Citation:

PANGAEA.753707, Supplement to: Soldatov, AV; Murdmaa, IO (1970): The mineral composition of the deposits in the Romanche gap. Oceanology, 10, 375-381

Name: (Table 1) Mineral composition of sand- and silt-sized fractions of bottom sediments from the Romanche Trench
Published: 1970
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

A study was made of mineral composition of sand- and silt-sized fractions of recent clastic (riftogenic) sediments and solidified deposits collected from the bottom of the Romanche Trench during the first voyage of R/V Akademik Kurchatov. Similarity between mineral compositions of sediments and bedrocks (ultrabasites, gabbroids, diabases) was established. This similarity is a basis for considering the mineral complex of the deposits that have been derived from the bedrocks of the trench slopes, and have formed due to their submarine denudation accompanied by tectonic crushing. The same mineral composition was found in pieces of older consolidated deposits; this suggests that conditions of sedimentation similar to those at recent times have existed for a long time in the Romanche Trench.

Project(s):

Archive of Ocean Data (ARCOD)

Coverage:

Median Latitude: -0.183340 * Median Longitude: -18.456660 * South-bound Latitude: -0.267000 * West-bound Longitude: -18.717000 * North-bound Latitude: 0.067000 * East-bound Longitude: -18.333000

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 1.650 m

Event(s):

AK1-5GR * Latitude: 0.067000 * Longitude: -18.717000 * Elevation: -4070.0 m * Location: Romanche Trench * Campaign: * Basis: Akademik Kurchatov * Method/Device: Grab (GRAB)

AK1-7DRG * Latitude: -0.267000 * Longitude: -18.333000 * Elevation: -7200.0 m * Location: Romanche Trench * Campaign: * Basis: Akademik Kurchatov * Method/Device: Dredge (DRG)

AK1-7GC * Latitude: -0.267000 * Longitude: -18.333000 * Elevation: -7200.0 m * Location: Romanche Trench * Campaign: * Basis: Akademik Kurchatov * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	DEPTH, sediment/rock	Depth sed	m		Geocode
6	Depth, top/min	Depth top	m	Soldatov, A V
7	Depth, bottom/max	Depth bot	m	Soldatov, A V
8	Size fraction	Size fraction		Soldatov, A V
9	Heavy minerals	HM	%	Soldatov, A V
10	Augite-diopside	Aug-Di	%	Soldatov, A V
11	Enstatite-bronzite	En-bro	%	Soldatov, A V
12	Hypersthene	Hyp	%	Soldatov, A V
13	Olivine	Ol	%	Soldatov, A V
14	Epidote-zoisite	Ep-Zo	%	Soldatov, A V
15	Hornblende	Hbl	%	Soldatov, A V
16	Hornblende, basaltic	Hbl bas	%	Soldatov, A V
17	Tremolite/Actinolite	Tr/Act	%	Soldatov, A V
18	Anthophyllite	Ath	%	Soldatov, A V
19	Zircon	Zrn	%	Soldatov, A V
20	Spinel	Spl	%	Soldatov, A V
21	Apatite	Ap	%	Soldatov, A V
22	Garnet	Grt	%	Soldatov, A V
23	Mica	Mica	%	Soldatov, A V
24	Volcanic glass, heavy	Volc glass h	%	Soldatov, A V
25	Black ore	Black ore	%	Soldatov, A V	magnetic
26	Black ore	Black ore	%	Soldatov, A V	non-magnetic
27	Red ore	Red ore	%	Soldatov, A V
28	Leucoxene	Leucox	%	Soldatov, A V
29	Fish teeh and bones	Ftb	%	Soldatov, A V
30	Nonidentified, altered, heavy	Nonident alt heavy	%	Soldatov, A V
31	Heavy minerals, sum	HM sum	%	Soldatov, A V
32	Light minerals	LM	%	Soldatov, A V
33	Quartz	Qz	%	Soldatov, A V
34	Feldspar	Fsp	%	Soldatov, A V	<1.543
35	Feldspar	Fsp	%	Soldatov, A V	>1.543
36	Serpentine-chlorite	Srp-chl	%	Soldatov, A V
37	Nonidentified, altered, light	Nonident alt light	%	Soldatov, A V
38	Volcanic glass, light	Volc glass l	%	Soldatov, A V
39	Carbonate, authigenic	Carb auth	%	Soldatov, A V
40	Carbonate, biogenic	Carb biog	%	Soldatov, A V
41	Opal, biogenic silica	bSiO2	%	Soldatov, A V
42	Light minerals	LM	%	Soldatov, A V	other
43	Light minerals, sum	LM sum	%	Soldatov, A V

License:

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

Size:

