Weddell Sea ODP 690B Paleocene-Eocene Thermal Maximum Carbon Cycle Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!! NAME OF DATA SET: Weddell Sea ODP 690B Paleocene-Eocene Thermal Maximum Carbon Cycle Data LAST UPDATE: 12/2005 (Original receipt by WDC Paleo) CONTRIBUTORS: Daniel Clay Kelly, Stephen Schellenberg, James Zachos, Timothy Bralower IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2005-083 SUGGESTED DATA CITATION: Kelly, D.C., et al. 2005. Weddell Sea ODP 690B Paleocene-Eocene Thermal Maximum Carbon Cycle Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2005-083. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Kelly, D.C., J.C. Zachos, T.J. Bralower, and S.A. Schellenberg. 2005. Enhanced Terrestrial Weathering/Runoff and Surface-Ocean Carbonate Production during the Recovery Stages of the Paleocene-Eocene Thermal Maximum. Paleoceanography, Vol. 20, PA4023, doi:10.1029/2005PA001163, 17 Dec. 2005. ABSTRACT: The carbonate saturation profile of the oceans shoaled markedly during a transient global warming event known as the Paleocene-Eocene thermal maximum (PETM) (circa 55 Ma). The rapid release of large quantities of carbon into the ocean-atmosphere system is believed to have triggered this intense episode of dissolution along with a negative carbon isotope excursion (CIE). The brevity (120–220 kyr) of the PETM reflects the rapid enhancement of negative feedback mechanisms within Earth’s exogenic carbon cycle that served the dual function of buffering ocean pH and reducing atmospheric greenhouse gas levels. Detailed study of the PETM stratigraphy from Ocean Drilling Program Site 690 (Weddell Sea) reveals that the CIE recovery period, which postdates the CIE onset by ~80 kyr, is represented by an expanded (~2.5 m thick) interval containing a unique planktic foraminiferal assemblage strongly diluted by coccolithophore carbonate. Collectively, the micropaleontological and sedimentological changes preserved within the CIE recovery interval reflect a transient state when ocean-atmosphere chemistry fostered prolific coccolithophore blooms that suppressed the local lysocline to relatively deeper depths. A prominent peak in the abundance of the clay mineral kaolinite is associated with the CIE recovery interval, indicating that continental weathering/runoff intensified at this time as well (Robert and Kennett, 1994). Such parallel stratigraphic changes are generally consonant with the hypothesis that enhanced continental weathering/runoff and carbonate precipitation helped sequester carbon during the PETM recovery period (e.g., Dickens et al., 1997; Zachos