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Datasets of project "Ocean Drilling Program"

Mostrando recursos 1 - 20 de 78.321

  1. Authigenic uranium, mass accumulation rates, benthic d13C and SST reconstruction for ODP Site 177-1094

    Hayes, Christoper T; Martinez-Garcia, Alfredo; Hasenfratz, Albin; Jaccard, Samuel L; Hodell, David A; Sigman, Daniel M; Haug, Gerald H; Anderson, Robert F

  2. Authigenic uranium, mass accumulation rates, benthic d13C and SST reconstruction for ODP Site 177-1094

    Hayes, Christoper T; Martinez-Garcia, Alfredo; Hasenfratz, Albin; Jaccard, Samuel L; Hodell, David A; Sigman, Daniel M; Haug, Gerald H; Anderson, Robert F

  3. Authigenic uranium, mass accumulation rates, benthic d13C and SST during the last interglacial period of ODP Site 177-1094

    Hayes, Christoper T; Martinez-Garcia, Alfredo; Hasenfratz, Albin; Jaccard, Samuel L; Hodell, David A; Sigman, Daniel M; Haug, Gerald H; Anderson, Robert F
    Southern Ocean sediments reveal a spike in authigenic uranium 127,000 years ago, within the last interglacial, reflecting decreased oxygenation of deep water by Antarctic Bottom Water (AABW). Unlike ice age reductions in AABW, the interglacial stagnation event appears decoupled from open ocean conditions and may have resulted from coastal freshening due to mass loss from the Antarctic ice sheet. AABW reduction coincided with increased North Atlantic Deep Water (NADW) formation, and the subsequent reinvigoration in AABW coincided with reduced NADW formation. Thus, alternation of deep water formation between the Antarctic and the North Atlantic, believed to characterize ice ages, apparently...

  4. Authigenic uranium, mass accumulation rates, benthic d13C and SST during the last interglacial period of ODP Site 177-1094

    Hayes, Christoper T; Martinez-Garcia, Alfredo; Hasenfratz, Albin; Jaccard, Samuel L; Hodell, David A; Sigman, Daniel M; Haug, Gerald H; Anderson, Robert F
    Southern Ocean sediments reveal a spike in authigenic uranium 127,000 years ago, within the last interglacial, reflecting decreased oxygenation of deep water by Antarctic Bottom Water (AABW). Unlike ice age reductions in AABW, the interglacial stagnation event appears decoupled from open ocean conditions and may have resulted from coastal freshening due to mass loss from the Antarctic ice sheet. AABW reduction coincided with increased North Atlantic Deep Water (NADW) formation, and the subsequent reinvigoration in AABW coincided with reduced NADW formation. Thus, alternation of deep water formation between the Antarctic and the North Atlantic, believed to characterize ice ages, apparently...

  5. Age model for the period spanning 140-118 ka of ODP Site 177-1094

    Hayes, Christoper T; Martinez-Garcia, Alfredo; Hasenfratz, Albin; Jaccard, Samuel L; Hodell, David A; Sigman, Daniel M; Haug, Gerald H; Anderson, Robert F

  6. Age model for the period spanning 140-118 ka of ODP Site 177-1094

    Hayes, Christoper T; Martinez-Garcia, Alfredo; Hasenfratz, Albin; Jaccard, Samuel L; Hodell, David A; Sigman, Daniel M; Haug, Gerald H; Anderson, Robert F

  7. Age determination of sediments and biomarkers of ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S
    The radiocarbon contents of various biomarkers extracted from the varve-counted sediments of Saanich Inlet, Canada, were determined to assess their applicability for dating purposes. Calibrated ages obtained from the marine planktonic archaeal biomarker crenarchaeol compared favorably with varve-count ages. The same conclusion could be drawn for a more general archaeal biomarker (GDGT-0), although this biomarker proved to be less reliable due to its less-specific origin. The results also lend support to earlier indications that marine crenarchaeota use dissolved inorganic carbon (DIC) as their carbon source. The average reservoir age offset DR of 430 years, determined using the crenarchaeol radiocarbon ages,...

  8. Age determination of sediments and biomarkers of ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S
    The radiocarbon contents of various biomarkers extracted from the varve-counted sediments of Saanich Inlet, Canada, were determined to assess their applicability for dating purposes. Calibrated ages obtained from the marine planktonic archaeal biomarker crenarchaeol compared favorably with varve-count ages. The same conclusion could be drawn for a more general archaeal biomarker (GDGT-0), although this biomarker proved to be less reliable due to its less-specific origin. The results also lend support to earlier indications that marine crenarchaeota use dissolved inorganic carbon (DIC) as their carbon source. The average reservoir age offset DR of 430 years, determined using the crenarchaeol radiocarbon ages,...

  9. (Table 4a) Calibrated age ranges obtained with the atmospheric calibration curve, of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  10. (Table 4a) Calibrated age ranges obtained with the atmospheric calibration curve, of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  11. (Table 5) Reservoir ages in 14C years BP and reservoir age offsets DR for ODP Hole 169-1034C samples

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  12. (Table 5) Reservoir ages in 14C years BP and reservoir age offsets DR for ODP Hole 169-1034C samples

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  13. (Table 4b) Calibrated age ranges obtained with the marine calibration curve, of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  14. (Table 4b) Calibrated age ranges obtained with the marine calibration curve, of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  15. (Table 3) Radiocarbon contents and d13C values of DIC presented at the ODP Hole 169-1034C position

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  16. (Table 3) Radiocarbon contents and d13C values of DIC presented at the ODP Hole 169-1034C position

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  17. (Table 2) Amounts, stable and radiocarbon isotopic compositions of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  18. (Table 2) Amounts, stable and radiocarbon isotopic compositions of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  19. (Table 3) Initial radiocarbon contents and conventional radiocarbon ages of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

  20. (Table 3) Initial radiocarbon contents and conventional radiocarbon ages of sedimentary total organic carbon, terrestrial macrofossils, and isolated biomarkers originating from differently aged sediment layers, ODP Hole 169-1034C

    Smittenberg, Rienk H; Hopmans, Ellen C; Schouten, Stefan; Hayes, John M; Eglinton, Timothy I; Sinninghe Damsté, Jaap S

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