de.pangaea.dataset873610 und dataset PANGAEA

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https://www.pangaea.de/ information pointOfContact 2026-04-30T22:48:46Z https://doi.pangaea.de/10.1594/PANGAEA.873610 1980-01-01 publication https://doi.org/10.1594/PANGAEA.873610 Juteau, Thierry author Eissen, Jean-Philippe author Francheteau, Jean author Needham, David

dneedham@geomar.de

author Choukroune, P author Rangin, Claude author Séguret, Marie J M author Ballard, R D author Fox, P J author Normark, William R author Carranza, A author Cordoba, D author Guerrero, J author PANGAEA

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https://www.pangaea.de/ information publisher tableDigital Supplement to: 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): 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/ 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. completed NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database theme 1995-01-01 creation PANGAEA

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https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-3.0: Creative Commons Attribution 3.0 Unported textTable und geoscientificInformation -109.30325399999998 -108.22092600000002 20.855633 23.137964 1978-03-01T00:00:00 1978-03-01T00:00:00 0.0 0.0 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. Event label thematicClassification Latitude of event thematicClassification Longitude of event thematicClassification Elevation of event physicalMeasurement m m Identification thematicClassification DEPTH, sediment/rock physicalMeasurement m m Position thematicClassification Visual description Deposit type thematicClassification Percentage physicalMeasurement % % Substrate type thematicClassification Sediment type thematicClassification Description thematicClassification text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.873610?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 EVENT LABEL: 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 1978-03-01T00:00:00 Source 1992-01-01 publication https://doi.org/10.7289/V52Z13FT Grant, John Bruce author Moore, Carla J

carla.j.moore@noaa.gov

https://orcid.org/0000-0002-2610-8648 information author Alameddin, George author Chen, Kuiying author Barton, Mark author documentDigital National Geophysical Data Center, NOAA Further details 1992-01-01 publication https://doi.org/10.7289/V53X84KN Warnken, Robin R

rrw@luna.ngdc.noaa.gov

author Virden, William T author Moore, Carla J

carla.j.moore@noaa.gov

https://orcid.org/0000-0002-2610-8648 information author documentDigital National Geophysical Data Center, NOAA