et al., 2005). GEOGRAPHIC REGION: Weddell Sea PERIOD OF RECORD: Paleocene-Eocene thermal maximum (PETM, ~55 Ma). DESCRIPTION: Kelly et al. 2005 Weddell Sea Paleocene-Eocene Thermal Maximum Carbon Cycle Data. Ocean Drilling Program Site 690 (Weddell Sea) 19H/690B: 65 deg 10' S, 1 deg 12' E, 2914m. depth. Table 1 reports the relative abundances of planktic foraminiferal taxa (>150 microns). Table 2 reports the relative abundances of calcareous nannofossil taxa after removing the genus Towieus. Table 3 reports stable isotope data measured from assorted planktic foraminiferal and benthic foraminiferal taxa. The original benthic foram (N. truempyi) values have been adjusted using the correction factors of Katz et al. (2003). Table 4 reports such sedimentological data as wt% coarse-fraction (>63 microns), wt% carbonate, and planktic foram fragmentation (>125 microns). DATA: 1. Table 1 Forams Column 1-3: ODP Hole, Core, Section, Interval Column 4: Core Depth (m) Column 5: Number of shells counted Column 6: %Subbotina Column 7: %A. subsph. Column 8: %A. nitida Column 9: %A. praepenta Column 10: % A nit + paerp Column 11: %A. soldado Column 12: %A. coaling Column 13: %A. sold + coal Column 14: %A. wilcox Column 15: %A. mckannai Column 16: %Acarinina spp. Column 17: %G. australis Column 18: %Chilo Column 19: %Moroz HoleCoreSecInterval Depth N %Subb %A.sub A.niti %A.praep %A.nit+pa %A.sold %A.coal %A.sol+co %A.wilc %A.mckan %Acar.sp %G.austr %Chilo %Moroz 690B18H 6 124-126 165.94 373 26.00 4.00 0 0.00 0.00 26.50 42.90 69.44 0.00 0 73.46 0.54 0 0 690B18H 6 134-136 166.04 321 52.96 1.60 0 0.00 0.00 26.79 17.45 44.24 0.00 0 45.79 0.62 0 0 690B18H 6 144-146 166.14 344 30.23 2.91 0 0.00 0.00 16.86 50.00 66.86 0.00 0 69.77 0.00 0 0 690B18H 7 6-8cm 166.26 530 73.21 12.83 0 0.00 0.00 9.25 4.34 13.58 0.00 0 26.42 0.38 0 0 690B18H 7 16-18 166.36 281 91.46 3.56 0 0.00 0.00 2.85 0.00 2.85 0.00 0 6.41 2.14 0 0 690B19H 1 0-2 166.90 480 94.79 1.88 0 0.00 0.00 0.00 0.00 0.00 0.00 0 1.88 3.33 0 0 690B19H 1 4-6cm 166.94 245 90.61 2.04 0 0.00 0.00 0.00 0.00 0.00 0.00 0 2.04 7.35 0 0 690B19H 1 14-16 167.04 254 95.28 2.36 0 0.00 0.00 0.00 0 0.00 0 0 2.36 2.36 0 0 690B19H 1 24-26 167.14 398 79.15 20.10 0.75 0.00 0.75 0.00 0 0.00 0 0 20.85 0.00 0 0 690B19H 1 34-36 167.24 303 74.59 25.08 0.00 0.00 0.00 0.00 0 0.00 0 0 25.08 0.00 0 0 690B19H 1 44-46 167.34 298 68.12 31.88 0.00 0.00 0.00 0.00 0 0.00 0 0 31.88 0.00 0 0 690B19H 1 54-56 167.44 377 82.23 17.77 0.00 0.00 0.00 0.00 0 0.00 0 0 17.77 0.00 0 0 690B19H 1 64-66 167.54 337 73.00 25.82 0.59 0.00 0.59 0.30 0 0.30 0 0 26.71 0.00 0 0 690B19H 1 74-76 