Kristjánsdóttir, Greta B; McCave, I Nick; Bryant, C (2011): AMS C-14 ages of coretops collected on RRS Charles Darwin cruise CD159, July 2004, N. Atlantic, for the NERC RAPID programme [dataset]. Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences, University of Cambridge, PANGAEA, https://doi.org/10.1594/PANGAEA.773254
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Abstract:
Material and data were collected at 41 sites in the subpolar North Atlantic Ocean between Scotland and Newfoundland, during the RRS CharlesDarwin CD159 cruise in July 2004 (McCave, 2005). Sites were selected to reflect the major inputs of water that becomes the North Atlantic Deep Water (NADW); the Iceland-Scotland Overflow Water (ISOW), the Denmark Strait Overflow Water (DSOW) and the Labrador Sea Water (LSW). Areas cored were the south Iceland Rise, SE Greenland slope/rise and Eirik Drift, and the Labrador margin. A total of 29 box cores, 19 piston cores, 6 kasten cores, 9 short gravity cores and 20 CTD casts as well as 28 surface water samples were collected during the cruise. Here we present sediment core-top sample ages. The cores were sampled at 1 or 0.5 cm intervals and we used the top 1 or 2 cm, depending on availability of foraminifera in the samples. Sediment samples were disaggregated on an end-over-end wheel, wet sieved at >63 um, and dry sieved to 63-150 and >150 um. Accelerator Mass Spectrometer (AMS) radiocarbon dating was done for each core top based on between 900-1600 monospecific planktonic foraminifera (Globigerina bulloides or Neogloboquadrina pachyderma (sinistral)). All dates were of modern or late Holocene age except site RAPID-08-5B (9806 ± 38 uncorrected 14C years BP) and site RAPID-14-10B (11543 ± 40 uncorrected 14C years BP). The >150 um fraction was split until approximately 300 foraminifera remained and counted for number of lithic grains, benthic foraminifera, planktonic foraminifera and foraminifera fragments. In all but the shallowest sample (Greenland rise, 761m water depth) benthic foraminifera constituted less than 2% of the total >150 um fraction of the sample.
Related to:
McCave, I Nick (2005): Cruise Report, RRS Charles Darwin Cruise 159, 1st-30th July 2004, Fairlie, Scotland to St. John's, Newfoundland. For the RAPID Climate Change Research Programme of NERC under grant NER/T/S/2002/00436. Dept. of Earth Sciences, Cambridge, U.K., 47 pp, https://www.bodc.ac.uk/resources/inventories/cruise_inventory/report/6755/
Coverage:
Median Latitude: 59.137486 * Median Longitude: -32.509100 * South-bound Latitude: 50.710833 * West-bound Longitude: -52.952000 * North-bound Latitude: 63.139833 * East-bound Longitude: -12.162167
Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 0.0100 m
Event(s):
RAPiD-01-1B * Latitude: 57.485833 * Longitude: -12.237167 * Elevation: -1805.0 m * Location: Eastern North Atlantic * Campaign: CD159 * Basis: Charles Darwin * Method/Device: Box corer (BC)
RAPiD-03-1C * Latitude: 59.962667 * Longitude: -12.162167 * Elevation: -1206.0 m * Location: Eastern North Atlantic * Campaign: CD159 * Basis: Charles Darwin * Method/Device: CTD with gravity corer (CTD-GC)
RAPiD-04-2C * Latitude: 61.743333 * Longitude: -15.405167 * Elevation: -2284.0 m * Location: South of Iceland * Campaign: CD159 * Basis: Charles Darwin * Method/Device: CTD with gravity corer (CTD-GC)
Comment:
1. 14C results have been normalised to d13C [per mil PDB] -25 using the d13C values
2. Estimated d13C value - insufficient sample material for an independent d13C measurement
3. Absolute % Modern involves a mathematical adjustment to account for ongoing radioactive decay of the international reference standard (oxalic acid) since AD 1950. (Stuiver and Polach, Radiocarbon vol.19 No.3, pp.355-363). This method of reporting may be used for modelling 14C and/or for 14C results which are greater than 100% modern 14C.
