/* DATA DESCRIPTION: Citation: Ukpabi, Ndubuisi; Seidenkrantz, Marit-Solveig (2026): Coccolith abundance, assemblage structure, and sedimentological properties along core DA12‑11/2‑ST1‑GC01 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996239 (DOI registration in progress), In: Ukpabi, N; Seidenkrantz, M-S (2026): High resolution Holocene coccolithophore assemblages, absolute abundances, and hydrographic index (CHI) calculations from sediment core DA12 11/2 ST1 GC01, Iceland Basin [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.996263 Abstract: This dataset presents a high resolution sequence of coccolithophore assemblages and absolute abundances from 0–419 cm in core DA12 11/2 ST1 GC01, capturing fine scale ecological variability across predominantly dark grey calcareous ooze interspersed with discrete ash layers. Coccolith counts range from extremely low values in ash dominated horizons to >900 specimens in more stable intervals, with absolute abundances varying by over two orders of magnitude. Assemblages are consistently dominated by Coccolithus pelagicus, Gephyrocapsa spp., and Emiliania huxleyi, whose shifting proportions delineate transitions between cool, stratified, and nutrient rich surface water states. Upper Holocene samples show strong C. pelagicus dominance with intermittent increases in E. huxleyi, reflecting oscillations between Atlantic influenced and Polar modified waters. Mid core intervals exhibit pronounced rises in Gephyrocapsa spp., marking episodes of enhanced small form productivity and possible changes in mixing intensity. Occasional occurrences of Helicosphaera carteri, Syracosphaera pulchra, Umbilicosphaera spp., and rare Pontosphaera taxa indicate intermittent incursions of warmer or more oligotrophic conditions. Ash layers consistently show reduced counts, simplified assemblages, and strong dominance by a single taxon, reflecting ecological suppression during volcanic deposition. Across the full sequence, the interplay between dominant and accessory taxa reveals coherent patterns of hydrographic restructuring, including shifts in thermal regimes, salinity gradients, nutrient supply, and stratification intensity. These assemblage variations provide a detailed ecological fingerprint of Holocene surface water dynamics in the Iceland Basin and form the basis for subsequent derivation of ecological contrasts and hydrographic indices. Keyword(s): absolute abundance; assemblage dynamics; Atlantic Water; coccolith assemblages; hydrographic interpretation; Micropaleontology; Paleoceanography; quantitative microscopy; sediment core DA12 11/2 ST1 GC01; SEM; taxon ecology Related to: Ukpabi, Ndubuisi; Seidenkrantz, Marit-Solveig (in press): Holocene hydrography of the Iceland Basin from coccolith ecological contrasts: A multi‑axis index for salinity and stratification. Marine Micropaleontology Coverage: LATITUDE: 61.608930 * LONGITUDE: -20.702730 DATE/TIME START: 2025-09-12T14:20:00 * DATE/TIME END: 2025-09-12T14:20:00 MINIMUM DEPTH, sediment/rock: 0.005 m * MAXIMUM DEPTH, sediment/rock: 4.180 m Event(s): DA12-11/2-GC01 (G1) * LATITUDE: 61.608930 * LONGITUDE: -20.702730 * DATE/TIME: 2025-09-12T14:20:00 * ELEVATION: -2120.0 m * LOCATION: Iceland Basin * CAMPAIGN: Dana12-11 * BASIS: Dana (1981) (URI: https://dana.dtu.dk/en/historien-om-dana) * METHOD/DEVICE: Gravity corer (GC) Parameter(s): DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) Depth, top/min [m] (Depth top) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) Depth, bottom/max [m] (Depth bot) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) Color description (Color descr) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * COMMENT: Sediment colour Sediment type (Sediment) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * COMMENT: Description Coccoliths, total [#] (Cocco) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Fields [#] (Fields) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * COMMENT: Number of fields of view Radius [cm] (Radius) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * COMMENT: Petri dish radius Radius [cm] (Radius) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * COMMENT: Optical field radius Subsample, dry mass [g] (Subsamp dm) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * COMMENT: Subsample weight Sample, dry mass [g] (Samp dm) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * COMMENT: Initial sample weight Coccoliths [10**6 #] (Cocco) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths * COMMENT: Absolute coccolith number Coccoliths [10**6 #/g] (Cocco) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths * COMMENT: Absolute coccolith abundance Calcidiscus leptoporus [#] (C. leptoporus) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Calcidiscus leptoporus [%] (C. leptoporus) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Coccolithus pelagicus [#] (C. pelagicus) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Coccolithus pelagicus [%] (C. pelagicus) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Helicosphaera carteri [#] (H. carteri) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Helicosphaera carteri [%] (H. carteri) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Gephyrocapsa spp. [#] (Gephyrocapsa spp.) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Gephyrocapsa spp. [%] (Gephyrocapsa spp.) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Emiliania huxleyi [#] (E. huxleyi) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Emiliania huxleyi [%] (E. huxleyi) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Syracosphaera pulchra [#] (S. pulchra) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Syracosphaera pulchra [%] (S. pulchra) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Umbilicosphaera spp. [#] (Umbilicosphaera spp.) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Umbilicosphaera spp. [%] (Umbilicosphaera spp.) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Pontosphaera discopora [#] (P. discopora) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Pontosphaera discopora [%] (P. discopora) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Pontosphaera japonica [#] (P. japonica) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Pontosphaera japonica [%] (P. japonica) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Braarudosphaera bigelowii [#] (B. bigelowii) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths Braarudosphaera bigelowii [%] (B. bigelowii) * PI: Ukpabi, Ndubuisi (https://orcid.org/0000-0002-8535-9041, edgar2005ng@gmail.com) * METHOD/DEVICE: Counting, coccoliths License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 2238 data points */ Depth sed [m] Depth top [m] Depth bot [m] Color descr (Sediment colour) Sediment (Description) Cocco [#] Fields [#] (Number of fields of view) Radius [cm] (Petri dish radius) Radius [cm] (Optical field radius) Subsamp dm [g] (Subsample weight) Samp dm [g] (Initial sample weight) Cocco [10**6 #] (Absolute coccolith number) Cocco [10**6 #/g] (Absolute coccolith abundance) C. leptoporus [#] C. leptoporus [%] C. pelagicus [#] C. pelagicus [%] H. carteri [#] H. carteri [%] Gephyrocapsa spp. [#] Gephyrocapsa spp. [%] E. huxleyi [#] E. huxleyi [%] S. pulchra [#] S. pulchra [%] Umbilicosphaera spp. [#] Umbilicosphaera spp. [%] P. discopora [#] P. discopora [%] P. japonica [#] P. japonica [%] B. bigelowii [#] B. bigelowii [%] 0.005 0.00 0.01 10 YR; 5/1 Dark grey, fine grained, homogeneous calcarous ooze with a smooth, soft texture. 