Citation:

odp.proc.sr.163.109.1999

Name: (Table 1) Major and trace element composition of basalts from ODP Leg 163 sites and Hole 152-917A
Published: 1999
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

During Leg 163, in the Southeast Greenland margin, drilling penetrated a thick succession of volcanic rocks that erupted during breakup of the North Atlantic in the early Tertiary. Samples recovered during Leg 163 supplement the samples recovered during Leg 152 from the transect across the volcanic margin at 63°N. During Leg 163, drilling at Site 989 was intended to recover the oldest part of the continental prebreakup series, and drilling at Site 990 was intended to penetrate the transition zone from synbreakup, compositionally variable volcanic products, to postbreakup volcanics with a limited compositional range and a depleted chemical character similar to mid-ocean-ridge basalts (oceanic character). All the lava flows recovered from Sites 989 and 990, however, have an oceanic chemical character with low contents of incompatible elements and high contents of Sc. A dikelet from Site 990 and a previously drilled dike from Site 917 are likewise oceanic. We consider that the two drilled lava flows from Site 989 were emplaced after breakup despite their setting on the innermost part of the continental margin. The succession at Site 990 consists of 13 units of lava flow that show a slight compositional development upsection with Mg# decreasing from ~62 to ~49. This variation is within the limits known from the slightly younger oceanic succession drilled earlier at Site 918, in which the variation is thought to reflect fractionation in magma chambers in the oceanic crust. The reestablishment of magma chambers after the breakup must have been achieved during the interval that the short, undrilled lava succession between uppermost Site 917 and lowermost Site 990 was deposited.

All the lava flows from Sites 989 and 990, except perhaps one (Unit 989-1), are crustally contaminated, as judged from their high Ba/Zr (>0.42) ratios. The two dikes appear to be uncontaminated. The contamination most likely took place in magma chambers in the young oceanic rift, which, at this early stage of spreading, could still have contained fragments of continental crust. Most lavas were probably erupted within the rift and flowed subaerially away from it toward the edge of the continent. The dikes show that lateral injection of magma into the continental crust also took place without resulting in crustal contamination. The oceanic lava flows at Site 989 on the innermost margin have probably been erupted through such laterally injected dikes. The primary magma for the postbreakup rocks is estimated to have contained ~18% MgO. After fractionation of 30 mol% olivine (Fo91-82), it shifted to gabbro fractionation, and the magmas started to erupt. The modal composition of the gabbroic cumulate is 8% olivine (Fo82-74), 50% plagioclase (An76-66), and 42% clinopyroxene (Fs9-15). The erupted oceanic magmas are produced by <24 mol% gabbro fractionation, with an average of 14%. Thus, geochemical modeling indicates that the oceanic crust is composed of olivine cumulates (30%), gabbro cumulates (14%), and melts (lava flows and dikes, 56%), which is in accordance with models based on geophysical data.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Median Latitude: 63.502375 * Median Longitude: -39.852900 * South-bound Latitude: 63.472800 * West-bound Longitude: -39.901900 * North-bound Latitude: 63.522500 * East-bound Longitude: -39.780000

Date/Time Start: 1993-10-10T02:00:00 * Date/Time End: 1995-10-01T13:00:00

Minimum DEPTH, sediment/rock: 12.12 m * Maximum DEPTH, sediment/rock: 340.03 m

Event(s):

152-917A * Latitude: 63.491700 * Longitude: -39.827800 * Date/Time Start: 1993-10-10T02:00:00 * Date/Time End: 1993-10-26T00:59:00 * Elevation: -508.0 m * Penetration: 874.9 m * Recovery: 454.88 m * Location: Greenland Sea * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 110 cores; 874.9 m cored; 0 m drilled; 52 % recovery

163-989A * Latitude: 63.522500 * Longitude: -39.901900 * Date/Time Start: 1995-09-16T10:55:00 * Date/Time End: 1995-09-17T18:00:00 * Elevation: -459.5 m * Penetration: 21.4 m * Recovery: 16.02 m * Location: Greenland Sea * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 21.4 m cored; 0 m drilled; 74.9 % recovery