4. Sample RAPiD-27-15B, SUERC-16529, 0-1cm contained 300 µg C and was too small for routine analysis. The sample was prepared to graphite using a dedicated vacuum line" for small samples and analysed on the 5MVAMS at low current. The 13C/12C ratio for this sample was measured on the SUERC AMS during 14C determination and used to model the d13C value by comparison to the Craig (1957) 13C/12C value for PDB. This value is shown in brackets and was considered the most appropriate to normalise 14C data to d13C [per mil VPDB] = -25, but is not necessarily representative of the d13C in the original sample material. The sample was too small for acid etching (usually carried out for shells to remove the outer shell surface) prior to hydrolysis to CO2.
5. Samples RAPiD-08-5B and RAPiD-14-10B: These two old ages come from sites under the core of the deep western Boundary current south of Iceland and have a winnowed surface: 5B was only a surface scrape from a hard bottom, and 10B was 'gravelly' in part.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Method/Device of event | Method/Device | ||||
| 3 | Sample comment | Sample comment | McCave, I Nick | |||
| 4 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 5 | Depth, top/min | Depth top | m | McCave, I Nick | ||
| 6 | Depth, bottom/max | Depth bot | m | McCave, I Nick | ||
| 7 | Size fraction | Size fraction | McCave, I Nick | |||
| 8 | Location of event | Location | ||||
| 9 | Latitude of event | Latitude | ||||
| 10 | Longitude of event | Longitude | ||||
| 11 | Elevation of event | Elevation | m | |||
| 12 | Age, dated material | Dated material | McCave, I Nick | |||
| 13 | Environment | Environment | McCave, I Nick | |||
| 14 | Sample code/label | Sample label | McCave, I Nick | Scottish Universities Environmental Research Centre number | ||
| 15 | Enrichment | Enrichm | % | McCave, I Nick | of 14C in % of modern | |
| 16 | Standard deviation | Std dev | ± | McCave, I Nick | 1 sigma | |
| 17 | Absolute | Abs | % | McCave, I Nick | of modern | |
| 18 | Standard deviation | Std dev | ± | McCave, I Nick | 1 sigma | |
| 19 | Age, dated | Age dated | ka | McCave, I Nick | Age, 14C AMS | |
| 20 | Age, dated standard deviation | Age dated std dev | ± | McCave, I Nick | 1 sigma | |
| 21 | δ13C | δ13C | ‰ PDB | McCave, I Nick | ||
| 22 | Method comment | Method comm | McCave, I Nick | Estimated d13C value - insufficient sample material for an independent d13C measurement |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
501 data points
Data