167.64 287 77.00 23.00 0.00 0.00 0.00 0.00 0 0.00 0 0 23.00 0.00 0 0 690B19H 1 84-86 167.74 441 66.21 3.79 0.00 0.00 0.00 0.00 0 0.00 0 0 3.79 0.00 0 0 690B19H 1 94-96 167.84 338 60.06 39.94 0.00 0.00 0.00 0.00 0 0.00 0 0 39.94 0.00 0 0 690B19H 1 105-107 167.95 271 59.41 39.48 1.11 0.00 1.11 0.00 0 0.00 0 0 40.59 0.00 0 0 690B19H 1 115-117 168.05 324 54.63 45.37 0.00 0.00 0.00 0.00 0 0.00 0 0 45.37 0.00 0 0 690B19H 1 124-126 168.14 287 45.99 52.61 0.70 0.00 0.70 0.70 0 0.70 0 0 54.01 0.00 0 0 690B19H 1 134-136 168.24 256 41.80 55.08 3.13 0.00 3.13 0.00 0 0.00 0 0 58.21 0.00 0 0 690B19H 1 144-146 168.34 387 38.50 59.69 0.52 0.00 0.52 0.26 1.03 1.29 0.00 0 61.50 0.00 0 0 690B19H 2 3-5cm 168.43 268 51.49 43.66 2.61 0.00 2.61 0.37 0.00 0.37 0.00 0 46.64 0.00 0 0 690B19H 2 13-15 168.53 203 44.33 51.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0 51.23 0.00 0 0 690B19H 2 25-27 168.65 350 59.43 38.29 1.43 0.00 1.43 0.29 0.57 0.86 0.00 0 40.58 0.00 0 0 690B19H 2 37-39 168.77 442 71.49 26.92 0.90 0.00 0.99 0.00 0 0.00 0 0 27.82 0.00 0.45 0 690B19H 2 43-45 168.83 416 56.97 41.11 1.44 0.00 1.44 0.24 0 0.24 0 0 42.79 0.00 0.24 0 690B19H 2 54-56 168.94 371 62.80 30.73 5.93 0.00 5.93 0.54 0 0.54 0 0 37.20 0.00 0.00 0 690B19H 2 63-65 169.03 402 62.29 29.35 3.73 0.00 3.73 3.73 0.50 4.23 0.00 0 37.31 0.00 0.00 0 690B19H 2 73-75 169.13 284 55.99 26.76 9.51 0.00 9.51 5.28 2.46 7.74 0.00 0 44.01 0.00 0.00 0 690B19H 2 83-85 169.23 376 47.87 17.29 5.59 0.00 5.59 15.69 13.03 28.72 0.00 0 51.60 0.53 0.00 0 690B19H 2 93-95 169.33 294 25.51 20.75 4.76 0.00 4.76 8.16 40.82 48.98 0.00 0 74.49 0.00 0.00 0 690B19H 2 105-107 169.45 452 24.56 14.38 2.43 0.00 2.43 10.18 47.35 57.53 0.00 0.00 74.34 0.00 0.22 0 690B19H 2 115-117 169.55 398 23.12 25.38 10.80 0.00 10.80 13.32 26.38 39.70 0.00 0.00 75.88 0.00 0.50 0 690B19H 2 120-121 169.60 266 21.05 5.26 10.15 0.00 10.15 4.14 56.02 60.16 0 0 77.82 0 0 0 690B19H 2 130-131 169.70 244 36.89 3.28 4.1 0.00 4.1 1.64 50.82 52.46 0 0 61.48 0 0 0 690B19H 2 135-136 169.75 272 46.69 2.21 5.88 0.00 5.88 3.31 39.71 43.02 0 0 52.57 0.37 0 0.37 690B19H 2 140-142 169.80 283 46.29 2.47 2.83 0.00 2.83 7.07 37.81 44.88 0 0 52.30 0.35 0.71 0.35 690B19H 2 144-146 169.84 234 55.98 3.42 5.98 0.00 5.98 5.13 28.63 33.76 0 0 43.59 0 0.43 0 690B19H 3 0-1cm 169.91 359 52.92 2.51 6.96 0.00 6.96 6.13 28.41 34.54 0 0 45.13 0.28 0.56 0.28 690B19H 3 7-8cm 169.98 414 59.90 1.69 7.73 0.00 7.73 3.38 22.95 26.33 0.24 0 36.96 0.24 0.48 1.45 690B19H 3 14-15 170.05 308 48.05 2.6 8.77 0.00 8.77 4.22 30.52 34.74 0 0 47.40 0 0.97 3.25 690B19H 3 15-16 170.06 298 47.32 1.68 9.4 0.00 9.4 8.39 26.51 