Šupraha, Luka; Henderiks, Jorijntje (2020): Morphometry of Helicosphaera spp. coccoliths at DSDP Site 74-525 during the past 15 million years [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.915590, In: Šupraha, L; Henderiks, J (2020): Helicosphaera spp. coccolith morphometry and nannofossil fluxes at DSDP Site 74-525 and ODP Site 115-707 during the past 15 Ma [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.915595
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Abstract:
This dataset contains raw coccolith size data and calculated parameters (Coccolith volume index and Aspect ratio) of the genus Helicosphaera at DSDP Site 525 during the past 15 million years. Data was collected using the optical method described in Beaufort et al., 2014 (doi:10.1038/nprot.2014.028). Each measured coccolith is identified to the morphospecies-level.
Related to:
Šupraha, Luka; Henderiks, Jorijntje (in review): A 15 million-year long record of phenotypic evolution in the heavily calcified coccolithophore Helicosphaera and its biogeochemical implications. Biogeosciences
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: -29.070700 * Longitude: 2.985300
Date/Time Start: 1980-06-10T00:00:00 * Date/Time End: 1980-06-10T00:00:00
Minimum Elevation: -2467.0 m * Maximum Elevation: -2467.0 m
Event(s):
74-525 * Latitude: -29.070700 * Longitude: 2.985300 * Date/Time: 1980-06-10T00:00:00 * Elevation: -2467.0 m * Penetration: 3.6 m * Recovery: 3.6 m * Location: South Atlantic/CREST * Campaign: Leg74 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 3.6 m cored; 0 m drilled; 99.7 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample ID | Sample ID | Šupraha, Luka | Image_label | ||
| 2 | Species | Species | Šupraha, Luka | |||
| 3 | AGE | Age | ka BP | Šupraha, Luka | Geocode | |
| 4 | Coccoliths, area | Cocco area | µm2 | Šupraha, Luka | ||
| 5 | Natural logarithm | ln | Šupraha, Luka | ln of coccolith area [µm**2] | ||
| 6 | Coccoliths, grey level | Cocco grey level | Šupraha, Luka | |||
| 7 | Coccoliths, thickness | Cocco thick | µm | Šupraha, Luka | ||
| 8 | Natural logarithm | ln | Šupraha, Luka | ln of coccolith thickness [µm] | ||
| 9 | Coccoliths, diameter | Coccol diam | µm | Šupraha, Luka | ||
| 10 | Natural logarithm | ln | Šupraha, Luka | ln of major coccolith diameter (of a fitted ellipse) | ||
| 11 | Coccoliths, diameter | Coccol diam | µm | Šupraha, Luka | ||
| 12 | Natural logarithm | ln | Šupraha, Luka | ln of minor coccolith diameter (of a fitted ellipse) | ||
| 13 | Coccoliths, volume | Cocco vol | µm3 | Šupraha, Luka | ||
| 14 | Natural logarithm | ln | Šupraha, Luka | ln of coccolith volume index [µm**3] | ||
| 15 | Coccoliths, aspect ratio | Cocco aspect r | Šupraha, Luka | |||
| 16 | Natural logarithm | ln | Šupraha, Luka | ln of coccolith aspect ratio |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
29505 data points
Download Data
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