Browsing by Subject "Paleoclimate"

Now showing items 1-4 of 4

    • An Oligocene microthermal forest dominated by Nothofagus in Sierra Baguales, Chilean Patagonia: Response ... 
      Gutiérrez, Néstor M.; Pino, Juan Pablo; Le Roux, Jacobus; Pedroza, Viviana; Oyarzun, José Luis; Hinojosa, Luis Felipe (Elsevier B.V., 2019)
      A large fossil leaf assemblage (>3700 specimens)is reported from the Oligocene Río Leona Formation in the Sierra Baguales of Chilean Patagonia. The association comprises 29 species but is dominated by Nothofagus genera, ...
    • Dust fluxes and iron fertilization in Holocene and Last Glacial Maximum climates 
      Lambert, Fabrice; Tagliabue, Alessandro; Shaffer, Gary; Lamy, Frank; Winckler, Gisela; Farías, Laura; Gallardo Klenner, Laura; De Pol-Holz, Ricardo (Amer Geophysical Union, 2015)
      Mineral dust aerosols play a major role in present and past climates. To date, we rely on climate models for estimates of dust fluxes to calculate the impact of airborne micronutrients on biogeochemical cycles. Here we ...
    • Holocene glacier behavior around the northern Antarctic Peninsula and possible causes 
      Kaplan, M. R.; Strelin, J. A.; Schaefer, J. M.; Peltier, C.; Martini, M. A.; Flores, E.; Winckler, G.; Schwartz, R. (Elsevier, 2020)
      We obtained 49 new Be-10 ages that document the activity of the former Northern Antarctic Peninsula Ice Sheet, and subsequently the James Ross Island Ice Cap and nearby glaciers, from the end of the last glacial period ...
    • Holocene history of río tranquilo glacier, monte San Lorenzo (47°S), Central Patagonia 
      Sagredo, Esteban A.; Reynhout, Scott Andrew; Kaplan, Michael R.; Aravena, Juan C.; Araya, Paola S.; Luckman, Brian H.; Schwartz, Roseanne; Schaefer, Joerg M. (Frontiers Media, 2021)
      The causes underlying Holocene glacier fluctuations remain elusive, despite decades of research efforts. Cosmogenic nuclide dating has allowed systematic study and thus improved knowledge of glacier-climate dynamics ...