34.90 0 0 47.99 0.34 1.34 2.68 690B19H 3 20-21 170.11 301 46.51 1.99 7.97 0.00 7.97 9.97 21.93 31.90 1.00 0 45.18 0.33 1.00 6.64 690B19H 3 25-26 170.16 299 62.88 4.01 7.69 0.00 7.69 6.35 12.71 19.06 0.67 0.33 32.78 0.33 0.33 3.34 690B19H 3 30-31 170.21 265 50.57 3.02 8.68 0.00 8.68 14.34 15.85 30.19 1.51 0 44.15 0.38 1.13 3.77 690B19H 3 35-36 170.26 294 54.08 6.80 11.56 0.00 11.56 8.50 13.95 22.45 0.34 0.68 42.18 0 0.68 2.38 690B19H 3 40-41 170.31 326 54.60 7.06 12.88 0.00 12.88 6.44 15.64 22.08 0.31 0 43.56 0.31 0.61 0.92 690B19H 3 45-46 170.35 353 45.89 6.80 12.18 0.00 12.18 14.16 16.43 30.59 0.00 0.28 50.99 0 0.57 2.55 690B19H 3 52-53 170.42 398 38.69 10.80 9.30 0.00 9.30 21.61 16.08 37.69 0 1.26 61.31 0 0.25 1.01 690B19H 3 55-56 170.45 353 36.26 9.35 5.1 1.13 6.23 22.66 19.55 42.21 0 0.85 61.19 0 0.28 1.42 690B19H 3 56-57 170.46 232 17.24 4.31 21.55 2.16 23.71 18.10 25.43 43.53 0 3.45 78.88 0.86 0.86 1.72 690B19H 3 59-60 170.49 135 16.30 11.85 30.37 0 30.37 8.89 24.44 33.33 0 1.48 83.70 0 0 0 690B19H 3 61-62 170.51 121 22.31 11.57 21.49 0.83 22.32 14.05 22.31 36.36 0 2.48 77.69 0 0 0 690B19H 3 63-64 170.53 132 21.97 12.88 24.24 3.03 27.27 12.88 20.45 33.33 0 1.52 77.27 0 0.76 2.27 690B19H 3 64-65 170.54 212 17.92 14.62 14.62 1.42 16.04 10.38 26.42 36.80 0 5.19 81.13 0 0.47 0.94 690B19H 3 66-67 170.56 149 24.16 0.67 20.81 0.00 20.81 12.75 20.13 32.88 0.67 5.37 75.84 0 0 2.01 690B19H 3 68-69 170.58 132 24.24 1.52 5.3 2.27 7.57 3.03 50.00 53.03 0.00 3.03 75.76 0 0 2.27 690B19H 3 70-71 170.60 220 32.27 7.27 12.27 4.09 16.36 5.91 32.73 38.64 0.00 0.45 67.73 0 1.36 1.36 690B19H 3 71-72 170.61 271 35.42 5.54 15.87 2.95 18.82 4.06 31.37 35.43 0.00 0.37 64.58 0 0.37 1.85 690B19H 3 72-73 170.62 325 32.00 6.77 16.62 1.54 18.16 7.08 30.15 37.23 0.00 0.92 68.00 0 0.62 1.85 690B19H 3 73-75 170.64 266 37.97 2.63 29.32 3.01 32.33 1.13 21.43 22.56 0.00 0.75 62.03 0 0 0.75 690B19H 3 74-75 170.65 223 43.95 4.93 20.18 2.24 22.42 5.38 19.28 24.66 0.00 0.90 56.05 0 0 1.35 690B19H 3 76-77 170.67 232 50.43 10.78 21.98 1.72 23.7 1.29 11.64 12.93 0.00 0.86 49.57 0 0 0.86 690B19H 3 80-81 170.71 292 43.84 15.41 28.42 2.40 30.82 1.37 7.19 8.56 0.00 0 56.16 0 0 0 690B19H 3 82-83 170.73 328 47.87 18.60 20.43 2.44 22.87 2.13 7.93 10.06 0.00 0 52.13 0 0 0.30 690B19H 3 84-85 170.75 274 49.27 14.60 26.64 2.19 28.83 1.46 5.47 6.93 0.00 0 50.73 0 0 0 690B19H 3 85-86 170.76 242 46.69 19.42 22.31 3.31 25.62 0.41 7.85 8.26 0.00 0 53.31 0 0 0 690B19H 3 87-88 170.78 218 40.83 18.35 35.78 1.83 37.61 0.00 3.21 3.21 0.00 0 59.17 0 0 0 690B19H 3 89-90 170.80 282 28.37 18.79 37.59 7.09 44.68 2.13 4.96 7.09 0.00 