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doi:10.2204/iodp.proc.342.101.2014

Abstract

• Background and objectives: Newfoundland sediment drifts
• Geological record of abrupt climate dynamics as future-Earth analogs
• History of the Deep Western Boundary Current
• Astronomical calibration of chronostratigraphic markers and the geological timescale
• Drilling strategy
• The Newfoundland ridges
• Background and objectives: MDHDS sea trials
• Why the MDHDS?
• Principal results: Newfoundland sediment drifts
• Paleogene drift sedimentation in the northwest Atlantic Ocean
• Acoustic units of the Newfoundland ridges
• Lithostratigraphic summary
• Interstitial water geochemistry
• Paleoproductivity indicators
• Paleogene and Cretaceous organic matter
• Exceptional preservation in drift clay-rich sediment
• Biochronology
• Magnetochronology and paleolatitudes
• Astrochronology and calibration of the Cenozoic timescale
• Sedimentation rates
• Paleogene and Cretaceous carbonate compensation depth in the northwest Atlantic
• Onset and development of Cenozoic glaciation
• Oligocene–Miocene transition
• Eocene–Oligocene transition
• Middle Eocene climatic optimum and carbonate accumulation events
• Early to middle Eocene transition
• Paleocene/Eocene Thermal Maximum
• Paleocene and Danian–Selandian transition
• Cretaceous/Paleogene boundary
• Late Cretaceous sedimentation
• Ocean Anoxic Event 2
• Albian reef and beginning of pelagic sedimentation
• Principal results: MDHDS sea trials
• Site summaries
• Site U1402
• Site U1403
• Site U1404
• Site U1405
• Site U1406
• Site U1407
• Site U1408
• Site U1409
• Site U1410
• Site U1411
• Preliminary scientific assessment: Newfoundland sediment drifts
• Summary of expedition objectives
• North Atlantic history of carbonate compensation depth change
• North Atlantic history of ocean structure and sediment drift formation
• High-resolution records of climate from rapidly accumulating sediment drifts
• Exceptional preservation of calcareous microfossils in sediment drifts
• Paleogene and Cretaceous hyperthermal and hypoxic events
• Stability of Cenozoic ice sheets and early northern hemisphere glaciation
• Astrochronology and calibration of the Cenozoic timescale
• Preliminary scientific assessment: MDHDS sea trials
• References
• Figures
• F1. Seismic KNR179-1 Line 7.
• F2. Subsidence evidence.
• F3. Eocene–O1777ligocene transition record.
• F4. Southeast Newfoundland and J-Anomaly Ridges.
• F5. Carbon isotope data.
• F6. Seismic and sedimentary stratigraphy.
• F7. Operational area.
• F8. Newfoundland ridges track map.
• F9. Seismic KNR179-1 Line 20.
• F10. Interpreted seismic records.
• F11. J-Anomaly Ridge bathymetry.
• F12. Southeast Newfoundland Ridge bathymetry.
• F13. Past penetrometer deployments.
• F14. MDHDS deployment stages.
• F15. Drill site bathymetry.
• F16. Site U1403–U1406 locations.
• F17. Drift sedimentation history.
• F18. Lithostratigraphy.
• F19. Magnetic susceptibility records.
• F20. Bulk density records.
• F21. NGR records.
• F22. Color reflectance records.
• F23. Biotic lithologic components, Site U1403–U1406.
• F24. Biotic lithologic components, Site U1407–U1411.
• F25. Sand-sized lithic grains.
• F26. Representative lithologies.
• F27. Vitric volcanic ash bed.
• F28. Interstitial water components.
• F29. Carbon profiles, Sites U1403–U1406.
• F30. Interstitial water Ca, Mg, and Sr profiles.
• F31. Organic matter consumption profiles.
• F32. Sediment Ca, Mg, and Sr profiles.
• F33. High-productivity indicator distribution.
• F34. Benthic foraminifer assemblage distribution.
• F35. Carbon profiles, Sites U1407–U1410.
• F36. Exceptionally well preserved microfossils.
• F37. Exceptionally well preserved nannofossils.
• F38. Microfossil abundance distribution, J-Anomaly Ridge.
• F39. Microfossil abundance distribution, Southeast Newfoundland Ridge.
• F40. Stratigraphic summaries, Sites U1403–U1406.
• F41. Stratigraphic summaries, Sites U1407–U1411.
• F42. Standard calcareous nannofossils.
• F43. Inclination, Sites U1403–U1406.
• F44. Magnetization intensity, Sites U1403–U1406.
• F45. Inclination, Sites U1407–U1411.
• F46. Magnetization intensity, Sites U1407–U1411.
• F47. Plate kinematic reconstructions.
• F48. Color reflectance variations.
• F49. Carbonate content changes.
• F50. Color reflectance and carbonate content variations.
• F51. Middle Eocene cyclicity.
• F52. Magnetic susceptibility and carbonate content variations.
• F53. Age-depth models.
• F54. Paleogene sequences mass accumulation rate.
• F55. Oligocene–Miocene sequences mass accumulation rate.
• F56. Paleocene–Eocene sequences mass accumulation rate.
• F57. Lines of subsidence mass accumulation rate.
• F58. Nannofossil and foraminifer presence, Sites U1404–U1406.
• F59. Nannofossil and foraminifer presence, Site U1405.
• F60. Lithologic expression of Eocene–Oligocene transition.
• F61. Middle Eocene Climatic Optimum.
• F62. Magnetic susceptibility and calcium carbonate records.
• F63. Core image and magnetic susceptibility comparison.
• F64. Lithologic expression of Paleocene/Eocene boundary.
• F65. Paleocene lithostratigraphy, global events, and isotope records.
• F66. Cretaceous/Paleogene boundary.
• F67. Cretaceous/Paleogene boundary.
• F68. Core images and stratigraphic logs.
• F69. OAE 2 black shale horizons.
• F70. OAE 2 characteristic lithologies.
• F71. Shallow-marine carbonate sediment.
• F72. MDHDS Deployment 2.
• F73. T2P in situ pore pressure predictions.
• Tables
• T1. Lithostratigraphic units.
• T2. Coring summary.

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