835 37 30 0.01 0.0220 1.14050 203.108 10529.309 22 2.63 699 83.71 83 9.94 14 1.68 17 2.04 0.00 0.00 0.00 0.00 0.00 0.055 0.05 0.06 10 YR; 5/1 Dark grey, fine grained, homogeneous calcarous ooze with a smooth, soft texture. 923 37 30 0.01 0.0214 0.79230 224.514 8312.246 43 4.66 526 56.99 109 11.81 15 1.63 27 2.93 192 20.80 11 1.19 0.00 0.00 0.00 0.105 0.10 0.11 10 YR; 5/1 Dark grey, fine grained, homogeneous calcarous ooze with a smooth, soft texture. 644 33 30 0.01 0.0224 0.65900 175.636 5167.159 33 5.12 402 62.42 74 11.49 38 5.90 83 12.89 10 1.55 0.00 4 0.62 0.00 0.00 0.165 0.16 0.17 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 576 48 30 0.01 0.0206 0.14540 108.000 762.291 40 6.94 403 69.97 63 10.94 27 4.69 36 6.25 5 0.87 1 0.17 1 0.17 0.00 0.00 0.215 0.21 0.22 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 598 25 30 0.01 0.0211 0.15270 215.280 1557.974 35 5.85 396 66.22 20 3.34 53 8.86 87 14.55 7 1.17 0.00 0.00 0.00 0.00 0.255 0.25 0.26 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 624 30 30 0.01 0.0229 0.21540 187.200 1760.824 35 5.61 379 60.74 28 4.49 68 10.90 102 16.35 11 1.76 0.00 1 0.16 0.00 0.00 0.310 0.31 0.31 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 557 40 30 0.01 0.0219 0.24900 123.975 1409.579 63 11.31 392 70.38 35 6.28 23 4.13 37 6.64 5 0.90 1 0.18 1 0.18 0.00 0.00 0.355 0.35 0.36 10 YR; 2/1 Dark grey, very fine grained calcareous ooze. 469 105 30 0.01 0.0220 0.14580 40.200 266.416 33 7.04 244 52.03 19 4.05 73 15.57 98 20.90 2 0.43 0.00 0.00 0.00 0.00 0.405 0.40 0.41 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 396 75 30 0.01 0.0223 0.35110 47.520 748.174 18 4.55 278 70.20 12 3.03 45 11.36 43 10.86 0.00 0.00 0.00 0.00 0.00 0.455 0.45 0.46 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 631 28 30 0.01 0.0208 0.25920 202.821 2527.467 19 3.01 387 61.33 12 1.90 79 12.52 132 20.92 2 0.32 0.00 0.00 0.00 0.00 0.505 0.50 0.51 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 444 18 30 0.01 0.0235 0.27500 222.000 2597.872 13 2.93 306 68.92 23 5.18 37 8.33 53 11.94 11 2.48 0.00 0.00 1 0.23 0.00 0.555 0.55 0.56 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 398 28 30 0.01 0.0245 0.73520 127.929 3838.901 6 1.51 313 78.64 12 3.02 29 7.29 37 9.30 0.00 0.00 0.00 1 0.25 0.00 0.605 0.60 0.61 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 320 24 30 0.01 0.0225 0.48990 120.000 2612.800 41 12.81 182 56.88 31 9.69 11 3.44 47 14.69 8 2.50 0.00 0.00 0.00 0.00 0.655 0.65 0.66 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 383 46 30 0.01 0.0205 0.93300 74.935 3410.446 20 5.22 220 57.44 23 6.01 49 12.79 71 18.54 0.00 0.00 0.00 0.00 0.00 0.705 0.70 0.71 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 363 30 30 0.01 0.0235 0.36030 108.900 1669.646 15 4.13 245 67.49 28 7.71 33 9.09 42 11.57 0.00 0.00 0.00 0.00 0.00 0.755 0.75 0.76 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 398 36 30 0.01 0.0220 0.43910 99.500 1985.930 26 6.53 242 60.80 30 7.54 43 10.80 57 14.32 0.00 0.00 0.00 0.00 0.00 0.805 0.80 0.81 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 376 27 30 0.01 0.0220 0.51480 125.333 2932.800 28 7.45 267 71.01 21 5.59 23 6.12 37 9.84 0.00 0.00 0.00 0.00 0.00 0.855 0.85 0.86 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 378 13 30 0.01 0.0236 0.32730 261.692 3629.317 70 18.52 210 55.56 18 4.76 16 4.23 53 14.02 11 2.91 0.00 0.00 0.00 0.00 0.905 0.90 0.91 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 467 29 30 0.01 0.0233 0.40400 144.931 2512.967 31 6.64 240 51.39 40 8.57 51 10.92 73 15.63 32 6.85 0.00 0.00 0.00 0.00 0.955 0.95 0.96 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 491 25 30 0.01 0.0227 0.43850 176.760 3414.505 