163-989B * Latitude: 63.522500 * Longitude: -39.901900 * Date/Time Start: 1995-09-17T18:00:00 * Date/Time End: 1995-09-20T13:30:00 * Elevation: -459.5 m * Penetration: 84.2 m * Recovery: 73.96 m * Location: Greenland Sea * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 80.2 m cored; 0 m drilled; 92.2 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	Sample code/label	Sample label		Larsen, Lotte M	DSDP/ODP/IODP sample designation
6	Piece	Piece		Larsen, Lotte M
7	DEPTH, sediment/rock	Depth sed	m			Geocode – mbsf
8	Lithologic unit/sequence	Unit		Larsen, Lotte M
9	Silicon dioxide	SiO2	%	Larsen, Lotte M	X-ray fluorescence (XRF)
10	Titanium dioxide	TiO2	%	Larsen, Lotte M	X-ray fluorescence (XRF)
11	Aluminium oxide	Al2O3	%	Larsen, Lotte M	X-ray fluorescence (XRF)
12	Iron oxide, Fe2O3	Fe2O3	%	Larsen, Lotte M	X-ray fluorescence (XRF)
13	Iron oxide, FeO	FeO	%	Larsen, Lotte M	Titration
14	Manganese oxide	MnO	%	Larsen, Lotte M	X-ray fluorescence (XRF)
15	Magnesium oxide	MgO	%	Larsen, Lotte M	X-ray fluorescence (XRF)
16	Calcium oxide	CaO	%	Larsen, Lotte M	X-ray fluorescence (XRF)
17	Sodium oxide	Na2O	%	Larsen, Lotte M	Atomic absorption spectrometry (AAS)
18	Potassium oxide	K2O	%	Larsen, Lotte M	X-ray fluorescence (XRF)
19	Phosphorus pentoxide	P2O5	%	Larsen, Lotte M	X-ray fluorescence (XRF)
20	Volatiles	Volat	%	Larsen, Lotte M
21	Elements, total	Total	%	Larsen, Lotte M
22	Magnesium number	Mg#		Larsen, Lotte M
23	Niobium	Nb	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
24	Zirconium	Zr	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
25	Yttrium	Y	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
26	Strontium	Sr	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
27	Rubidium	Rb	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
28	Thorium	Th	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
29	Lead	Pb	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
30	Lanthanum	La	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
31	Cerium	Ce	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
32	Neodymium	Nd	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
33	Zinc	Zn	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
34	Copper	Cu	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
35	Nickel	Ni	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
36	Cobalt	Co	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
37	Chromium	Cr	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
38	Vanadium	V	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
39	Barium	Ba	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
40	Scandium	Sc	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)
41	Gallium	Ga	mg/kg	Larsen, Lotte M	X-ray fluorescence (XRF)

License:

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

Size:

