Citation:

PANGAEA.972381 (DOI registration in progress)

Name: Major elemental compositions of amphibole in mafic rocks from the Langseth Ridge (Gakkel Ridge)
Published: 2024
License: https://creativecommons.org/licenses/by/4.0/
Keywords: basalt; Gakkel ridge; Geochemistry; Mid-Ocean Ridge; Ultraslow-spreading; Volcanic center

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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:

Latitude: 86.041667 * Longitude: 30.080000

Date/Time Start: 2001-08-27T21:54:00 * Date/Time End: 2001-08-28T00:15:00

Minimum Elevation: -4531.0 m * Maximum Elevation: -4531.0 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: * Basis: Healy * Method/Device: Dredge (DRG) * Comment: MAPR/~1000 lbs of greenstone and old basalt gravel, quartzite; sponges; MAPR small LSS peak ~3400 m.

Comment:

Compositions of amphibole with cations calculated on a basis of 23 O.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Albers, Elmar
2	International Generic Sample Number	IGSN		Albers, Elmar
3	Silicon dioxide	SiO2	%	Albers, Elmar	Electron microprobe (EMP)
4	Titanium dioxide	TiO2	%	Albers, Elmar	Electron microprobe (EMP)
5	Aluminium oxide	Al2O3	%	Albers, Elmar	Electron microprobe (EMP)
6	Iron oxide, FeO	FeO	%	Albers, Elmar	Electron microprobe (EMP)
7	Manganese oxide	MnO	%	Albers, Elmar	Electron microprobe (EMP)
8	Magnesium oxide	MgO	%	Albers, Elmar	Electron microprobe (EMP)
9	Calcium oxide	CaO	%	Albers, Elmar	Electron microprobe (EMP)
10	Sodium oxide	Na2O	%	Albers, Elmar	Electron microprobe (EMP)
11	Potassium oxide	K2O	%	Albers, Elmar	Electron microprobe (EMP)
12	Total	Total	%	Albers, Elmar	Electron microprobe (EMP)
13	Silicon	Si	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
14	Titanium	Ti	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
15	Aluminium	Al	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
16	Iron 2+ and 3+	Fe	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
17	Manganese	Mn	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
18	Magnesium	Mg	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
19	Calcium	Ca	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
20	Sodium	Na	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
21	Potassium	K	# of ions	Albers, Elmar	Electron microprobe (EMP)	cations per formula unit (pfu)
22	Cations, sum	Cations	# of ions	Albers, Elmar	Calculated	cations per formula unit (pfu)
23	Magnesium/(Magnesium+Iron) ratio	Mg/(Mg+Fe)		Albers, Elmar	Calculated	XMg = Mg / (Mg+Fe)

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

321 data points

Data

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

1 Sample label	2 IGSN	3 SiO2 [%]	4 TiO2 [%]	5 Al2O3 [%]	6 FeO [%]	7 MnO [%]	8 MgO [%]	9 CaO [%]	10 Na2O [%]	11 K2O [%]	12 Total [%]	13 Si [# of ions]	14 Ti [# of ions]	15 Al [# of ions]	16 Fe [# of ions]	17 Mn [# of ions]	18 Mg [# of ions]	19 Ca [# of ions]	20 Na [# of ions]	21 K [# of ions]	22 Cations [# of ions]	23 Mg/(Mg+Fe)
HLY0102/D46-39A	https://doi.org/10.58052/IEGAK000H	55.04	0.09	1.81	11.49	1.00	16.59	12.27	0.25	0.04	98.68	7.801	0.010	0.302	1.362	0.120	3.505	1.863	0.069	0.007	15.054	0.720
HLY0102/D46-39A	https://doi.org/10.58052/IEGAK000H	53.92	0.13	2.24	12.84	0.79	15.65	12.16	0.36	0.04	98.18	7.740	0.014	0.379	1.541	0.096	3.349	1.870	0.100	0.007	15.103	0.685
HLY0102/D46-39A*	https://doi.org/10.58052/IEGAK000H	42.09	0.06	10.05	12.08	0.49	21.42	5.53	0.31	0.06	92.18	6.414	0.007	1.805	1.540	0.063	4.866	0.903	0.092	0.012	15.712	0.760
HLY0102/D46-39A*	https://doi.org/10.58052/IEGAK000H	43.96	0.29	9.50	13.85	0.56	16.42	8.82	0.49	0.03	93.97	6.662	0.033	1.697	1.755	0.072	3.710	1.432	0.144	0.006	15.519	0.679
HLY0102/D46-39A	https://doi.org/10.58052/IEGAK000H	52.75	0.08	3.36	11.74	0.51	15.99	12.20	0.45	0.06	97.18	7.618	0.009	0.572	1.418	0.062	3.443	1.888	0.126	0.011	15.150	0.708
HLY0102/D46-39A	https://doi.org/10.58052/IEGAK000H	52.80	0.13	3.37	12.44	1.98	14.93	12.34	0.39	0.07	98.56	7.592	0.014	0.571	1.496	0.241	3.200	1.901	0.109	0.013	15.150	0.681
HLY0102/D46-39A	https://doi.org/10.58052/IEGAK000H	50.34	0.66	3.85	11.24	1.47	15.85	11.27	0.48	0.05	95.30	7.446	0.073	0.671	1.390	0.184	3.495	1.786	0.138	0.009	15.203	0.715
HLY0102/D46-39A*	https://doi.org/10.58052/IEGAK000H	45.52	0.08	7.24	10.81	0.64	20.43	7.78	0.37	0.07	92.95	6.855	0.009	1.285	1.361	0.082	4.586	1.255	0.108	0.013	15.555	0.771
HLY0102/D46-39B	https://doi.org/10.58052/IEGAK000H	50.65	0.03	3.68	12.55	0.66	17.08	10.50	0.37	0.02	95.65	7.457	0.003	0.639	1.545	0.082	3.749	1.656	0.106	0.004	15.255	0.708
HLY0102/D46-39B	https://doi.org/10.58052/IEGAK000H	51.00	0.08	2.04	13.83	0.60	14.51	11.44	0.37	0.02	94.05	7.697	0.009	0.363	1.746	0.077	3.265	1.850	0.108	0.004	15.138	0.652
HLY0102/D46-39B*	https://doi.org/10.58052/IEGAK000H	39.77	0.06	12.46	15.29	0.58	18.99	5.64	0.16	0.02	92.98	6.120	0.007	2.260	1.968	0.076	4.357	0.930	0.048	0.004	15.769	0.689
HLY0102/D46-39B	https://doi.org/10.58052/IEGAK000H	54.09	0.10	2.27	10.12	0.68	17.89	12.68	0.33	0.03	98.36	7.664	0.011	0.379	1.199	0.082	3.779	1.925	0.091	0.005	15.155	0.759
HLY0102/D46-39B	https://doi.org/10.58052/IEGAK000H	51.85	0.07	2.87	17.52	0.61	13.28	12.01	0.46		98.85	7.573	0.008	0.494	2.140	0.075	2.891	1.879	0.130	0.000	15.210	0.575
HLY0102/D46-39B	https://doi.org/10.58052/IEGAK000H	51.73	0.12	2.69	16.31	0.71	13.57	12.13	0.38	0.04	97.76	7.606	0.013	0.466	2.006	0.088	2.974	1.911	0.108	0.008	15.191	0.597