12 2.44 230 46.84 52 10.59 69 14.05 105 21.38 23 4.68 0.00 0.00 0.00 0.00 1.005 1.00 1.01 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 553 33 30 0.01 0.0225 0.34500 150.818 2312.545 73 13.20 346 62.57 30 5.42 23 4.16 63 11.39 18 3.25 0.00 0.00 0.00 0.00 1.055 1.05 1.06 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 479 15 30 0.01 0.0245 0.45670 287.400 5357.371 35 7.31 235 49.06 39 8.14 53 11.06 89 18.58 28 5.85 0.00 0.00 0.00 0.00 1.105 1.10 1.11 5 Y; 3/1 Dark grey, fine to silty calcareous ooze. 537 41 30 0.01 0.0238 0.27680 117.878 1370.951 38 7.08 235 43.76 26 4.84 57 10.61 143 26.63 38 7.08 0.00 0.00 0.00 0.00 1.175 1.17 1.18 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 462 33 30 0.01 0.0203 0.40600 126.000 2520.000 15 3.25 267 57.79 25 5.41 45 9.74 93 20.13 17 3.68 0.00 0.00 0.00 0.00 1.205 1.20 1.21 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 368 30 30 0.01 0.0217 0.58710 110.400 2986.905 17 4.62 246 66.85 30 8.15 27 7.34 37 10.05 11 2.99 0.00 0.00 0.00 0.00 1.255 1.25 1.26 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 46 15 30 0.01 0.0240 0.20110 27.600 231.265 5 10.87 7 15.22 3 6.52 12 26.09 17 36.96 1 2.17 0.00 1 2.17 0.00 0.00 1.305 1.30 1.31 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 188 11 30 0.01 0.0240 0.21690 153.818 1390.132 32 17.02 50 26.60 7 3.72 27 14.36 67 35.64 5 2.66 0.00 0.00 0.00 0.00 1.355 1.35 1.36 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 469 13 30 0.01 0.0215 0.43090 324.692 6507.438 35 7.46 218 46.48 55 11.73 68 14.50 93 19.83 0.00 0.00 0.00 0.00 0.00 1.405 1.40 1.41 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 323 16 30 0.01 0.0211 0.16060 181.688 1382.892 98 30.34 15 4.64 20 6.19 79 24.46 104 32.20 7 2.17 0.00 0.00 0.00 0.00 1.455 1.45 1.46 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 747 25 30 0.01 0.0219 0.17450 268.920 2142.764 17 2.28 266 35.61 17 2.28 138 18.47 297 39.76 12 1.61 0.00 0.00 0.00 0.00 1.505 1.50 1.51 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 355 30 30 0.01 0.0219 0.24180 106.500 1175.877 17 4.79 270 76.06 5 1.41 25 7.04 37 10.42 1 0.28 0.00 0.00 0.00 0.00 1.555 1.55 1.56 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 661 37 30 0.01 0.0204 0.41300 160.784 3255.083 217 32.83 15 2.27 38 5.75 178 26.93 203 30.71 10 1.51 0.00 0.00 0.00 0.00 1.605 1.60 1.61 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 369 38 30 0.01 0.0232 0.80340 87.395 3026.419 19 5.15 275 74.53 16 4.34 18 4.88 34 9.21 7 1.90 0.00 0.00 0.00 0.00 1.655 1.65 1.66 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 427 47 30 0.01 0.0209 0.58090 81.766 2272.624 26 6.09 139 32.55 13 3.04 43 10.07 198 46.37 8 1.87 0.00 0.00 0.00 0.00 1.705 1.70 1.71 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 523 32 30 0.01 0.0213 0.45680 147.094 3154.574 39 7.46 343 65.58 9 1.72 27 5.16 88 16.83 17 3.25 0.00 0.00 0.00 0.00 1.755 1.75 1.76 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 359 37 30 0.01 0.0216 0.23810 87.324 962.589 15 4.18 280 77.99 10 2.79 21 5.85 33 9.19 0.00 0.00 0.00 0.00 0.00 1.805 1.80 1.81 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 520 78 30 0.01 0.0223 0.36810 60.000 990.404 34 6.54 255 49.04 15 2.88 97 18.65 108 20.77 11 2.12 0.00 0.00 0.00 0.00 1.855 1.85 1.86 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 651 40 30 0.01 0.0207 0.48800 146.475 3453.130 36 5.53 245 37.63 21 3.23 137 21.04 189 29.03 23 3.53 0.00 0.00 0.00 0.00 1.905 1.90 1.91 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 434 28 30 0.01 0.0222 0.64950 139.500 4081.318 33 7.60 267 61.52 16 3.69 32 7.37 68 15.67 18 4.15 0.00 0.00 0.00 0.00 1.955 1.95 1.96 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 313 72 30 0.01 0.0212 0.84510 39.125 