1.06 71.63 0 0 0 690B19H 3 90-91 170.81 257 23.74 30.74 35.41 4.67 40.08 1.56 3.50 5.06 0.00 0.39 76.26 0 0 0 690B19H 3 92-93 170.83 217 24.88 16.59 41.47 7.83 49.3 1.84 5.53 7.37 0.00 1.84 75.12 0 0 0 690B19H 3 94-95 170.85 294 30.95 12.24 39.8 6.46 46.26 1.70 4.08 5.78 0.00 4.76 69.05 0 0 0 690B19H 3 95-96 170.86 290 35.17 3.79 38.28 5.86 44.14 2.41 9.31 11.72 0.00 5.17 64.83 0 0 0 690B19H 3 99-100 170.90 439 20.05 5.69 52.85 6.61 59.46 2.73 6.83 9.56 0.00 5.24 79.95 0 0 0 690B19H 3 104-105 170.94 313 18.21 7.03 54.31 7.35 61.66 3.19 4.47 7.66 0.00 5.43 81.79 0 0 0 2. Table 2 Calcareous Nannofossils Column 1: ODP Hole Column 2: Depth, m. Column 3: Number of shells counted Column 4: %Discoaster Column 5: %Fasciculithus Column 6: %Sphenolithus Hole Depth(m) N %Discoaster %Fasciculithus %Sphenolithus 690B 166.14 200 0.50 0.00 6.00 690B 166.36 200 0.00 0.50 4.00 690B 166.94 200 0.00 4.50 2.00 690B 167.04 200 0.00 1.50 3.50 690B 167.14 200 2.00 1.00 2.00 690B 167.24 300 0.67 0.67 2.67 690B 167.34 200 0.00 2.00 1.50 690B 167.44 200 0.00 0.00 1.00 690B 167.54 200 0.00 0.00 0.50 690B 167.64 200 0.00 0.00 2.00 690B 167.74 200 0.50 1.00 2.00 690B 167.84 200 0.50 0.50 1.50 690B 167.95 200 0.00 0.50 2.50 690B 168.05 200 2.00 0.50 0.50 690B 168.14 200 0.00 0.00 0.50 690B 168.24 200 0.00 0.00 0.50 690B 168.34 200 0.00 0.50 1.50 690B 168.41 200 0.50 0.50 1.00 690B 168.60 200 0.00 1.00 1.50 690B 168.80 200 0.50 0.00 1.50 690B 168.83 200 0.00 0.50 3.00 690B 168.98 200 0.50 0.50 4.00 690B 169.03 200 0.50 0.00 5.50 690B 169.13 200 1.00 0.50 9.00 690B 169.19 200 0.00 0.50 6.50 690B 169.23 200 1.50 1.50 5.50 690B 169.33 200 1.50 2.50 6.00 690B 169.40 200 3.50 0.00 6.50 690B 169.50 200 4.50 1.50 11.50 690B 169.60 200 4.00 3.50 18.50 690B 169.70 200 5.00 2.50 20.00 690B 169.80 200 5.50 4.00 6.00 690B 169.91 200 3.50 7.00 7.00 690B 169.97 200 7.50 9.50 5.00 690B 170.04 200 4.00 10.50 4.00 690B 170.06 200 13.00 29.00 5.00 690B 170.11 200 11.50 18.50 3.00 690B 170.16 200 10.00 14.00 5.00 690B 170.21 200 15.50 19.00 6.50 690B 170.26 200 16.50 32.50 3.50 690B 170.31 200 11.50 25.50 5.50 690B 170.34 200 12.50 31.50 5.50 690B 170.37 200 17.50 34.00 5.00 690B 170.41 300 15.67 31.33 4.33 690B 170.42 300 10.67 37.67 5.67 690B 170.43 300 8.67 30.67 6.33 690B 170.44 300 12.00 38.67 6.67 690B 170.45 300 12.67 33.00 7.33 690B 170.46 300 11.33 26.67 7.00 690B 170.47 300 13.00 22.33 6.33 690B 170.48 300 12.33 20.33 8.67 690B 170.49 300 12.67 21.33 6.33 690B 170.5 300 10.00 18.33 5.67 690B 170.51 300 14.33 22.00 6.67 690B 170.52 300 18.00 19.67 13.00 690B 170.53 300 20.33 19.00 9.33 690B 170.54 300 21.33 25.00 