Citation:

dsdp.proc.72.115.1983

Name: (Table 1) Basalt geochemsitry at DSDP Hole 72-516F
Published: 1983
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Basalts from Hole 516F, DSDP Leg 72 on the Rio Grande Rise are tholeiitic in character but differ from normal mid-ocean ridge basalts in the South Atlantic in higher concentrations of incompatible elements such as Ti, K, V, Sr, Ba, Zr, Nb, and light rare-earth elements and in lower concentrations of Mg, Cr, and Ni. They contrast with previously reported basalts from the Rio Grande Rise, which were highly alkalic in character. The Rio Grande Rise basalts from Hole 516F (age 84.5 Ma) are generally similar to basalts from the eastern end of the Walvis Ridge (80-100 Ma). It is suggested that they either originated, like the Walvis Ridge, from a mantle hot spot that is different from the present-day hot spot (Tristan da Cunha) and that has changed composition with time, or from a spreading center that was shallow and chemically influenced by the adjacent hot spot, similar to the present-day Mid-Atlantic Ridge near the Azores and Tristan da Cunha.

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: -30.276500 * Longitude: -35.285000

Date/Time Start: 1980-03-11T00:00:00 * Date/Time End: 1980-03-11T00:00:00

Minimum Elevation: -1313.0 m * Maximum Elevation: -1313.0 m

Event(s):

72-516F * Latitude: -30.276500 * Longitude: -35.285000 * Date/Time: 1980-03-11T00:00:00 * Elevation: -1313.0 m * Penetration: 1270.6 m * Recovery: 690.1 m * Location: South Atlantic/CONT RISE * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 127 cores; 1092.5 m cored; 9 m drilled; 63.2 % recovery

Comment:

Blanks indicate "not analyzed."

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Thompson, Geoffrey	DSDP/ODP/IODP sample designation
2	Silicon dioxide	SiO2	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
3	Titanium dioxide	TiO2	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
4	Aluminium oxide	Al2O3	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
5	Iron oxide, FeO	FeO	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	Total iron; on a volatile-free basis after ignition at 1000°C
6	Manganese oxide	MnO	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
7	Magnesium oxide	MgO	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
8	Calcium oxide	CaO	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
9	Sodium oxide	Na2O	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
10	Potassium oxide	K2O	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
11	Phosphorus pentoxide	P2O5	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
12	Total	Total	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a volatile-free basis after ignition at 1000°C
13	Iron oxide, FeO	FeO	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
14	Iron oxide, Fe2O3	Fe2O3	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
15	Water in rock	H2O	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	H2O+, structural part, similar to LOI ; On a dried (110°C) basis
16	Water in rock	H2O	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	H2O-, hydration part
17	Carbon dioxide	CO2	%	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
18	Rubidium	Rb	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
19	Scandium	Sc	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
20	Vanadium	V	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
21	Chromium	Cr	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
22	Cobalt	Co	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
23	Nickel	Ni	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
24	Copper	Cu	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
25	Zinc	Zn	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
26	Strontium	Sr	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
27	Barium	Ba	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
28	Yttrium	Y	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
29	Zirconium	Zr	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
30	Niobium	Nb	mg/kg	Thompson, Geoffrey	X-ray fluorescence (XRF)	On a dried (110°C) basis
31	Lanthanum	La	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
32	Cerium	Ce	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
33	Neodymium	Nd	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
34	Samarium	Sm	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
35	Europium	Eu	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
36	Gadolinium	Gd	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
37	Terbium	Tb	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
38	Dysprosium	Dy	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
39	Thulium	Tm	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
40	Ytterbium	Yb	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
41	Lutetium	Lu	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
42	Cobalt	Co	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
43	Chromium	Cr	mg/kg	Thompson, Geoffrey	Element analysis, neutron activation (NAA)	On a dried (110°C) basis
44	Sodium oxide	Na2O	%	Thompson, Geoffrey	Element analysis, neutron activation (NAA)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