| 1 Event | 2 Method/Device | 3 Sample comment | 4 Depth sed [m] | 5 Depth top [m] | 6 Depth bot [m] | 7 Size fraction | 8 Location | 9 Latitude | 10 Longitude | 11 Elevation [m] | 12 Dated material | 13 Environment | 14 Sample label (Scottish Universities Environ...) | 15 Enrichm [%] (of 14C in % of modern) | 16 Std dev [±] (1 sigma) | 17 Abs [%] (of modern) | 18 Std dev [±] (1 sigma) | 19 Age dated [ka] | 20 Age dated std dev [±] (1 sigma) | 21 δ13C [‰ PDB] | 22 Method comm (Estimated d13C value - insuff...) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RAPiD-01-1B | Box corer | 0.0050 | 0.000 | 0.010 | >300 µm | Eastern North Atlantic | 57.4858 | -12.2372 | -1805 | CaCO3 (Approx. 14mg G. bulloides) 1150 forams | Euphotic zone (planktonic foraminifera) | SUERC-16392 | 84.46 | 0.37 | 83.91 | 0.37 | 1.357 | 0.035 | -0.2 | ||
| RAPiD-03-1C | CTD with gravity corer | 0.0050 | 0.000 | 0.010 | >300 µm | Eastern North Atlantic | 59.9627 | -12.1622 | -1206 | CaCO3 (Approx. 17mg G. bulloides) 1215 forams | Euphotic zone (planktonic foraminifera) | SUERC-16393 | 76.67 | 0.34 | 76.17 | 0.34 | 2.134 | 0.035 | -0.1 | ||
| RAPiD-04-2C | CTD with gravity corer | surface washing | 0.0000 | >315 µm | South of Iceland | 61.7433 | -15.4052 | -2284 | CaCO3 (Approx. 15mg G. bulloides) 1032 forams | Euphotic zone (planktonic foraminifera) | SUERC-16394 | 91.66 | 0.42 | 91.07 | 0.42 | 0.699 | 0.037 | -0.2 | |||
| RAPiD-04-2C | CTD with gravity corer | surface washing | 0.0000 | South of Iceland | 61.7433 | -15.4052 | -2284 | CaCO3 (Approx. 6mg) One half of Arca sp. | Benthic bivalve | SUERC-16435 | 94.23 | 0.44 | 93.62 | 0.44 | 0.477 | 0.037 | 0.0 | estimated | |||
| RAPiD-05-2B | Box corer | 0.0050 | 0.000 | 0.010 | >355 µm | South of Iceland | 61.8330 | -15.6285 | -2278 | CaCO3 (Approx. 15mg G. bulloides) 950 forams | Euphotic zone (planktonic foraminifera) | SUERC-16395 | 90.15 | 0.42 | 89.56 | 0.42 | 0.833 | 0.037 | -0.1 | ||
| RAPiD-06-3B | Box corer | 0.0050 | 0.000 | 0.010 | >300 µm | South of Iceland | 62.0633 | -16.0557 | -2228 | CaCO3 (Approx. 15mg G. bulloides) 1164 forams | Euphotic zone (planktonic foraminifera) | SUERC-16396 | 91.57 | 0.40 | 90.98 | 0.40 | 0.707 | 0.035 | -0.1 | ||
| RAPiD-07-4B | Box corer | 0.0050 | 0.000 | 0.010 | >300 µm | South of Iceland | 62.4393 | -16.4663 | -2050 | CaCO3 (Approx. 15mg G. bulloides) 1250 forams | Euphotic zone (planktonic foraminifera) | SUERC-16397 | 93.11 | 0.41 | 92.50 | 0.41 | 0.574 | 0.035 | -0.4 | ||
| RAPiD-07-4B | Box corer | 0.0050 | 0.000 | 0.010 | South of Iceland | 62.4393 | -16.4663 | -2050 | CaCO3 (Approx. 109mg) One half of an articulated Cuspidaria sp. | Benthic bivalve | SUERC-16436 | 99.75 | 0.46 | 99.10 | 0.46 | 0.000 | -6.2 | ||||
| RAPiD-08-5B | Box corer | 0.0100 | 0.000 | 0.020 | >212 µm | South of Iceland | 62.9683 | -17.0733 | -1421 | CaCO3 (Approx. 11mg N. pachyderma (sin)) 1404 forams | Euphotic zone (planktonic foraminifera) | SUERC-16400 | 29.50 | 0.14 | 29.31 | 0.14 | 9.806 | 0.038 | -0.1 | ||
| RAPiD-09-1G | Gravity corer | 0.0050 | 0.000 | 0.010 | >150 µm | South of Iceland | 63.1398 | -17.2943 | CaCO3 (Approx. 5mg G. bulloides) 747 forams | Euphotic zone (planktonic foraminifera) | SUERC-16401 | 93.82 | 0.43 | 93.21 | 0.43 | 0.512 | 0.037 | 0.0 | estimated | ||