440 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Depth sed [m]	6 Depth top [m]	7 Depth bot [m]	8 Size fraction	9 HM [%]	10 Aug-Di [%]	11 En-bro [%]	12 Hyp [%]	13 Ol [%]	14 Ep-Zo [%]	15 Hbl [%]	16 Hbl bas [%]	17 Tr/Act [%]	18 Ath [%]	19 Zrn [%]	20 Spl [%]	21 Ap [%]	22 Grt [%]	23 Mica [%]	24 Volc glass h [%]	25 Black ore [%] (magnetic)	26 Black ore [%] (non-magnetic)	27 Red ore [%]	28 Leucox [%]	29 Ftb [%]	31 HM sum [%]	32 LM [%]	34 Fsp [%] (<1.543)	35 Fsp [%] (>1.543)	36 Srp-chl [%]	37 Nonident alt light [%]	38 Volc glass l [%]	39 Carb auth [%]	40 Carb biog [%]	41 bSiO2 [%]	42 LM [%] (other)	43 LM sum [%]
AK1-5GR	0.0670	-18.7170	-4070	0.050	0	0.10	0.1-0.05 mm	<1.0	23.8	0.0	0.0	0.0	9.5	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	9.5	28.6	0.0	14.3	14.3	0.0	0.0	100.0	>99.0	0.0	0.0	0.0	0.0	0.0	0.0	88.9	11.0	0.1	100.0
AK1-7DRG	-0.2670	-18.3330	-7200	0.250	0	0.50	0.1-0.05 mm	11.3	24.1	30.2	1.5	16.4	4.3	2.2	0.3	2.8	0.0	0.3	0.0	0.0	0.0	3.4	0.0	1.8	8.6	3.1	0.3	0.3	99.6	88.7	0.8	3.3	33.8	47.8	0.0	0.0	0.0	14.2	0.1	100.0
AK1-7GC	-0.2670	-18.3330	-7200	1.580			0.2-0.1 mm	8.1	22.9	47.8	0.0	4.7	0.4	7.5	3.2	0.0	0.0	0.0	0.0	0.0	0.0	0.4	0.0	0.0	10.7	1.6	0.8	0.0	100.0	91.9	0.0	4.3	9.8	85.9	0.0	0.0	0.0	0.0	0.0	100.0
AK1-7GC	-0.2670	-18.3330	-7200	1.580			0.1-0.05 mm	0.6	19.0	50.2	0.0	0.0	0.6	4.3	2.1	1.5	0.0	0.0	5.2	0.3	0.0	0.9	0.0	2.1	11.9	0.3	0.6	0.0	99.0	99.4	0.0	2.6	6.7	68.4	0.0	21.1	0.0	0.0	2.2	101.0
AK1-7GC	-0.2670	-18.3330	-7200	1.600			0.2-0.1 mm	32.2	0.0	12.2	0.0	80.4	0.0	0.0	0.0	0.0	0.0	0.0	3.1	0.0	0.0	0.0	0.0	0.0	4.3	0.0	0.0	0.0	100.0	67.8	0.0	2.4	4.2	93.0	0.2	0.0	0.0	0.2	0.0	100.0
AK1-7GC	-0.2670	-18.3330	-7200	1.600			0.1-0.05 mm	11.8	1.7	16.1	0.0	47.2	0.0	0.2	0.0	0.0	0.0	0.0	14.0	0.2	0.0	0.0	0.0	8.6	11.9	0.0	0.0	0.0	99.9	88.2	0.0	0.8	3.1	94.0	0.6	0.0	0.0	0.0	1.5	100.0
AK1-7GC	-0.2670	-18.3330	-7200	1.630			0.2-0.1 mm	16.7	24.7	35.1	0.0	10.8	0.0	6.5	1.7	0.0	0.0	0.9	0.0	0.9	0.0	0.0	0.0	0.0	17.7	0.9	0.9	0.0	100.1	83.3	0.0	10.7	5.2	63.7	0.0	0.0	0.0	0.0	20.4	100.0
AK1-7GC	-0.2670	-18.3330	-7200	1.630			0.1-0.05 mm	16.3	18.5	26.8	0.0	6.0	0.3	17.2	4.8	3.9	4.5	0.0	1.6	0.3	0.0	0.9	0.0	1.9	10.8	1.3	1.3	0.0	100.1	83.7	0.0	9.2	7.3	81.4	0.0	0.3	0.0	0.9	0.9	100.0
AK1-7GC	-0.2670	-18.3330	-7200	1.650			0.2-0.1 mm	13.2	25.6	21.3	0.0	29.3	0.0	2.2	1.9	0.0	0.0	0.3	0.3	0.0	0.0	0.0	0.0	0.0	19.1	0.0	0.0	0.0	100.0	86.8	0.0	7.3	2.4	90.3	0.0	0.0	0.0	0.0	0.0	100.0
AK1-7GC	-0.2670	-18.3330	-7200	1.650			0.1-0.05 mm	5.5	9.0	54.9	0.0	6.4	0.0	3.9	3.1	1.7	0.9	0.3	3.9	0.0	0.0	0.3	0.0	0.8	10.6	4.2	0.0	0.0	100.0	94.5	0.0	9.6	13.0	77.3	0.0	0.0	0.0	0.0	0.0	99.9
AK1-08	-0.2667	-18.3333	-7200	0.005	0	0.01	0.1-0.05 mm	12.9	21.3	39.7	1.3	13.7	2.7	3.7	1.0	2.3	0.0	0.3	0.0	0.0	0.3	1.0	0.0	3.7	6.3	2.7	0.0	0.0	100.0	87.1	0.0	4.1	35.7	43.4	0.0	0.0	0.0	16.7	0.0	99.9
AK1-10GC	-0.1830	-18.5670	-7400	0.040	0	0.08	0.4-0.05 mm	6.0	29.1	28.0	2.9	6.8	3.0	3.6	2.9	2.2	0.0	0.0	1.4	0.0	0.0	2.5	0.0	4.3	9.4	1.8	0.4	0.4	98.7	94.0	0.0	1.8	19.9	47.8	0.0	0.9	17.8	11.3	0.6	100.1