511 data points

Data

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

1 Sample label (DSDP/ODP/IODP sample designation)	2 SiO2 [%] (On a volatile-free basis afte...)	3 TiO2 [%] (On a volatile-free basis afte...)	4 Al2O3 [%] (On a volatile-free basis afte...)	5 FeO [%] (Total iron; on a volatile-fre...)	6 MnO [%] (On a volatile-free basis afte...)	7 MgO [%] (On a volatile-free basis afte...)	8 CaO [%] (On a volatile-free basis afte...)	9 Na2O [%] (On a volatile-free basis afte...)	10 K2O [%] (On a volatile-free basis afte...)	11 P2O5 [%] (On a volatile-free basis afte...)	12 Total [%] (On a volatile-free basis afte...)	13 FeO [%] (On a dried (110°C) basis, X-r...)	14 Fe2O3 [%] (On a dried (110°C) basis, X-r...)	15 H2O [%] (H2O+, structural part, simila...)	16 H2O [%] (H2O-, hydration part, X-ray f...)	17 CO2 [%] (On a dried (110°C) basis, X-r...)	18 Rb [mg/kg] (On a dried (110°C) basis, X-r...)	19 Sc [mg/kg] (On a dried (110°C) basis, X-r...)	20 V [mg/kg] (On a dried (110°C) basis, X-r...)	21 Cr [mg/kg] (On a dried (110°C) basis, X-r...)	22 Co [mg/kg] (On a dried (110°C) basis, X-r...)	23 Ni [mg/kg] (On a dried (110°C) basis, X-r...)	24 Cu [mg/kg] (On a dried (110°C) basis, X-r...)	25 Zn [mg/kg] (On a dried (110°C) basis, X-r...)	26 Sr [mg/kg] (On a dried (110°C) basis, X-r...)	27 Ba [mg/kg] (On a dried (110°C) basis, X-r...)	28 Y [mg/kg] (On a dried (110°C) basis, X-r...)	29 Zr [mg/kg] (On a dried (110°C) basis, X-r...)	30 Nb [mg/kg] (On a dried (110°C) basis, X-r...)	31 La [mg/kg] (On a dried (110°C) basis, Ele...)	32 Ce [mg/kg] (On a dried (110°C) basis, Ele...)	33 Nd [mg/kg] (On a dried (110°C) basis, Ele...)	34 Sm [mg/kg] (On a dried (110°C) basis, Ele...)	35 Eu [mg/kg] (On a dried (110°C) basis, Ele...)	36 Gd [mg/kg] (On a dried (110°C) basis, Ele...)	37 Tb [mg/kg] (On a dried (110°C) basis, Ele...)	38 Dy [mg/kg] (On a dried (110°C) basis, Ele...)	39 Tm [mg/kg] (On a dried (110°C) basis, Ele...)	40 Yb [mg/kg] (On a dried (110°C) basis, Ele...)	41 Lu [mg/kg] (On a dried (110°C) basis, Ele...)	42 Co [mg/kg] (On a dried (110°C) basis, Ele...)	43 Cr [mg/kg] (On a dried (110°C) basis, Ele...)	44 Na2O [%] (Element analysis, neutron act...)
72-516F-126-2,143-146	49.64	2.69	16.24	13.33	0.17	4.66	10.18	2.92	0.23	0.22	100.28	8.35	5.53	1.65	4.50	7.69	3.5	38	400	40	50	54	199	114	410	276	35	185	14.4	14.2	36.0	21.0	6.3	2.2	7.9	1.1	7.3	0.58	3.1	0.38	45	42	2.83
