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Albers, Elmar; Behrendt, Nele; Diehl, Alexander; Genske, Felix; Monien, Patrick; Kasemann, Simone A; Purser, Autun; Boetius, Antje; Bach, Wolfgang (2024): Major elemental compositions of feldspar in mafic rocks from the Langseth Ridge (Gakkel Ridge) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.972362 (DOI registration in progress)

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Abstract:
This dataset contains mineral chemical data of primary and alteration phases in mafic rocks (basalt and diabase) from the Langseth Ridge and Afanasenkov Seamount, two volcanic centers on the ultraslow-spreading Gakkel Ridge, Arctic Ocean. The samples were collected during R/V Polarstern Expeditions PS78 and PS101 and USCGC HEALY Expedition HLY0102. Major elemental compositions were collected via electron microprobe. Details on the analytical procedure can be found in Albers et al. (2024).
Keyword(s):
basalt; Gakkel ridge; Geochemistry; Mid-Ocean Ridge; Ultraslow-spreading; Volcanic center
Related to:
Albers, Elmar; Behrendt, Nele; Diehl, Alexander; Genske, Felix; Monien, Patrick; Kasemann, Simone A; Purser, Autun; Boetius, Antje; Bach, Wolfgang (2024): Formation and hydrothermal alteration of a volcanic center: Melt pooling and mass transfers at Langseth Ridge (Gakkel Ridge, Arctic Ocean). Marine Geology, 475, 107347, https://doi.org/10.1016/j.margeo.2024.107347
Coverage:
Median Latitude: 86.745533 * Median Longitude: 55.247167 * South-bound Latitude: 86.041667 * West-bound Longitude: 30.080000 * North-bound Latitude: 86.961667 * East-bound Longitude: 61.618330
Date/Time Start: 2001-08-27T21:54:00 * Date/Time End: 2016-10-07T02:56:00
Minimum Elevation: -4531.0 m * Maximum Elevation: -1970.2 m
Event(s):
HLY0102/D46 (D46) * Latitude: 86.041667 * Longitude: 30.080000 * Date/Time Start: 2001-08-27T21:54:00 * Date/Time End: 2001-08-28T00:15:00 * Elevation: -4531.0 m * Campaign: HLY0102 * Basis: Healy * Method/Device: Dredge (DRG) * Comment: MAPR/~1000 lbs of greenstone and old basalt gravel, quartzite; sponges; MAPR small LSS peak ~3400 m.
HLY0102/D56 (D56) * Latitude Start: 86.961667 * Longitude Start: 61.473333 * Latitude End: 86.945000 * Longitude End: 61.585000 * Date/Time Start: 2001-09-01T21:31:00 * Date/Time End: 2001-09-01T22:49:00 * Elevation Start: -3474.0 m * Elevation End: -3085.0 m * Campaign: HLY0102 * Basis: Healy * Method/Device: Dredge (DRG) * Comment: MAPR/greenstone, diabase, basalt breccia; MAPR very tiny hint of LSS and temp peaks at 2300-2600 m
PS101/203-1 * Latitude Start: 86.890000 * Longitude Start: 61.618330 * Latitude End: 86.889330 * Longitude End: 61.479170 * Date/Time Start: 2016-10-07T02:30:00 * Date/Time End: 2016-10-07T02:56:00 * Elevation Start: -2010.6 m * Elevation End: -1970.2 m * Location: Arctic Ocean * Campaign: PS101 (ARK-XXX/3) * Basis: Polarstern * Method/Device: Dredge, chain bag (DRG_C)
Comment:
Compositions of feldspar with cations calculated on a basis of 8 O.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventAlbers, Elmar
2Sample code/labelSample labelAlbers, Elmar
3International Generic Sample NumberIGSNAlbers, Elmar
4Silicon dioxideSiO2%Albers, ElmarElectron microprobe (EMP)
5Aluminium oxideAl2O3%Albers, ElmarElectron microprobe (EMP)
6Iron oxide, FeOFeO%Albers, ElmarElectron microprobe (EMP)
7Manganese oxideMnO%Albers, ElmarElectron microprobe (EMP)
8Magnesium oxideMgO%Albers, ElmarElectron microprobe (EMP)
9Calcium oxideCaO%Albers, ElmarElectron microprobe (EMP)
10Sodium oxideNa2O%Albers, ElmarElectron microprobe (EMP)
11Potassium oxideK2O%Albers, ElmarElectron microprobe (EMP)
12TotalTotal%Albers, ElmarElectron microprobe (EMP)
13SiliconSi# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
14AluminiumAl# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
15Iron 2+ and 3+Fe# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
16ManganeseMn# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
17MagnesiumMg# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
18CalciumCa# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
19SodiumNa# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
20PotassiumK# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
21Cations, sumCations# of ionsAlbers, ElmarElectron microprobe (EMP)cations per formula unit (pfu)
22Calcium/(Calcium+Sodium) ratioCa/(Ca+Na)Albers, ElmarCalculatedXAn = Ca / (Ca+Na)
23Sodium/(Calcium+Sodium) ratioNa/(Ca+Na)Albers, ElmarCalculatedXAb = Na / (Ca+Na)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1540 data points

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