| RAPiD-10-6B | Box corer | 0.0100 | 0.000 | 0.020 | >150 µm | South of Iceland | 62.9732 | -17.5958 | -1249 | CaCO3 (Approx. 5mg G. bulloides) 718 forams | Euphotic zone (planktonic foraminifera) | SUERC-16402 | 102.06 | 0.47 | 101.39 | 0.47 | 0.000 | 0.0 | estimated | ||
| RAPiD-11-7B | Box corer | 0.0025 | 0.000 | 0.005 | >212 µm | South of Iceland | 62.2982 | -17.1510 | -2126 | CaCO3 (Approx. 13mg G. bulloides) 1609 forams | Euphotic zone (planktonic foraminifera) | SUERC-16404 | 95.20 | 0.44 | 94.58 | 0.44 | 0.395 | 0.037 | -0.5 | ||
| RAPiD-12-8B | Box corer | surface scrape | 0.0000 | 300-500 µm | South of Iceland | 62.0933 | -17.8162 | -1944 | CaCO3 (Approx. 13.5mg G. bulloides 1086 forams | Euphotic zone (planktonic foraminifera) | SUERC-17696 | 91.21 | 0.41 | 0.739 | 0.036 | -0.4 | |||||
| RAPiD-13-9B | Box corer | 0.0025 | 0.000 | 0.005 | >250 µm | South of Iceland | 62.2118 | -17.9895 | -1755 | CaCO3 (Approx. 19mg G. bulloides) 1395 forams | Euphotic zone (planktonic foraminifera) | SUERC-16405 | 90.62 | 0.39 | 90.03 | 0.39 | 0.791 | 0.035 | -0.6 | ||
| RAPiD-13-9B | Box corer | 0.0025 | 0.000 | 0.005 | >315 µm | South of Iceland | 62.2118 | -17.9895 | -1755 | CaCO3 (Approx. 25mg G. bulloides) 1226 forams | Euphotic zone (planktonic foraminifera) | SUERC-16406 | 86.70 | 0.40 | 86.14 | 0.40 | 1.146 | 0.037 | 0.0 | estimated | |
| RAPiD-14-10B | Box corer | 0.0025 | 0.000 | 0.005 | 212-250 µm | South off Iceland | 62.4530 | -18.0840 | -1488 | CaCO3 (Approx. 19mg N. pachyderma (sin)) 1735 forams (weight after vortex cleaning 18.965 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16417 | 23.77 | 0.12 | 23.61 | 0.12 | 11.543 | 0.040 | |||
| RAPiD-16-2G | Gravity corer | 0.0000 | South off Iceland | 62.4530 | -18.0840 | -2129 | insufficient material | ||||||||||||||
| RAPiD-18-3C | CTD with gravity corer | 0.0050 | 0.000 | 0.010 | >212 µm | South of Iceland | 60.9877 | -19.9887 | -2407 | CaCO3 (Approx. 8mg G. bulloides) 1067 forams | Euphotic zone (planktonic foraminifera) | SUERC-16407 | 95.36 | 0.44 | 94.74 | 0.44 | 0.382 | 0.037 | -0.3 | ||
| RAPiD-19-4C | CTD with gravity corer | 0.0100 | 0.000 | 0.020 | >150 µm | Gardar Drift | 57.1992 | -27.8495 | -2780 | CaCO3 (Approx. 8mg G. bulloides) 943 forams | Euphotic zone (planktonic foraminifera) | SUERC-16410 | 94.69 | 0.42 | 94.08 | 0.42 | 0.438 | 0.035 | -0.4 | ||
| RAPiD-21-12B | Box corer | 0.0050 | 0.000 | 0.010 | >212 µm | Gardar Drift | 57.4515 | -27.9088 | -2630 | CaCO3 (Approx. 7mg G. bulloides) 908 forams | Euphotic zone (planktonic foraminifera) | SUERC-16411 | 99.24 | 0.44 | 98.60 | 0.44 | 0.000 | -0.4 | |||
| RAPiD-22-3G | Gravity corer | 0.0050 | 0.000 | 0.010 | >300 µm | Eastern Irminger Sea | 59.0010 | -32.7980 | -2099 | CaCO3 (Approx. 16mg G. bulloides) 1154 forams | Euphotic zone (planktonic foraminifera) | SUERC-16412 | 85.84 | 0.40 | 85.28 | 0.40 | 1.226 | 0.037 | -0.3 | ||
| RAPiD-24-13B | Box corer | 0.0100 | 0.000 | 0.020 | >250 µm | Denmark Strait | 60.1727 | -39.1248 | -2748 | CaCO3 (Approx. 8mg G. bulloides) 720 forams | Euphotic zone (planktonic foraminifera) | ||||||||||
