/* DATA DESCRIPTION:
Citation:	Juteau, Thierry; Eissen, Jean-Philippe; Francheteau, Jean; Needham, David; Choukroune, P; Rangin, Claude; Séguret, Marie J M; Ballard, R D; Fox, P J; Normark, William R; Carranza, A; Cordoba, D; Guerrero, J (1980): Observation of manganese deposits on the East Pacific Rise during the CYAMEX-RITA expedition [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.873610, 
	Supplement to: Juteau, T et al. (1980): Homogeneous basalts from the East Pacific Rise at 21° N: seady state magma reservoirs at moderately fast spreading centers. Oceanologica Acta, 3(4), 487-503, https://archimer.ifremer.fr/doc/00323/43430/
Abstract:	Forty basaltic rocks collected by submersible during the Cyamex expedition (1978) on the East PacifIc Rise at 21°N, a moderately fast spreading segment (6 cm/year opening rate) of the mid-ocean ridge, consist of angular pillow fragments and glass buds, sheet-flow slabs and samples of columnar pillars standing in collapsed fossillava pools. Most of the rocks are from the crestal are a of the Rise. The collection shows a striking petrographic homogeneity wh en compared with the range of basalts found on other segments of midocean ridges: olivine-phyric, or highly plagioclase-phyric rocks, so common in the slowspreading Famous are a in the Atlantic, are absent. All samples are typical lowpotassium oceanic tholeiites with a limited fractionation trend. Pillow-lavas, thin and thick sheet-flows cannot be distinguished by their major element compositions, as in the Galapagos rift which has the same spreading rate as the EPR at 21°N. Further, ferrobasalts have been described from the Galapagos rift, but do not appear in the Cyamex rocks. In the Cyamex area, olivine and plagioclase are the main silicate phases, and clinopyroxene is absent. In the pillows and sheet-flow samples, four generations of olivine and plagioclase crystals are distinguished. Samples from the fossillava pools are aphyric. The corresponding magma batches are presumed to have migrated rapidly through the magma chamber, and to have been extruded in large volumes, possibly during episodes ofhigh instantaneous opening rate. Fe-Ni and Fe-Cu-rich sulphide phases are common in an lava types as massive globules scatterred through the glass, or as microglobules decorating the walls of empty vesicles. Palagonite and Fe-Mn oxide thicknesses across the strike of the Rise indicate relative ages compatible with successive extrusions at the Rise axis.
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: 21.489381 * MEDIAN LONGITUDE: -108.953076 * SOUTH-BOUND LATITUDE: 20.855633 * WEST-BOUND LONGITUDE: -109.303254 * NORTH-BOUND LATITUDE: 23.137964 * EAST-BOUND LONGITUDE: -108.220926
	DATE/TIME START: 1978-03-01T00:00:00 * DATE/TIME END: 1978-03-01T00:00:00
	MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m
Event(s):	CY-78-07-12D * LATITUDE: 20.918479 * LONGITUDE: -109.046310 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2635.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-10-17D * LATITUDE: 20.899198 * LONGITUDE: -109.028000 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2660.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-10-18D * LATITUDE: 20.888897 * LONGITUDE: -109.018290 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2615.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-11-26D * LATITUDE: 23.137964 * LONGITUDE: -108.441372 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2450.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-12-35D * LATITUDE: 20.903357 * LONGITUDE: -109.040038 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2645.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-13-42D * LATITUDE: 23.105950 * LONGITUDE: -108.490100 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2800.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-13-43D * LATITUDE: 23.120644 * LONGITUDE: -108.478871 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2750.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-13-44D * LATITUDE: 23.131868 * LONGITUDE: -108.473262 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2680.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-15-55D * LATITUDE: 20.969318 * LONGITUDE: -109.294608 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2805.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-15-56D * LATITUDE: 20.971491 * LONGITUDE: -109.303254 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2800.