/Time End: 2023-09-07T00:00:00

Minimum Elevation: -736.8 m * Maximum Elevation: -736.8 m

Event(s):

389-M0096D (KAW-06Ae) * Latitude: 20.036843 * Longitude: -156.065610 * Date/Time Start: 2023-09-07T00:00:00 * Date/Time End: 2023-09-07T00:00:00 * Elevation: -736.8 m * Location: Hawaii, USA * Campaign: (Hawaiian Drowned Reefs (HDR)) * Basis: * Method/Device: Benthic Portable Remotely Operated Drill (PROD5) * Comment: IGSN: IBCR0389EHG5101. Spatial reference system (SRS): 4326. Comment: LAT water depth: 736.2m. Borehole abandoned due to technical issues.

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	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	Minerals	Minerals	%	X-ray diffractometer, Bruker, D8 Discover	Manganocalcite, kutnohorite, rhodocrosite, etc.
8	Plagioclase	Pl	%	X-ray diffractometer, Bruker, D8 Discover
9	Magnesium-Calcite	Mg-Cal	%	X-ray diffractometer, Bruker, D8 Discover	Mg-rich calcite
10	Aragonite	Arg	%	X-ray diffractometer, Bruker, D8 Discover
11	Gypsum	Gp	%	X-ray diffractometer, Bruker, D8 Discover	Gypsum, anhydrite, jarosites
12	Montmorillonite	Mnt	%	X-ray diffractometer, Bruker, D8 Discover	Sum montmorillonites + smectites
13	Serpentinite	Srp	%	X-ray diffractometer, Bruker, D8 Discover	Serpentinite, talc, chrysotile
14	Zeolite	Zeo	%	X-ray diffractometer, Bruker, D8 Discover
15	Pyroxene	Pyrox	%	X-ray diffractometer, Bruker, D8 Discover
16	Cristobalite	Crs	%	X-ray diffractometer, Bruker, D8 Discover
17	Comment	Comment			Notes from XRD laboratory

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

16 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Sample label	3 Prop IGSN	4 Depth sed top [m]	5 Depth sed bot [m]	6 Main lith	7 Minerals [%]	8 Pl [%]	9 Mg-Cal [%]	10 Arg [%]	11 Gp [%]	12 Mnt [%]	13 Srp [%]	14 Zeo [%]	15 Pyrox [%]	16 Crs [%]	17 Comment
389-M0096D	389-M0096D-3R-1,0-2	IBCR0389EXLLE74	4.56	4.58	Basalt	0	0	0	0	0	0	1	0	99	0	Nearly pure forsterite clinopyroxene