9.67 690B 170.55 300 12.67 28.67 5.67 690B 170.56 300 15.67 26.67 6.33 690B 170.57 300 20.33 20.00 9.67 690B 170.58 300 14.33 25.67 8.00 690B 170.59 300 16.33 27.00 11.67 690B 170.6 300 11.33 23.67 10.00 690B 170.61 300 15.67 22.00 8.33 690B 170.62 300 15.00 23.33 7.33 690B 170.63 300 11.00 23.67 8.00 690B 170.64 300 18.67 21.33 8.67 690B 170.65 300 8.33 14.33 6.33 690B 170.66 300 7.00 8.00 10.67 690B 170.67 300 1.00 4.67 7.00 690B 170.68 300 1.33 2.33 8.33 690B 170.7 300 1.00 3.67 15.00 690B 170.71 300 1.33 1.00 2.33 690B 170.72 300 1.00 1.67 8.67 690B 170.73 300 1.00 3.67 9.33 690B 170.74 300 1.33 4.67 11.67 690B 170.75 300 1.00 5.00 15.33 690B 170.76 300 0.67 6.00 13.67 690B 170.77 300 0.50 1.50 2.33 690B 170.78 300 0.00 2.50 2.50 690B 170.79 300 0.50 2.50 2.00 690B 170.8 300 0.50 0.50 7.00 690B 170.81 300 0.00 2.00 3.00 690B 170.82 300 0.00 1.50 3.50 690B 170.83 300 0.00 1.50 6.00 690B 170.84 300 1.50 0.50 4.00 690B 170.85 300 0.50 2.50 7.50 690B 170.86 300 0.00 4.50 6.50 690B 170.87 300 0.00 1.50 5.00 690B 170.88 300 0.00 2.50 6.00 690B 170.89 300 1.50 0.00 4.00 690B 170.9 300 0.00 2.00 3.50 690B 170.91 300 0.50 1.00 4.50 690B 170.92 300 0.50 0.50 5.00 690B 170.93 300 0.00 0.00 6.50 690B 170.94 300 2.50 0.00 7.00 690B 170.95 300 0.00 0.50 5.00 690B 170.96 300 0.00 0.50 8.50 690B 170.97 300 0.00 2.50 5.50 690B 170.98 300 1.50 1.00 3.00 690B 170.99 300 0.50 3.50 2.00 690B 171 300 1.00 0.50 2.50 3. Table 3, Isotopes Column 1: ODP Hole Column 2: Core Depth (m) Column 3: 13C N. truemp Column 4: 13C N. truemp (corrected) Column 5: 13C N. truemp (mean corrected) Column 6: O18 N. truemp Column 7: O18 N. truemp (corrected) Column 8: O18 N. truemp (mean corrected) Column 9: 13C Subbotina Column 10: 13C Subbotina (mean) Column 11: 18O Subbotina Column 12: 18O Subbotina (mean) Column 13: 13C A. subsph Column 14: 13C A. subsph (mean) Column 15: 18O A. subsph Column 16: 18O A. subsph (mean) Column 17: 13C A. sold Column 18: 13C A. sold (mean) Column 19: 18O A. sold Column 20: 18O A. sold (mean) Hole Depth 13C N.tr 13C N.tr 13C N.tr O18 N.tr O18 N.tr 18O N.tr 13C Sub 13C Sub 18OSub 18OSub 13CA.su 13C A.su 18O A.su 18O A.su 13C A.so 13C A.so 18O A.so 18O A.so corr. *Mn.corr. corr. *Mn.corr. *Mean *Mean *Mean *Mean *Mean *Mean 690B 166.90 0.87 0.41 0.41 -0.03 0.26 0.26 1.23 1.23 -0.16 -0.16 3.06 3.06 -0.36 -0.36 690B 166.94 0.68 0.22 0.25 -0.13 0.18 0.09 1.03 1.03 -0.08 -0.08 2.17 2.17 -0.77 -0.77 690B 166.94 0.75 0.29 -0.33 0.02 690B 166.94 0.69 0.23 -0.29 0.06 690B 167.04 0.55 0.09 0.08 -0.27 0.07 0.03 0.82 0.82 -0.17 -0.17 2.07 2.07 -0.37 -0.37 690B 167.04 0.49 0.03 -0.30 0.05 