/* DATA DESCRIPTION:
Citation:	Hariya, Yu; Tsutsumi, Makoto (1981): (Fig 3, page 49) Variations with depth of the SMOW Relative Deuterium/Hydrogen Ratio (DeltaD) values of Pacific Ocean manganese deposits [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.872361, 
	Supplement to: Hariya, Y; Tsutsumi, M (1981): Hydrogen-isotopic composition of some hydrous manganese minerals. Chemical Geology, 34(1-2), 43-52, https://doi.org/10.1016/0009-2541(81)90070-X
Abstract:	Initial data on the hydrogen-isotopic compositions in hydrous Mn minerals from various occurrences fall in a wide range from -298 to -84 per mil, relative to SMOW. DeltaD-values of todorokite and cryptomelane from Tertiary deposits show -89 and -150 per mil. 10 Angström-manganite and Delta-MnO2 from deep-sea nodules have relatively restricted DeltaD-values ranging from -96 to -84 per mil. The DeltaD-values for manganese bog ores from recent hot springs show almost -105 per mil. It is recognized that the isotopic values obtained for the deep-sea nodules and recent bog ores are slightly different ranged. Manganite and groutite are unique in their hydrogen-isotopic compositions, having the most depleted DeltaD-values ranging from -298 to -236 per mil. MnO(OH) minerals are more deuterium-depleted hydrous minerals than any other hydrothermal minerals from various ore deposits. Hydrogen-isotope fractionation factors between manganite and water were experimentally determined to be 0.7894, 0.7958 and 0.8078 at 150°, 200° and 250°C, respectively. the present experimental results indicate that if manganites were formed at temperatures below 250°C, under isotopic equilibrium conditions, most of the manganite mineralization in the Tertiary manganese deposits must have precipitated from meteoric hydrothermal solutions.
Source:	Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:	Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):	NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS) (URI: https://wiki.pangaea.de/wiki/NOAA-MMS)
Coverage:	MEDIAN LATITUDE: 10.121671 * MEDIAN LONGITUDE: 174.916669 * SOUTH-BOUND LATITUDE: 8.970000 * WEST-BOUND LONGITUDE: 149.683344 * NORTH-BOUND LATITUDE: 12.533354 * EAST-BOUND LONGITUDE: -175.035000
	DATE/TIME START: 1973-08-15T00:00:00 * DATE/TIME END: 1977-02-26T00:00:00
	MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m
Event(s):	GH77-1-D212 * LATITUDE: 9.985000 * LONGITUDE: -175.035000 * DATE/TIME: 1977-02-26T00:00:00 * ELEVATION: -5806.0 m * LOCATION: Pacific Ocean * CAMPAIGN: GH77-1 (URI: https://www.gsj.jp/en/publications/cruise-rep/cruise12.html) * BASIS: Hakurei-Maru (1974) (URI: https://www.jodc.go.jp/JGOFS_DMO/testpage/Ships/Hakurei.htm) * METHOD/DEVICE: Dredge, box (DRG_B)
	GH77-1-FG40-1 * LATITUDE: 8.998330 * LONGITUDE: -177.980000 * DATE/TIME: 1977-01-30T00:00:00 * ELEVATION: -5795.0 m * LOCATION: Pacific Ocean * CAMPAIGN: GH77-1 (URI: https://www.gsj.jp/en/publications/cruise-rep/cruise12.html) * BASIS: Hakurei-Maru (1974) (URI: https://www.jodc.go.jp/JGOFS_DMO/testpage/Ships/Hakurei.htm) * METHOD/DEVICE: Free-fall grab (FFGR)
	GH77-1-G384 * LATITUDE: 8.970000 * LONGITUDE: -177.001670 * DATE/TIME: 1977-02-02T00:00:00 * ELEVATION: -5920.0 m * LOCATION: Pacific Ocean * CAMPAIGN: GH77-1 (URI: https://www.gsj.jp/en/publications/cruise-rep/cruise12.html) * BASIS: Hakurei-Maru (1974) (URI: https://www.jodc.go.jp/JGOFS_DMO/testpage/Ships/Hakurei.htm) * METHOD/DEVICE: Ocean 70 grab (O70)
	KH73-4-2 * LATITUDE: 12.533354 * LONGITUDE: 149.683344 * DATE/TIME: 1973-08-15T00:00:00 * ELEVATION: -3030.0 m * LOCATION: Pacific Ocean * CAMPAIGN: KH-73-4 * BASIS: Hakuho-Maru (URI: https://www.jamstec.go.jp/e/about/equipment/ships/hakuhomaru.html) * METHOD/DEVICE: Core (CORE)
Comment:	From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
Parameter(s):	Event label (Event) * PI: Hariya, Yu
	Identification (ID) * PI: Hariya, Yu
	DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Hariya, Yu
	δ Deuterium [‰ SMOW] (δD) * PI: Hariya, Yu * METHOD/DEVICE: Isotope ratio mass spectrometry (URI: https://en.wikipedia.org/wiki/Isotope_ratio_mass_spectrometry)
	Deposit type (Deposit type) * PI: Hariya, Yu
License:	Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/)
Size:	12 data points
*/
Event	ID	Depth sed [m]	δD [‰ SMOW]	Deposit type
KH73-4-2	KH73-4-2-1H	0	-95	Mn crust
GH77-1-D212	GH77-1-D212-1H	0	-85	Mn nodule
GH77-1-G384	GH77-1-G384-1H	0	-81	Mn nodule
GH77-1-FG40-1	GH77-1-FG40-1-1H	0	-81	Mn nodule