1222 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Sample label	6 Piece	7 Depth sed [m]	8 Unit	9 SiO2 [%]	10 TiO2 [%]	11 Al2O3 [%]	12 Fe2O3 [%]	13 FeO [%]	14 MnO [%]	15 MgO [%]	16 CaO [%]	17 Na2O [%]	18 K2O [%]	19 P2O5 [%]	20 Volat [%]	21 Total [%]	22 Mg#	23 Nb [mg/kg]	24 Zr [mg/kg]	25 Y [mg/kg]	26 Sr [mg/kg]	27 Rb [mg/kg]	28 Th [mg/kg]	29 Pb [mg/kg]	30 La [mg/kg]	31 Ce [mg/kg]	32 Nd [mg/kg]	33 Zn [mg/kg]	34 Cu [mg/kg]	35 Ni [mg/kg]	36 Co [mg/kg]	37 Cr [mg/kg]	38 V [mg/kg]	39 Ba [mg/kg]	40 Sc [mg/kg]	41 Ga [mg/kg]
163-989A	63.5225	-39.9019	-460	163-989A-2R-3,68-81	3	12.12	989-1	50.22	1.064	13.68	4.84	8.03	0.22	7.27	11.60	2.25	0.078	0.116	1.13	100.50	54.28	2.4	62	30	74	1.1	0.0	0.0	4	8	8	98	195	73		50	383	15	48
163-989B	63.5225	-39.9019	-460	163-989B-5R-2,41-47	3A	22.60	989-1	50.18	1.084	13.61	4.73	8.38	0.23	7.14	11.49	2.16	0.064	0.109	1.18	100.35	53.35	2.7	58	28	71	0.6	1.0	1.6	1	9	9	102	211	69	61	49	413	19	53	16
163-989B	63.5225	-39.9019	-460	163-989B-10R-2,9-15	2	65.92	989-1	49.91	1.006	13.71	5.39	7.29	0.20	7.94	11.20	2.05	0.057	0.089	1.34	100.18	56.97	1.9	45	24	69	0.9	0.7	0.3	5	7	4	88	195	80	56	54	409	19	52	16
163-989B	63.5225	-39.9019	-460	163-989B-10R-7,59-64	5A	73.32	989-1	49.99	1.033	13.41	6.11	7.01	0.20	8.03	10.67	2.11	0.117	0.095	1.33	100.10	56.50	2.1	52	25	68	1.6	0.4	0.0	2	7	7	91	190	75	64	54	390	17	54	17
163-989B	63.5225	-39.9019	-460	163-989B-11R-1,58-64	7	74.68	989-2	50.43	0.914	14.17	2.64	8.71	0.21	7.87	12.39	1.95	0.099	0.090	0.77	100.24	58.94	2.2	47	24	84	1.7	0.6	0.2	2	10	7	85	151	96	51	219	328	34	51	16
163-989B	63.5225	-39.9019	-460	163-989B-13R-2,120-126	16	81.30	989-2	50.62	0.901	14.17	2.31	8.95	0.20	7.65	12.50	1.88	0.056	0.087	0.81	100.13	58.37	2.0	46	23	83	1.3	0.6	25.5	4	7	6	86	151	103	50	229	327	21	52	15
163-990A	63.4728	-39.7800	-542	163-990A-1R-1,71-75	11	182.71	990-clast	45.66	1.225	17.70	4.16	4.50	0.29	5.23	11.58	2.51	1.349	0.203	4.91	99.32	56.19	1.7	67	49	185	5.5	0.6	102.1	8	24	21	104	177	322	52	1825	378	107	57	19
163-990A	63.4728	-39.7800	-542	163-990A-1R-1,90-98	14	182.90	990-clast	43.09	1.214	17.98	5.29	6.26	0.27	6.05	8.41	2.38	1.374	0.175	6.76	99.26	52.63	1.8	65	53	162	8.4	0.0	1.1	8	23	20	79	192	280	43	1845	400	89	67	18
163-990A	63.4728	-39.7800	-542	163-990A-1R-1,137-141	20	183.37	990-clast	49.28	1.387	19.94	5.55	4.44	0.08	4.51	8.22	3.41	0.839	0.244	1.95	99.86	49.15	1.9	80	22	512	5.1	0.0	3.5	11	29	19	85	115	71	27	42	312	452	49	22
163-990A	63.4728	-39.7800	-542	163-990A-1R-2,27-31	6	183.77	990-clast	48.17	2.501	18.58	5.58	4.62	0.16	4.30	9.05	3.16	1.067	0.405	2.11	99.71	47.45	19.2	118	38	488	13.1	1.6	1.7	21	45	36	128	115	72	29	148	408	405	50	23