| RAPiD-24-13B | Box corer | surface scrape | 0.0000 | >300 µm | Denmark Strait | 60.1727 | -39.1248 | -2748 | CaCO3 (Approx. 21mg G. bulloides) 1220 forams (weight after vortex cleaning 20.524 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16420 | 74.87 | 0.35 | 74.38 | 0.35 | 2.325 | 0.037 | -0.2 | |||
| RAPiD-26-14B | Box corer | 0.0000 | Denmark Strait | 60.1727 | -39.1248 | -2302 | insufficient material | ||||||||||||||
| RAPiD-27-15B | Box corer | 0.0050 | 0.000 | 0.010 | >212 µm | East Greenland rise | 59.6030 | -42.7123 | -768 | CaCO3 (Approx. 6mg G. bulloides) 475 forams | Euphotic zone (planktonic foraminifera) | SUERC-16413 | 93.92 | 0.43 | 93.31 | 0.43 | 0.504 | 0.037 | 0.0 | ||
| RAPiD-27-15B | Box corer | 0.0050 | 0.000 | 0.010 | East Greenland rise | 59.6030 | -42.7123 | -768 | CaCO3 (approx. 4mg) Several very small juvenile bivalves, some are Arca spp. others unidentified | Benthic bivalve | SUERC-16529 | 93.74 | 0.28 | 0.520 | 0.035 | 2.5 | *** | ||||
| RAPiD-28-16B | Box corer | 0.0000 | East Greenland rise | 59.6030 | -42.7123 | -1627 | insufficient material | ||||||||||||||
| RAPiD-29-18B | Box corer | 0.0050 | 0.000 | 0.010 | >212 µm | Eirik Drift | 58.8002 | -44.8637 | -2145 | CaCO3 (Approx. 10mg G. bulloides) 840 forams (weigt after vortex cleaning 9.905 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16421 | 74.87 | 0.35 | 74.38 | 0.35 | 2.325 | 0.037 | -0.4 | ||
| RAPiD-30-20B | Box corer | 0.0075 | 0.005 | 0.010 | >315 µm | Eirik Drift | 58.4340 | -45.7498 | -2439 | CaCO3 (Approx. 13mg G. bulloides) 799 forams (weight after vortex cleaning 11.983 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16422 | 83.43 | 0.36 | 82.89 | 0.36 | 1.455 | 0.035 | -0.2 | ||
| RAPiD-31-21B | Box corer | 0.0025 | 0.000 | 0.005 | 250-300 µm | Eirik Drift | 58.6108 | -46.1902 | -2570 | CaCO3 (Approx. 18mg N. pachyderma (sin)) 1520 forams (weight after vortex cleaning 18.860 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16423 | 68.47 | 0.30 | 68.02 | 0.30 | 3.043 | 0.035 | 0.6 | ||
| RAPiD-32-22B | Box corer | 0.0050 | 0.000 | 0.010 | >250 µm | Eirik Drift | 58.2487 | -47.0123 | -3096 | CaCO3 (Approx. 12mg G. bulloides) 1156 forams (weigth after vortex cleaning 11.528 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16424 | 87.37 | 0.40 | 86.81 | 0.40 | 1.084 | 0.037 | -0.2 | ||
| RAPiD-33-23B | Box corer | 0.0025 | 0.000 | 0.005 | >300 µm | Eirik Drift | 57.9350 | -46.5110 | -3016 | CaCO3 (Approx. 11.5mg G. bulloides) 887 forams (weight after vortex cleaning 10.884 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16425 | 83.73 | 0.39 | 83.19 | 0.39 | 1.426 | 0.037 | -0.3 | ||
| RAPiD-34-24B | Box corer | 0.0025 | 0.000 | 0.005 | >250 µm | Eirik Drift | 57.5857 | -48.5103 | -3496 | CaCO3 (Approx. 12.5mg G. bulloides) 822 forams (weight after vortex cleaning 12.277 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16426 | 89.11 | 0.41 | 88.53 | 0.41 | 0.927 | 0.037 | -0.2 | ||
