Lebreiro, Susana Martin; Antón López, Laura; Reguera, Maria Isabel (2024): Sortable silt of sediment cores GC-01A from Gulf of Cadiz [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.966839, In: Lebreiro, SM et al. (2024): Analysis of sediment cores GC-01A taken during the CONTOURIBER-1 expedition in Gulf of Cadiz [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.967183
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Abstract:
For sortable-silt 83 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):
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: 36.710430 * Longitude: -7.745290
Minimum DEPTH, sediment/rock: 0.010 m * Maximum DEPTH, sediment/rock: 5.191 m
Event(s):
GC-01A-PC * Latitude: 36.710430 * Longitude: -7.745290 * Elevation: -566.0 m * Recovery: 5.21 m * Campaign: CONTOURIBER-1 * Basis: Sarmiento de Gamboa * Method/Device: Gravity corer (GC) * Comment: site equivalent to IODP site U1386
GC-01A-TC * Latitude: 36.710430 * Longitude: -7.745290 * Elevation: -566.0 m * Recovery: 0.90 m * Campaign: CONTOURIBER-1 * Basis: Sarmiento de Gamboa * Method/Device: Trigger corer (TC) * Comment: site equivalent to IODP site U1386
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Event label | Event | Lebreiro, Susana Martin | |||
2 | Section | Sect | Lebreiro, Susana Martin | |||
3 | DEPTH, sediment/rock | Depth sed | m | Lebreiro, Susana Martin | Geocode – Depth in core | |
4 | Depth, relative | Depth rel | m | Lebreiro, Susana Martin | Depth in section | |
5 | Depth, top/min | Depth top | m | Lebreiro, Susana Martin | Depth in section | |
6 | Depth, bottom/max | Depth bot | m | Lebreiro, Susana Martin | Depth in section | |
7 | AGE | Age | ka BP | Lebreiro, Susana Martin | Geocode | |
8 | 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) |
9 | 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) |
10 | 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) |
11 | 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 |
12 | 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 |
13 | 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:
591 data points