690B 167.04 0.47 0.01 -0.24 0.09 690B 167.04 0.55 0.09 -0.38 -0.02 690B 167.04 0.60 0.14 -0.45 -0.07 690B 167.04 0.56 0.10 -0.27 0.07 690B 167.14 0.45 -0.01 0.07 -0.25 0.09 0.06 0.79 0.79 -0.12 -0.12 1.90 1.90 -0.51 -0.51 690B 167.14 0.54 0.08 -0.18 0.14 690B 167.14 0.58 0.12 -0.42 -0.05 690B 167.24 0.51 0.05 0.05 -0.37 -0.01 0.00 0.78 0.80 -0.16 -0.20 1.93 1.96 -0.38 -0.40 690B 167.24 0.50 0.04 -0.34 0.02 0.83 -0.24 1.99 -0.41 690B 167.34 0.44 -0.02 -0.02 -0.26 0.08 0.08 0.82 0.82 -0.13 -0.13 1.60 1.60 -0.19 -0.19 690B 167.44 0.44 -0.02 -0.02 -0.40 -0.03 -0.05 0.89 0.89 -0.11 -0.11 1.43 1.43 -0.27 -0.27 690B 167.44 0.44 -0.02 -0.45 -0.07 690B 167.54 0.36 -0.10 -0.10 -0.34 0.02 0.02 0.83 0.83 -0.07 -0.07 1.66 1.66 -0.23 -0.23 690B 167.64 0.37 -0.09 -0.06 -0.41 -0.04 -0.03 0.83 0.83 -0.11 -0.11 1.53 1.53 -0.90 -0.90 690B 167.64 0.44 -0.02 -0.38 -0.02 690B 167.74 0.39 -0.07 -0.13 -0.41 -0.04 -0.05 0.74 0.74 -0.11 -0.11 1.55 1.55 -0.21 -0.21 690B 167.74 0.31 -0.15 -0.44 -0.06 690B 167.74 0.30 -0.16 -0.43 -0.06 690B 167.84 0.35 -0.11 -0.11 -0.43 -0.06 -0.06 0.78 0.78 -0.13 -0.13 1.65 1.73 -0.44 -0.46 690B 167.84 1.81 -0.48 690B 167.95 0.17 -0.29 -0.29 -0.56 -0.16 -0.16 0.67 0.67 0.23 0.23 1.64 1.64 -0.27 -0.27 690B 168.05 0.33 -0.13 -0.13 -0.26 0.08 0.08 0.50 0.50 -0.17 -0.17 1.65 1.65 -0.48 -0.48 690B 168.14 0.33 -0.13 -0.13 -0.27 0.07 0.07 0.72 0.72 -0.02 -0.02 1.53 1.53 -0.29 -0.29 690B 168.24 0.18 -0.28 -0.28 -0.50 -0.11 -0.11 0.64 0.64 -0.04 -0.04 1.40 1.40 -0.75 -0.75 690B 168.34 0.19 -0.27 -0.27 -0.32 0.03 0.03 0.69 0.69 -0.06 -0.06 1.83 1.83 -0.73 -0.73 690B 168.43 0.20 -0.26 -0.39 -0.55 -0.15 -0.24 0.42 0.42 -0.17 -0.17 1.09 1.09 -0.68 -0.68 690B 168.43 0.01 -0.45 -0.72 -0.28 690B 168.43 0.02 -0.44 -0.72 -0.28 690B 168.53 0.13 -0.33 -0.33 -0.41 -0.04 -0.04 1.43 1.43 -0.53 -0.53 690B 168.65 0.04 -0.42 -0.42 -0.62 -0.21 -0.21 0.38 0.38 -0.09 -0.09 1.16 1.16 -0.38 -0.38 690B 168.77 -0.03 -0.49 -0.49 -0.55 -0.15 -0.15 0.53 0.53 -0.19 -0.19 1.38 1.38 -0.40 -0.40 690B 168.83 0.06 -0.40 -0.53 -0.59 -0.18 -0.24 0.52 0.52 -0.15 -0.15 1.31 1.31 -0.46 -0.46 690B 168.83 -0.05 -0.51 -0.70 -0.27 690B 168.83 -0.20 -0.66 -0.71 -0.28 690B 168.94 -0.06 -0.52 -0.52 -0.44 -0.06 -0.06 0.80 0.80 -0.41 -0.41 1.33 1.33 -0.24 -0.24 2.54 2.54 -1.55 -1.55 690B 169.03 -0.09 -0.55 -0.55 -0.40 -0.03 -0.03 0.68 0.68 -0.20 -0.20 1.49 1.49 -0.60 -0.60 2.43 2.43 -1.85 -1.85 690B 169.13 -0.21 -0.67 -0.64 -0.44 -0.06 -0.08 0.46 0.46 -0.09 -0.09 1.52 1.52 -0.64 -0.64 1.70 1.70 -1.40 -1.40 690B 169.13 -0.16 -0.62 -0.47 -0.09 690B 169.23 -0.32 -0.78 -0.81 -0.62 -0.21 -0.23 0.38 0.38 0.08 0.08 1.23 1.23 -0.85 -0.85 2.59 2.60 -1.54 -1.40 690B 169.23 -0.28 -0.74 -0.62 -0.21 2.29 -0.96 690B 169.23 -0.45 -0.91 -0.72 -0.28 2.91 -1.71 690B 169.33 -0.40 -0.86 -0.89 -0.76 -0.32 -0.33 0.03 0.03 -0.16 -0.16 1.30 1.30 -0.77 -0.77 2.25 2.36 -1.61 -1.64 690B 169.33 -0.44 -0.90 -0.74 -0.30 2.48 -1.67 690B 169.33 -0.46 -0.92 -0.84 -0.38 690B 169.45 -0.16 -0.16 -0.31 -0.31 0.67 0.67 -0.59 -0.59 1.68 1.83 -1.64 -1.64 690B 169.45 1.97 -1.64 690B 169.55 -0.76 -1.22 -1.22 -0.92 -0.44 -0.44 -0.22 -0.22 -0.73 -0.73 0.61 0.61 -0.67 -0.67 2.27 2.27 -1.70 -1.70 4. Table 4, Carbonate Sediment data Column 1: ODP Hole Column 2: Depth, m. Column 3: Weight percent coarse fraction >63um (expressing scarcity of foram shells within carbonate-enriched, CIE recovery interval) Column 4: Percent shell fragments of planktic forams (changes in planktic foraminiferal shell fragmentation.) Column 5: Weight percent CaCO3 Hole Depth Wt%CF %PF Frags Wt%CaCO3 690B 166.90 0.54 25.90 690B 166.94 0.65 34.90 82.16 690B 167.04 0.47 37.30 89.97 690B 167.14 0.75 14.80 84.78 690B 167.24 0.70 18.80 88.47 690B 167.34 0.89 12.90 89.25 690B 167.44 0.85 19.70 91.00 690B 167.54 0.87 14.30 91.95 690B 167.64 0.75 17.10 92.02 690B 167.74 0.74 10.10 92.95 690B 167.84 0.71 14.70 93.45 690B 167.95 0.65 8.30 93.22 690B 168.05 0.68 11.80 92.60 690B 168.14 0.67 7.60 93.54 690B 168.24 0.54 8.10 94.17 690B 168.34 0.55 11.60 90.82 690B 168.43 0.61 9.80 93.64 690B 168.53 0.54 12.60 94.12 690B 168.60 95.38 690B 168.65 0.75 10.40 93.95 690B 168.77 0.76 15.10 690B 168.80 95.7 690B 168.83 1.02 15.00 93.02 690B 168.94 1.05 14.40 90.47 690B 169.00 89.87 690B 169.03 1.14 13.20 88.52 690B 169.13 1.69 86.08 690B 169.13 12.40 690B 169.20 87.08 690B 169.23 1.86 16.50 85.48 690B 169.33 1.70 10.20 80.03 690B 169.40 78.52 690B 169.45 3.13 16.00 79.94 690B 169.55 2.54 14.20 76.12 690B 169.59 73.60 690B 169.70 76.04 690B 169.71 2.75 24.30 81.16 690B 169.80 2.85 25.80 80.09 690B 169.84 4.96 26.30 690B 169.89 76.36 690B 169.91 5.57 20.30 690B 169.96 73.32 690B 170.01 5.01 26.10 690B 170.06 71.41 690B 170.09 7.43 20.00 690B 170.16 74.59 690B 170.19 6.29 17.80 690B 170.26 68.06 690B 170.31 66.53 690B 170.32 9.07 22.30 690B 170.36 67.14 690B 170.41 69.35 690B 170.42 5.71 23.70 690B 170.46 68.09 690B 170.51 2.78 65.3 690B 170.56 1.11 39.30 690B 170.58 64.05 690B 170.60 3.42 690B 170.61 59.56 690B 170.66 72.97 690B 170.69 7.07 10.30 690B 170.71 77.07 690B 170.80 6.89 5.50 690B 170.81 83.94 690B 170.91 6.52 17.90 81.68 690B 171.01 9.35 690B 171.11 6.05 10.70 89.35 690B 171.21 6.39 690B 171.31 5.49 9.20 73.35 690B 171.42 5.96 10.00 690B 171.53 88.43 690B 171.73 86.86