Citation:

PANGAEA.966606

Name: Sortable silt of sediment core MVSEIS08_TG-2 from Gulf of Cadiz
Published: 2024-06-05
License: https://creativecommons.org/licenses/by/4.0/
Keywords: contourites; Gulf of Cadiz; Heinrich Event 1; Mediterranean outflow; MOW; sortable silt; SST (foraminifera); stable oxygen and carbon isotopes; Younger Dryas

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Abstract:

For sortable-silt 44 samples were analysed in the fraction <63 micron. In these, organic matter was eliminated with 33% of hydrogen peroxide (H2O2) and carbonates removed with 0.2N hydrogen chloride (HCl). Then, samples were dispersed with 0.5% Na-hexametaphosphate (Calgon) and ultra-sonicated for 2 minutes. Prior to grain-size analysis in a Sedigraph Micromeritics III Plus, samples were homogenised by stirring in a magnetic plate for 30 minutes. The grain-size distribution was acquired in the interval 10-63 micron, assumed to have non-cohesive behaviour during transport and deposition (McCave et al., 1995), at the IGME. The sortable silt mean of the carbonate-free 10-63 micron interval is designated as SS (McCave et al., 1995). The percentage of sortable silt (SS%), i.e. % (10-63 micron)/<63 micron, is also a key parameter obtained from Sedigraph analyses. Dry-density required for the grain size distribution calculation was measured by using a pycnometer Micromeritics Accupy 1330.

Keyword(s):

contourites; Gulf of Cadiz; Heinrich Event 1; Mediterranean outflow; MOW; sortable silt; SST (foraminifera); stable oxygen and carbon isotopes; Younger Dryas

Related to:

Lebreiro, Susana Martin; Antón López, Laura; Reguera, Maria Isabel; Marzocchi, Alice (2018): Paleoceanographic and climatic implications of a new Mediterranean Outflow branch in the southern Gulf of Cadiz. Quaternary Science Reviews, 197, 92-111, https://doi.org/10.1016/j.quascirev.2018.07.036

References:

McCave, I Nick; Manighetti, Barbara; Robinson, Simon G (1995): Sortable silt and fine sediment size/ composition slicing: parameters for palaeocurrent speed and palaeoceanography. Paleoceanography, 10, 593-610, https://doi.org/10.1029/94PA03039

Coverage:

Latitude: 34.971330 * Longitude: -6.841170

Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 2.125 m

Event(s):

MVSEIS08_TG-2 * Latitude: 34.971330 * Longitude: -6.841170 * Elevation: -530.0 m * Recovery: 2.12 m * Campaign: * Basis: * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Lebreiro, Susana Martin		Geocode – Depth in core
2	AGE	Age	ka BP	Lebreiro, Susana Martin		Geocode
3	Size fraction 0.016-0.010 mm	16-10 µm	%	Lebreiro, Susana Martin	Micromeritics Sedigraph III 5120 X-ray absorption sedimentation analyzer	fines (medium silt)
4	Size fraction 0.031-0.016 mm	31-16 µm	%	Lebreiro, Susana Martin	Micromeritics Sedigraph III 5120 X-ray absorption sedimentation analyzer	fines (coarse silt)
5	Size fraction 0.063-0.031 mm	63-31 µm	%	Lebreiro, Susana Martin	Micromeritics Sedigraph III 5120 X-ray absorption sedimentation analyzer	fines (very coarse silt)
6	Size fraction 0.063-0.010 mm, sortable silt	63-10 µm sort silt	%	Lebreiro, Susana Martin	Micromeritics Sedigraph III 5120 X-ray absorption sedimentation analyzer	pelagics
7	Size fraction 0.063-0.010 mm, sortable silt	63-10 µm sort silt	%	Lebreiro, Susana Martin	Micromeritics Sedigraph III 5120 X-ray absorption sedimentation analyzer	contourites
8	Size fraction 0.063-0.010 mm, sortable silt	63-10 µm sort silt	%	Lebreiro, Susana Martin	Micromeritics Sedigraph III 5120 X-ray absorption sedimentation analyzer	mean, carb-free

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

220 data points

Data

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

1 Depth sed [m] (Depth in core)	2 Age [ka BP]	3 16-10 µm [%] (fines (medium silt))	4 31-16 µm [%] (fines (coarse silt))	5 63-31 µm [%] (fines (very coarse silt))	6 63-10 µm sort silt [%] (pelagics)	7 63-10 µm sort silt [%] (contourites)	8 63-10 µm sort silt [%] (mean, carb-free)
0.000	2.577	4.033	3.767	1.867	9.43		14.310
0.010	2.704	4.967	4.333	2.567	12.13		15.887
0.050	3.212	9.250	11.725	5.225	25.70		18.280
0.080	3.593	5.250	5.200	2.550	12.75		15.710
0.130	4.227	18.720	14.060	4.660	37.04		18.456
0.160	4.608	8.450	11.900	6.100	25.50		18.935
0.240	5.623	8.033	10.367	5.967	24.63		18.607
0.280	6.131	7.800	9.833	5.400		23.27	16.987
0.290	6.258	7.933	13.833	7.033		29.10	19.793
0.320	6.638	9.433	12.050	4.750		25.92	18.013
0.400	7.653	8.233	10.300	4.917	23.45		16.910
0.480	8.669	9.533	13.467	5.933	28.57		18.700
0.490	8.796	15.033	12.467	6.167	33.50		15.790
0.560	9.684	13.300	12.483	4.267	31.57		15.512
0.640	10.702	17.483	13.433	2.517	32.50		11.955
0.680	11.115	9.567	17.467	10.167		36.87	21.253
0.705	11.373	10.167	16.233	8.867		35.47	20.223
0.715	11.476	9.467	12.900	6.400		28.73	18.957
0.755	11.755	9.933	14.317	7.317	30.43		19.482
0.775	11.776	10.800	11.967	3.617	26.87		15.147
0.795	11.810	9.600	14.800	8.917		32.08	20.493
0.835	11.866	10.133	14.967	7.467		32.17	19.703
0.875	11.922	17.233	14.967	3.767		36.30	12.563
0.915	11.977	11.533	13.200	1.767	26.27		10.943
0.955	12.033	13.667	13.367	0.633	28.40		11.213
1.035	12.144	21.333	14.517	2.383	39.17		12.335
1.045	12.170	9.933	15.900	9.267	34.43		20.712
1.115	12.241	16.917	14.333	2.767	34.77		12.327
1.195	12.366	10.267	13.633	6.900	30.60		18.667
1.275	12.477	11.183	15.233	9.350	35.73		20.157
1.345	12.589	9.633	13.733	8.567	31.93		20.005
1.355	12.602	8.467	14.467	9.383	31.98		20.928
1.515	12.811	15.300	13.733	1.900	30.38		12.008
1.555	12.871	16.650	16.083	7.783		41.47	14.500
1.635	13.057	34.400	22.417	7.850		81.77	16.043
1.645	13.057	18.633	22.167	7.067		48.03	14.987
1.715	13.366	13.067	26.800	14.433		53.80	22.423
1.795	13.428	11.433	27.733	15.933		54.33	23.520
1.875	13.613	52.733	21.367	0.733		74.07	15.877
1.885	13.613	11.933	23.700	8.233		43.53	20.133
1.955	13.799	12.233	24.700	10.267		47.07	21.103
2.035	13.984	18.733	11.300	0.133	29.67		11.373
2.115	14.300	25.167	12.967	-0.600	38.33		11.957
2.125	14.300	11.367	16.167	3.933	31.40		17.523