1,720,984 research outputs found
Palynological analyses of Eocene to Oligocene sediments from DSDP Site 338, Outer Voring Plateau
No full text(Appendix B) Dinoflagellate cysts occurrence in DSDP Hole 38-33
(Appendix A) Palynofacies absoulte abundances of DSDP Hole 38-338
No full text(Appendix A) Palynofacies absoulte abundances of DSDP Hole 38-33
(Appendix A) Palynofacies raw counts of DSDP Hole 38-338
No full text(Appendix A) Palynofacies raw counts of DSDP Hole 38-33
(Appendix B) Dinoflagellate cysts eco-groups of DSDP Hole 38-338
No full text(Appendix B) Dinoflagellate cysts eco-groups of DSDP Hole 38-33
(Appendix B) Peridinioid/gonyaulacoid ratio of DSDP Hole 38-338
No full text(Appendix B) Peridinioid/gonyaulacoid ratio of DSDP Hole 38-33
(Appendix A) Palynologfacies ratios of DSDP Hole 38-338
No full text(Appendix A) Palynologfacies ratios of DSDP Hole 38-33
Temperature and precipitation reconstruction for the Eocene to Oligocene transition in northern high latitudes
No full textSediment depth is given in mbsf. Calculations for Holes 104-643A and 162-985A corrected for palaeolatitude. 104-643A palaeolatitude (34 Ma) 63.9, gradient 0.4°C/1° latitude, correction -2.3°C. 162-985A palaeolatitude 61.1, gradient 0.4°C/1° latitude, correction -3.4°C. Correction after Lear et al., 2004, doi:10.1029/2004PA001039
Onset of long-term cooling of Greenland near the Eocene-Oligocene boundary as revealed by branched tetraether lipids
No full textThe Eocene-Oligocene (E-O) boundary interval is considered to be one of the major transitions in Earth's climate, witnessing the first major expansion of the East Antarctic Ice Sheet. However, the extent of the associated climatic cooling, especially for high northern latitude continental landmasses, is poorly constrained. In this study we reconstruct the first mean annual air temperature (MAAT) for the Greenland landmass during the late Eocene and early Oligocene by applying a new proxy based on the distribution of branched tetraether lipids derived from soil bacteria preserved in a marine sediment core from the Greenland Basin. The temperature estimates are compared with a composite continental temperature record based on bio-climatic analysis of pollen assemblages. Both proxies reveal comparable late Eocene MAATs of 13–15 °C and a gradual long-term cooling of 3–5 °C starting near the E-O boundary. These data are in agreement with other MAAT reconstructions from northern midlatitude continents and suggest a general cooling of the Northern Hemisphere during the E-O transition
Distribution of dinoflagellate cysts in Eocene-Oligocene sediments of DSDP Hole 38-338
No full text<1 = presen
Absolute abundances of pollen in ODP Hole 104-643A
No full textAbsolute abundances of pollen in ODP Hole 104-643
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