1559.648 48 15.34 240 76.68 20 6.39 2 0.64 3 0.96 0.00 0.00 0.00 0.00 0.00 2.005 2.00 2.01 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 470 82 30 0.01 0.0205 0.38950 51.585 980.122 46 9.79 240 51.06 13 2.77 73 15.53 98 20.85 0.00 0.00 0.00 0.00 0.00 2.055 2.05 2.06 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 550 85 30 0.01 0.0231 0.21020 58.235 529.916 30 5.45 265 48.18 5 0.91 105 19.09 127 23.09 17 3.09 0.00 0.00 1 0.18 0.00 2.105 2.10 2.11 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 384 100 30 0.01 0.0213 0.45650 34.560 740.687 24 6.25 191 49.74 3 0.78 63 16.41 98 25.52 5 1.30 0.00 0.00 0.00 0.00 2.165 2.16 2.17 5Y; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 471 64 30 0.01 0.0223 0.40370 66.234 1199.050 28 5.94 240 50.96 30 6.37 63 13.38 103 21.87 7 1.49 0.00 0.00 0.00 0.00 2.205 2.20 2.21 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 630 112 30 0.01 0.0202 0.46840 50.625 1173.899 97 15.40 209 33.17 9 1.43 72 11.43 237 37.62 6 0.95 0.00 0.00 0.00 0.00 2.255 2.25 2.26 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 458 61 30 0.01 0.0227 0.50700 67.574 1509.247 39 8.52 249 54.37 18 3.93 63 13.76 89 19.43 0.00 0.00 0.00 0.00 0.00 2.305 2.30 2.31 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 497 100 30 0.01 0.0206 0.31550 44.730 685.064 71 14.29 132 26.56 17 3.42 64 12.88 213 42.86 0.00 0.00 0.00 0.00 0.00 2.355 2.35 2.36 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 731 97 30 0.01 0.0203 0.45220 67.825 1510.855 96 13.13 188 25.72 21 2.87 193 26.40 228 31.19 5 0.68 0.00 0.00 0.00 0.00 2.405 2.40 2.41 10 YR; 2/1 Dark grey ash 681 60 30 0.01 0.0212 0.40080 102.150 1931.213 87 12.78 120 17.62 2 0.29 195 28.63 270 39.65 7 1.03 0.00 0.00 0.00 0.00 2.505 2.50 2.51 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 793 55 30 0.01 0.0219 0.23120 129.764 1369.925 128 16.14 251 31.65 12 1.51 205 25.85 197 24.84 0.00 0.00 0.00 0.00 0.00 2.555 2.55 2.56 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 756 34 30 0.01 0.0216 0.32610 200.118 3021.221 39 5.16 264 34.92 15 1.98 138 18.25 285 37.70 15 1.98 0.00 0.00 0.00 0.00 2.605 2.60 2.61 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 613 93 30 0.01 0.0216 0.36920 59.323 1013.977 112 18.27 66 10.77 7 1.14 143 23.33 273 44.54 12 1.96 0.00 0.00 0.00 0.00 2.655 2.65 2.66 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 739 81 30 0.01 0.0232 0.19610 82.111 694.051 170 23.00 123 16.64 14 1.89 246 33.29 184 24.90 2 0.27 0.00 0.00 0.00 0.00 2.705 2.70 2.71 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 604 109 30 0.01 0.0210 0.37750 49.872 896.501 152 25.17 130 21.52 16 2.65 187 30.96 118 19.54 0.00 0.00 0.00 0.00 1 0.17 2.755 2.75 2.76 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 615 99 30 0.01 0.0202 0.83110 55.909 2300.299 126 20.49 143 23.25 11 1.79 253 41.14 73 11.87 8 1.30 1 0.16 0.00 0.00 0.00 2.805 2.80 2.81 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 706 34 30 0.01 0.0200 0.03138 186.882 293.218 117 16.57 72 10.20 7 0.99 132 18.70 375 53.12 3 0.42 0.00 0.00 0.00 0.00 2.855 2.85 2.86 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 459 41 30 0.01 0.0208 0.32140 100.756 1556.875 160 34.86 23 5.01 3 0.65 147 32.03 126 27.45 0.00 0.00 0.00 0.00 0.00 2.905 2.90 2.91 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 513 35 30 0.01 0.0205 0.24750 131.914 1592.624 178 34.70 29 5.65 0 0.00 152 29.63 154 30.02 0.00 0.00 0.00 0.00 0.00 2.955 2.95 2.96 10 YR; 2/1 Dark grey, very fine grained calcareous ooze. 558 109 30 0.01 0.0214 0.41470 46.073 892.833 114 20.43 98 17.56 14 2.51 193 34.59 132 23.66 7 1.25 0.00 0.00 0.00 0.00 3.005 3.00 3.01 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 392 137 30 0.01 0.0213 0.60420 25.752 730.481 