163-990A	63.4728	-39.7800	-542	163-990A-1R-2,56-62	11	184.06	990-clast	50.13	1.593	20.60	4.47	4.06	0.10	3.74	7.36	3.63	1.382	0.310	1.97	99.33	48.32	2.5	94	29	555	7.5	0.4	3.5	14	35	26	80	126	79	31	64	363	512	55	26
163-990A	63.4728	-39.7800	-542	163-990A-3R-1,10-18	2	191.70	990-clast	50.59	1.591	20.88	5.14	3.37	0.11	3.33	7.69	3.90	1.323	0.353	1.63	99.89	45.70	2.6	87	26	715	7.1	0.9	3.5	12	37	25	108	107	56	26	53	354	613	48	24
163-990A	63.4728	-39.7800	-542	163-990A-3R-1,60-66	7	192.20	990-clast	49.62	1.118	14.73	4.18	7.65	0.18	7.57	11.14	2.46	0.142	0.102	1.16	100.04	57.30	2.0	57	28	82	1.8	0.9	0.5	2	6	7	101	135	99	81	110	395	28	62	18
163-990A	63.4728	-39.7800	-542	163-990A-5R-4,79-85	3	216.89	990-1	51.16	1.256	13.80	4.95	8.44	0.20	6.21	10.35	2.46	0.268	0.126	0.92	100.13	49.32	3.5	72	33	98	2.3	0.3	0.9	4	15	10	104	190	54	53	36	394	59	55	18
163-990A	63.4728	-39.7800	-542	163-990A-7R-3,34-39	1A	224.64	990-1	51.09	1.198	13.57	3.90	9.69	0.23	6.44	10.33	2.21	0.224	0.123	1.15	100.14	49.65	3.4	67	33	93	2.0	0.9	1.2	4	11	8	106	102	51	49	36	371	60	51	17
163-990A	63.4728	-39.7800	-542	163-990A-8R-4,26-32	3A	235.68	990-2	50.61	0.959	15.16	4.66	6.90	0.21	6.99	11.26	2.12	0.226	0.109	1.14	100.35	56.03	2.4	56	25	113	1.9	0.9	1.2	4	13	8	88	69	70	44	128	314	58	50	17
163-990A	63.4728	-39.7800	-542	163-990A-9R-3,76-82	3C	244.33	990-2	50.88	0.964	15.33	2.89	8.06	0.19	6.83	11.58	2.16	0.194	0.098	0.94	100.09	56.45	2.1	57	25	119	1.6	0.3	1.8	5	12	7	85	115	72	46	129	309	69	46	16
163-990A	63.4728	-39.7800	-542	163-990A-13R-3,97-103	9A	263.93	990-3A	49.40	0.938	15.02	6.21	5.84	0.21	7.19	11.65	2.15	0.193	0.091	1.18	100.06	55.98	2.0	53	26	90	2.6	1.2	0.7	3	9	7	87	91	77	48	132	332	34	49	16
163-990A	63.4728	-39.7800	-542	163-990A-15R-2,68-74	2B	271.49	990-3A	50.63	0.942	14.96	2.36	8.54	0.20	7.05	11.73	2.09	0.140	0.092	0.94	99.68	57.21	2.0	52	25	90	1.5	0.6	3.1	2	11	7	86	119	74	47	132	320	32	50	17
163-990A	63.4728	-39.7800	-542	163-990A-15R-5,8-14	1	275.05	990-3B	50.19	0.982	15.15	4.87	6.86	0.22	6.78	11.60	2.15	0.301	0.092	1.05	100.26	54.95	2.1	53	27	87	3.4	0.5	0.8	4	11	6	93	75	84	53	136	358	37	54	17
163-990A	63.4728	-39.7800	-542	163-990A-16R-3,111-115	5	278.82	990-4	50.77	0.980	14.67	3.79	7.37	0.19	7.07	11.42	2.13	0.140	0.103	1.32	99.95	56.99	2.2	56	26	107	1.5	0.0	1.1	4	14	10	89	131	87	50	156	323	52	50	17
163-990A	63.4728	-39.7800	-542	163-990A-17R-3,109-115	2C	282.97	990-5	50.68	0.959	14.60	3.33	7.98	0.22	7.18	11.78	2.20	0.081	0.100	0.91	100.01	56.94	2.4	56	25	113	0.4	0.2	19.1	5	13	10	88	140	84	48	158	334	50	49	18
