Citation:

PANGAEA.756102, Supplement to: Emelyanov, EM et al. (1985): Geology of the South Atlantic Ridge in the vicinity of 20-30° S. Oceanology, 25(5), 608-614

Name: Chemical composition of Late Quaternary sediments from the rift zone of the South Atlantic Ridge
Published: 1985
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Detailed geological, geophysical and lithological investigations of a section in the South Atlantic Ridge between 20°S and 30°S were made during Cruise 7 of R/V Professor Shtokman in 1982. The ridge is dissected by faults running across and along its strike. The bottom of the rift valley is at depth 3600-3800 m, and summits of seamounts are at depths 1800-2200 m. Aphyric and slightly porphyritic olivine-plagioclase basalts occur extensively in the rift zone, while highly porphyritic plagioclase basalts occur in the southern part of the area. All basalts are of the shallow depth central type representing plagioclase depth facies (15-30 km). Sediments (mainly foraminiferal-coccolithic oozes) occur in some depression traps.

Project(s):

Archive of Ocean Data (ARCOD)

Coverage:

Latitude: -27.165000 * Longitude: -13.938333

Minimum DEPTH, sediment/rock: 0.865 m * Maximum DEPTH, sediment/rock: 2.220 m

Event(s):

PS-841 * Latitude: -27.165000 * Longitude: -13.938333 * Elevation: -3710.0 m * Location: South Atlantic Ocean * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	DEPTH, sediment/rock	Depth sed	m		Geocode
2	Depth, top/min	Depth top	m	Emelyanov, Emelyan M
3	Depth, bottom/max	Depth bot	m	Emelyanov, Emelyan M
4	Sediment type	Sediment		Emelyanov, Emelyan M
5	Size fraction < 0.010 mm	<10 µm	%	Emelyanov, Emelyan M
6	Calcium carbonate	CaCO3	%	Emelyanov, Emelyan M
7	Carbon, organic, total	TOC	%	Emelyanov, Emelyan M
8	Silicon dioxide	SiO2	%	Emelyanov, Emelyan M	total
9	Aluminium	Al	%	Emelyanov, Emelyan M
10	Iron	Fe	%	Emelyanov, Emelyan M
11	Manganese	Mn	%	Emelyanov, Emelyan M
12	Titanium	Ti	%	Emelyanov, Emelyan M
13	Phosphorus	P	%	Emelyanov, Emelyan M
14	Potassium	K	%	Emelyanov, Emelyan M
15	Sodium	Na	%	Emelyanov, Emelyan M
16	Magnesium	Mg	%	Emelyanov, Emelyan M
17	Copper	Cu	mg/kg	Emelyanov, Emelyan M
18	Zinc	Zn	mg/kg	Emelyanov, Emelyan M
19	Nickel	Ni	mg/kg	Emelyanov, Emelyan M
20	Chromium	Cr	mg/kg	Emelyanov, Emelyan M
21	Lithium	Li	mg/kg	Emelyanov, Emelyan M
22	Rubidium	Rb	mg/kg	Emelyanov, Emelyan M

License:

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

Size:

154 data points

Data

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

1 Depth sed [m]	2 Depth top [m]	3 Depth bot [m]	4 Sediment	5 <10 µm [%]	6 CaCO3 [%]	7 TOC [%]	8 SiO2 [%]	9 Al [%]	10 Fe [%]	11 Mn [%]	12 Ti [%]	13 P [%]	14 K [%]	15 Na [%]	16 Mg [%]	17 Cu [mg/kg]	18 Zn [mg/kg]	19 Ni [mg/kg]	20 Cr [mg/kg]	21 Li [mg/kg]	22 Rb [mg/kg]
0.865	0.00	1.73	high calcareous coccolithic-foraminiferal ooze	73.10	82.32	0.22	8.6	1.18	0.96	0.15	0.11	0.03	0.31	1.98	0.37	40	43	37	24	21	24
1.750	1.73	1.77	low-manganese hydrothermal (?) mud	53.42	20.65	0.29			0.44	0.70	0.06	0.03	0.25	3.78	0.75	126	61	72	10	22	12
1.765	1.76	1.77	low-manganese hydrothermal (?) mud		18.01	0.01			0.46	0.70	0.03	0.01	0.28	4.07	0.85	126	49	72	12	26	9
1.785	1.77	1.80	high calcareous coccolithic-foraminiferal ooze	82.77	75.94	0.16	14.0	1.90	1.40	0.08	0.09	0.03	0.46	1.98	0.66	36	36	38	20	21	26
1.845	1.83	1.86	low-manganese hydrothermal (?) calcareous mud		52.03	0.33			0.84	0.24	0.05	0.02	0.21	2.75	0.61	62	29	42	16	24	13
1.895	1.88	1.91	low-manganese hydrothermal (?) mud		39.05	0.24			0.68	0.42	0.05	0.02	0.17	2.14	0.54	73	36	32	16	20	10
1.925	1.91	1.94	low-manganese hydrothermal (?) mud		16.76	0.27			1.08	0.76	0.03	0.02	0.20	3.49	0.78	142	84	69	22	31	10
2.220	1.95	2.49	high calcareous coccolithic-foraminiferal ooze	79.19	82.33	0.24	9.2	1.31	0.96	0.11	0.11	0.04	0.27	2.07	0.34	37	40	28	30	18	25