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-16-57D * LATITUDE: 20.947928 * LONGITUDE: -109.285194 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2800.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-16-58D * LATITUDE: 20.955122 * LONGITUDE: -109.300645 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2750.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-17-60D * LATITUDE: 20.931321 * LONGITUDE: -109.192687 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2810.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-17-61D * LATITUDE: 20.940220 * LONGITUDE: -109.216906 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2800.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-18-63D * LATITUDE: 20.868297 * LONGITUDE: -109.063805 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2600.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-18-65D * LATITUDE: 20.868863 * LONGITUDE: -109.066131 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2615.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-18-66D * LATITUDE: 20.878311 * LONGITUDE: -109.076550 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2625.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-19-69D * LATITUDE: 20.855633 * LONGITUDE: -109.071488 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2600.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
	CY-78-20-76D * LATITUDE: 23.005379 * LONGITUDE: -108.220926 * DATE/TIME: 1978-03-01T00:00:00 * ELEVATION: -2850.0 m * LOCATION: East Pacific Rise * CAMPAIGN: CYAMEX * BASIS: Cyana (Submersible) * METHOD/DEVICE: Robotic arm (ROBA)
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)
	Latitude of event (Latitude)
	Longitude of event (Longitude)
	Elevation of event [m] (Elevation)
	Identification (ID)
	DEPTH, sediment/rock [m] (Depth sed) * GEOCODE
	Position (Position) * METHOD/DEVICE: Visual description
	Deposit type (Deposit type)
	Percentage [%] (Perc)
	Substrate type (Substrate)
	Sediment type (Sediment)
	Description (Description)
License:	Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/)
Size:	108 data points
*/
Event	Latitude	Longitude	Elevation [m]	ID	Depth sed [m]	Position	Deposit type	Perc [%]	Substrate	Sediment	Description
CY-78-11-26D	23.1380	-108.4414	-2450	CY-78-11-26D-1	0	Surface	Mn coating		Rock; basalt		Basalt with Mn
CY-78-13-42D	23.1060	-108.4901	-2800	CY-78-13-42D-1	0	Surface	Mn crust				Mn plate
CY-78-13-43D	23.1206	-108.4789	-2750	CY-78-13-43D-1	0	Surface	Mn coating		Boulder; pumice		Pumice with Mn
CY-78-13-44D	23.1319	-108.4733	-2680	CY-78-13-44D-1	0	Surface	Mn coating		Boulder; pumice		Pumice with Mn
CY-78-20-76D	23.0054	-108.2209	-2850	CY-78-20-76D-1	0	Surface	Mn coating		Rock; basalt		Basalt with Mn
CY-78-15-55D	20.9693	-109.2946	-2805	CY-78-15-55D-1	0	Surface	Mn coating		Rock; basalt		Basalt with Mn
CY-78-15-56D	20.9715	-109.3033	-2800	CY-78-15-56D-1	0	Surface	Mn coating		Rock; basalt		Basalt with Mn
CY-78-16-57D	20.9479	-109.2852	-2800	CY-78-16-57D-1	0	Surface	Mn coating		Rock; igneous, pumice		Andesitic pumice with Mn
CY-78-16-58D	20.9551	-109.3006	-2750	CY-78-16-58D-1	0	Surface	Mn coating		Rock; igneous, pumice		Andesitic pumice with Mn
CY-78-17-60D	20.9313	-109.1927	-2810	CY-78-17-60D-1	0	Surface	Mn coating		Rock; basalt		Basalt with Mn
CY-78-17-61D	20.9402	-109.2169	-2800	CY-78-17-61D-1	0	Surface	Mn coating		Rock; basalt		Basalt with Mn
CY-78-10-17D	20.8992	-109.0280	-2660	CY-78-10-17D-1	0	Surface	Mn crust	1.33	Rock; basalt		Mn crust on pillow lava
CY-78-10-18D	20.8889	-109.0183	-2615	CY-78-10-18D-1	0	Surface	Mn crust	1.30	Rock; basalt		Mn crust on pillow lava
CY-78-18-65D	20.8689	-109.0661	-2615	CY-78-18-65D-1	0	Surface	Mn coating	0.09	Rock; basalt		Mn crust on pillow lava
CY-78-07-12D	20.9185	-109.0463	-2635	CY-78-07-12D-1B	0	Surface	Mn coating	0.17	Consolidated sediment	Yellow-brown clay sediment with thin coral like concretions	
CY-78-18-63D	20.8683	-109.0638	-2600	CY-78-18-63D-1A	0	Surface	Mn coating	0.10	Rock; basalt		Mn coating of basalt sheet flow
CY-78-18-63D	20.8683	-109.0638	-2600	CY-78-18-63D-1B	0	Surface	Mn coating	0.32	Rock; basalt		Mn coating of basalt sheet flow
CY-78-18-66D	20.8783	-109.0766	-2625	CY-78-18-66D-1B	0	Surface	Mn crust	1.09	Rock; basalt		Mn coating of basalt sheet flow
CY-78-12-35D	20.9034	-109.0400	-2645	CY-78-12-35D-1	0	Surface	Mn coating	0.14	Rock; sulfide		Mn coating on pillar sulfatic accumulations
CY-78-19-69D	20.8556	-109.0715	-2600	CY-78-19-69D-1	0	Surface	Mn coating	0.96	Rock; sulfide		Mn coating on pillar sulfatic accumulations