163-990A	63.4728	-39.7800	-542	163-990A-18R-6,76-82	3A	296.10	990-6	50.33	0.968	14.29	2.89	7.71	0.22	8.02	12.10	1.98	0.114	0.101	1.13	99.85	61.15	2.7	49	23	107	1.0	0.6	1.1	5	8	7	83	107	96	48	212	322	57	52	16
163-990A	63.4728	-39.7800	-542	163-990A-19R-5,64-70	9	305.16	990-7	50.36	0.939	14.32	3.08	7.77	0.21	8.09	11.68	2.03	0.111	0.083	1.20	99.87	60.82	2.1	49	25	73	0.7	0.2	1.1	4	8	6	89	167	97	50	214	343	26	57	17
163-990A	63.4728	-39.7800	-542	163-990A-21R-1,86-92	2E	309.06	990-8	50.16	0.738	16.45	3.61	5.92	0.18	7.09	11.62	1.95	0.141	0.073	1.90	99.84	61.00	1.7	40	18	104	1.2	0.3	0.6	1	7	6	64	79	93	40	239	251	276	41	16
163-990A	63.4728	-39.7800	-542	163-990A-21R-4,77-82	4B	313.38	990-9	50.93	0.877	15.03	3.67	6.21	0.20	7.78	11.62	2.15	0.110	0.086	1.51	100.18	62.32	2.0	47	22	94	0.4	0.9	0.8	3	10	9	72	100	125	51	250	302	37	51	15
163-990A	63.4728	-39.7800	-542	163-990A-22R-1,47-53	4	318.37	990-10	50.23	0.751	16.00	4.41	5.70	0.17	7.14	11.22	1.93	0.159	0.078	2.10	99.90	59.88	1.7	41	18	88	2.7	0.5	0.2	4	9	6	68	57	108	44	249	253	26	41	16
163-990A	63.4728	-39.7800	-542	163-990A-22R-3,24-30	2A	321.06	990-11	50.88	0.859	14.18	4.78	6.56	0.20	7.57	10.27	1.94	0.212	0.083	2.43	99.95	58.49	1.6	44	22	81	3.2	0.5	0.0	3	8	5	78	82	113	49	216	266	27	41	15
163-990A	63.4728	-39.7800	-542	163-990A-22R-6,68-73	1D	325.63	990-11	50.36	0.859	15.83	3.35	6.59	0.22	7.47	12.02	2.14	0.088	0.090	1.13	100.15	61.12	2.1	46	22	98	1.1	0.3	1.0	3	12	7	73	141	98	46	230	295	37	48	16
163-990A	63.4728	-39.7800	-542	163-990A-23R-2,41-47	2B	329.17	990-11	50.98	0.777	15.99	5.25	4.80	0.17	6.67	11.52	2.09	0.222	0.092	1.56	100.13	58.63	1.4	42	21	96	1.8	0.5	0.6	2	10	6	71	78	83	43	229	257	80	43	17
163-990A	63.4728	-39.7800	-542	163-990A-23R-4,132-138	10B	332.96	990-12	50.21	0.755	16.26	3.92	5.96	0.19	7.13	11.62	1.96	0.113	0.076	1.91	100.11	60.32	1.5	40	20	91	1.9	0.5	1.0	3	9	6	70	54	103	44	241	255	24	42	16
163-990A	63.4728	-39.7800	-542	163-990A-24R-1,15-18	3	337.25	990-dike	49.57	1.757	14.64	4.91	7.02	0.20	6.02	10.84	2.36	0.286	0.161	1.52	99.29	51.55	3.1	102	37	112	2.6	1.1	0.7	4	13	12	121	252	72	47	98	471	10	65	20
163-990A	63.4728	-39.7800	-542	163-990A-24R-3,16-20	2A	340.03	990-13	50.58	0.799	14.04	4.39	6.76	0.19	7.84	11.13	1.86	0.253	0.064	2.15	100.07	59.71	1.2	39	20	71	4.3	0.6	0.0	0	8	4	84	56	104	50	247	301	18	51	15
152-917A	63.4917	-39.8278	-508	152-917A-26R-2,83-89	13	213.10	917-39 (dike)	49.89	0.816	13.83	5.95	5.91	0.17	7.31	11.82	2.05	0.495	0.036	1.44	99.71	56.78	1.2	39	25	70	29.0	0.9	1.1	2	9	6	86	69	73	60	128	314	13	52	16