72-516F-126-3,6-9	50.26	2.72	16.46	10.87	0.13	3.93	11.96	3.00	0.30	0.11	99.74	5.75	5.69	1.44	3.89	6.19	7.4		405	36	40	51	219	101	686	131	37	189	14.1
72-516F-126-3,41-44	50.43	2.82	16.19	11.32	0.14	4.21	11.13	2.99	0.23	0.15	99.61	6.51	5.35	1.40	3.57	5.56	4.6	41	416	34	44	49	198	103	446	178	38	187	14.0	15.6	37.9	21.3	7.0	2.3	8.7	1.3	7.4	0.59	2.8	0.37	39	37	3.02
72-516F-127-2,83-88	48.92	2.45	16.86	14.66	0.19	4.41	8.11	2.46	1.12	0.38	99.56	7.60	7.85	1.52	3.61	9.35	25.3		385	39	54	61	123	118	291	91	41	152	12.8
72-516F-127-3,68-72	49.45	2.63	16.45	12.76	0.11	4.99	10.04	2.95	0.26	0.24	99.88	7.70	5.62	1.44	3.63	7.91	4.2	39	400	35	62	57	226	104	387	157	34	181	13.2	14.6	36.1	19.3	6.6	2.2	10.0	1.1	6.7	0.55	3.0	0.38	57	38	3.00
72-516F-127-3,97-102	49.96	2.63	15.66	12.32	0.12	5.08	10.81	2.90	0.22	0.20	99.91	8.02	4.79	1.34	3.22	6.52	3.6		393	34	57	52	198	113	403	168	37	186	14.7
72-516F-127-4,44-48	48.68	2.51	15.84	13.77	0.20	5.55	10.29	2.61	0.22	0.25	99.92	9.96	4.23	1.18	2.48	7.71	2.9		379	30	64	58	195	129	351	126	35	184	14.2
72-516F-127-4,60-63	51.05	2.27	13.89	13.25	0.23	5.91	10.53	2.29	0.32	0.21	99.95	9.87	3.76	0.84	1.22	3.91	9.4	37	364	28	43	48	185	102	278	192	40	172	13.2	15.2	36.8	18.9	6.5	2.1	7.7	1.4	7.0	0.63	3.3	0.44	39	30	2.74
72-516F-128-1,25-28	51.86	2.30	14.16	12.55	0.19	5.66	10.63	2.39	0.34	0.20	100.28	9.13	3.80	0.83	0.93	3.07	9.8		356	32	41	48	188	130	271	165	42	176	12.9
72-516F-128-1,122-126	51.25	2.23	13.93	13.40	0.23	5.85	10.44	2.27	0.31	0.22	100.13	10.07	3.70	0.88	1.25	4.03	8.9	35	341	28	47	51	182	113	266	157	40	168	13.4	15.2	35.2	20.3	6.5	2.1	7.3	1.2	7.6	0.63	3.4	0.43	42	33	2.70
72-516F-128-2,51-56	51.77	2.37	14.13	12.65	0.19	5.70	10.64	2.32	0.32	0.18	100.27	9.34	3.68	0.81	1.07	2.92	8.4		369	32	46	52	187	112	272	207	41	172	12.7
72-516F-128-2,130-135	49.20	2.50	14.84	14.37	0.25	5.88	10.14	2.26	0.23	0.26	99.93	9.38	5.55	1.00	1.92	5.24	3.8	39	373	30	47	50	202	117	281	158	35	181	14.6	13.3	34.0	19.7	6.4	2.3	9.0	1.2	6.8	0.46	2.8	0.37	43	40	2.82
72-516F-128-3,44-48	51.81	2.41	13.77	13.02	0.20	5.51	10.47	2.30	0.39	0.20	100.08	9.42	4.00	0.80	0.72	2.56	11.3		358	29	46	48	198	107	269	171	43	182	13.6
72-516F-128-3,73-75	51.62	2.35	13.99	12.74	0.19	5.60	10.57	2.35	0.34	0.20	99.95	9.39	3.72	0.81	0.82	2.55	9.3	36	366	28	49	50	186	103	266	202	39	169	13.3	14.3	36.9	19.7	6.1	2.1	8.2	1.2	7.8	0.58	3.3	0.43	43	31	2.70