| RAPiD-35-25B | Box corer | 0.0050 | 0.000 | 0.010 | >212 µm | Eirik Drift | 57.5078 | -48.7233 | -3486 | CaCO3 (Approx. 9mg G. bulloides) 795 forams. Too small no vortex cleaning | Euphotic zone (planktonic foraminifera) | SUERC-16427 | 93.02 | 0.43 | 92.41 | 0.43 | 0.582 | 0.037 | -0.5 | ||
| RAPiD-36-5C | CTD with gravity corer | 0.0050 | 0.000 | 0.010 | >212 µm | Labrador Sea | 56.7527 | -52.4568 | -3520 | CaCO3 (Approx. 9mg G. bulloides) 960 forams | Euphotic zone (planktonic foraminifera) | SUERC-16414 | 84.84 | 0.39 | 84.29 | 0.39 | 1.321 | 0.037 | -0.4 | ||
| RAPiD-37-26B | Box corer | 0.0100 | 0.000 | 0.020 | 150-250 µm | Labrador shelf | 54.5140 | -52.9520 | -1380 | CaCO3 (Approx. 6mg N. pachyderma (sin)) 1019 forams | Euphotic zone (planktonic foraminifera) | SUERC-17697 | 96.34 | 0.45 | 0.300 | 0.038 | -0.4 | estimated | |||
| RAPiD-37-26B | Box corer | 0.0075 | 0.005 | 0.010 | Labrador shelf | 54.5140 | -52.9520 | -1380 | CaCO3 (Approx. 9mg) Unidentified gastropod fragments | Benthic mollusc | SUERC-16437 | 100.67 | 0.46 | 100.02 | 0.46 | 0.000 | 0.0 | estimated | |||
| RAPiD-38-27B | Box corer | 0.0075 | 0.005 | 0.010 | >212 µm | Hamilton Spur Margin | 54.5328 | -52.4323 | -2152 | CaCO3 (Approx. 15mg N. pachyderma (sin)) 1783 forams. (weight after vortex cleaning 14.940 mg) | Euphotic zone (planktonic foraminifera) | SUERC-16430 | 95.99 | 0.44 | 95.37 | 0.44 | 0.328 | 0.037 | 0.6 | ||
| RAPiD-39-28B | Box corer | 0.0075 | 0.005 | 0.010 | >150 µm | Hamilton Spur Margin | 54.9127 | -51.4815 | -2863 | CaCO3 (Approx. 6mg N. pachyderma (sin)) 1087 forams. Too small no vortex cleaning | Euphotic zone (planktonic foraminifera) | SUERC-16431 | 92.46 | 0.41 | 91.86 | 0.41 | 0.629 | 0.035 | 0.3 | ||
| RAPiD-40-29B | Box corer | 0.0100 | 0.000 | 0.020 | >150 µm | Orphan Spur | 50.9580 | -49.9590 | -1044 | CaCO3 (Approx. 6mg N. pachyderma (sin)) 1356 forams. Too small no vortex cleaning | Euphotic zone (planktonic foraminifera) | SUERC-16432 | 94.71 | 0.44 | 94.10 | 0.44 | 0.436 | 0.037 | 0.0 | estimated | |
| RAPiD-40-29B | Box corer | B, surface scrape | 0.0000 | Orphan Spur | 50.9580 | -49.9590 | -1044 | CaCO3 (Approx. 52mg) Unidentified gastropod fragments | Benthic mollusc | SUERC-16440 | 100.55 | 0.44 | 99.90 | 0.44 | 0.000 | 2.8 | |||||
| RAPiD-40-29B | Box corer | 0.0025 | 0.000 | 0.005 | Orphan Spur | 50.9580 | -49.9590 | -1044 | CaCO3 (Approx. 23mg) Unidentified bivalve fragment | Benthic bivalve | SUERC-16441 | 99.60 | 0.46 | 98.95 | 0.46 | 0.000 | -0.1 | ||||
| RAPiD-41-30B | Box corer | 0.0050 | 0.000 | 0.010 | >150 µm | Orphan Spur | 50.7108 | -49.7137 | -1271 | CaCO3 (Approx. 5mg N. pachyderma (sin)) 1402 forams. Too small no vortex cleaning | Euphotic zone (planktonic foraminifera) | SUERC-16433 | 86.90 | 0.40 | 86.33 | 0.40 | 1.128 | 0.037 | 0.0 | estimated |