151 38.52 92 23.47 12 3.06 39 9.95 98 25.00 0.00 0.00 0.00 0.00 0.00 3.055 3.05 3.06 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 531 55 30 0.01 0.0230 0.37170 86.891 1404.233 160 30.13 64 12.05 18 3.39 83 15.63 204 38.42 0.00 0.00 0.00 2 0.38 0.00 3.105 3.10 3.11 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 881 115 30 0.01 0.0208 0.37980 68.948 1258.961 164 18.62 113 12.83 17 1.93 328 37.23 247 28.04 12 1.36 0.00 0.00 0.00 0.00 3.155 3.15 3.16 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 579 95 30 0.01 0.0219 0.40060 54.853 1003.377 111 19.17 172 29.71 21 3.63 217 37.48 58 10.02 0.00 0.00 0.00 0.00 0.00 3.205 3.20 3.21 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 519 53 30 0.01 0.0225 0.57260 88.132 2242.863 74 14.26 69 13.29 22 4.24 224 43.16 105 20.23 23 4.43 1 0.19 0.00 1 0.19 0.00 3.255 3.25 3.26 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 284 70 30 0.01 0.0213 0.71580 36.514 1227.086 104 36.62 25 8.80 8 2.82 29 10.21 117 41.20 0.00 1 0.35 0.00 0.00 0.00 3.305 3.30 3.31 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 228 80 30 0.01 0.0225 0.47190 25.650 537.966 105 46.05 20 8.77 8 3.51 7 3.07 88 38.60 0.00 0.00 0.00 0.00 0.00 3.355 3.35 3.36 10 YR; 2/1 Dark grey, very fine grained calcareous ooze. 405 97 30 0.01 0.0221 1.15910 37.577 1970.854 237 58.52 16 3.95 14 3.46 28 6.91 107 26.42 2 0.49 0.00 0.00 0.00 1 0.25 3.505 3.50 3.51 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 564 90 30 0.01 0.0205 0.38850 56.400 1068.849 260 46.10 29 5.14 36 6.38 135 23.94 87 15.43 17 3.01 0.00 0.00 0.00 0.00 3.605 3.60 3.61 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 607 56 30 0.01 0.0219 0.37260 97.554 1659.747 168 27.68 30 4.94 42 6.92 174 28.67 183 30.15 9 1.48 0.00 0.00 1 0.16 0.00 3.655 3.65 3.66 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 990 42 30 0.01 0.0226 0.35940 212.143 3373.635 296 29.90 34 3.43 23 2.32 302 30.51 317 32.02 17 1.72 0.00 0.00 1 0.10 0.00 3.705 3.70 3.71 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 662 68 30 0.01 0.0225 0.45600 87.618 1775.718 205 30.97 13 1.96 18 2.72 234 35.35 187 28.25 5 0.76 0.00 0.00 0.00 0.00 3.755 3.75 3.76 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 759 64 30 0.01 0.0225 0.90340 106.734 4285.504 284 37.42 11 1.45 18 2.37 234 30.83 207 27.27 5 0.66 0.00 0.00 0.00 0.00 3.805 3.80 3.81 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 510 39 30 0.01 0.0235 0.45440 117.692 2275.718 297 58.24 22 4.31 13 2.55 98 19.22 72 14.12 8 1.57 0.00 0.00 0.00 0.00 3.855 3.85 3.86 10 YR; 2/1 Dark grey ash 207 83 30 0.01 0.0219 0.22800 22.446 233.682 111 53.62 7 3.38 5 2.42 18 8.70 63 30.43 3 1.45 0.00 0.00 0.00 0.00 3.895 3.89 3.90 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 466 65 30 0.01 0.0206 0.51010 64.523 1597.729 47 10.09 270 57.94 16 3.43 34 7.30 78 16.74 21 4.51 0.00 0.00 0.00 0.00 4.005 4.00 4.01 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 617 92 30 0.01 0.0206 0.43060 60.359 1261.673 26 4.21 302 48.95 17 2.76 22 3.57 237 38.41 13 2.11 0.00 0.00 0.00 0.00 4.055 4.05 4.06 7.5 YR; 4/1 Dark grey, very fine grained, homogeneous calcarous ooze with a smooth, soft texture. 557 130 30 0.01 0.0232 0.38800 20.146 336.927 42 7.54 196 35.19 44 7.90 59 10.59 199 35.73 17 3.05 0.00 0.00 0.00 0.00 4.105 4.10 4.11 10 YR; 2/1 Dark grey ash 149 79 30 0.01 0.0214 0.30520 16.975 242.088 16 10.74 95 63.76 8 5.37 6 4.03 20 13.42 2 1.34 0.00 0.00 2 1.34 0.00 4.160 4.15 4.17 10 YR; 2/1 Dark grey ash 7 31 30 0.01 0.0203 0.77350 2.032 77.436 2 28.57 2 28.57 0 0.00 0 0.00 3 42.86 0 0.00 0.00 0.00 0.00 0.00 4.180 4.17 4.19 10 YR; 2/1 Dark grey ash 224 87 30 0.01 0.0208 0.75290 23.172 838.775 64 28.57 17 7.59 25 11.16 25 11.16 93 41.52 0.00 0.00 0.00 0.00 0.00