Lebreiro, Susana Martin; Antón López, Laura; Reguera, Maria Isabel (2024): Sortable silt of sediment core MVSEIS08_TG-2 from Gulf of Cadiz [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.966838, In: Lebreiro, SM et al. (2024): Analysis of a sediment core MVSEIS08_TG-2 taken during the MVSEIS2008 expedition in Gulf of Cadiz [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.966606
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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):
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: MVSEIS2008 * Basis: Hespérides * 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