Results 41 to 50 of about 16,487 (268)

Glacial chronology of the Sierra Nevada, California, from the Last Glacial Maximum to the Holocene

Cuadernos de Investigación Geográfica, 2017
During the Last Glacial Maximum the Sierra Nevada in California, USA, supported a mountain glacier/ice cap complex that covered over 20,000 km2. The history of this ice cover can be reconstructed using 14C and cosmogenic-nuclide surface-exposure dating ...
F. Phillips
doaj   +1 more source

Timing of the deglaciation and the late-glacial vegetation development on the Pandivere Upland, North Estonia [PDF]

Bulletin of the Geological Society of Finland, 2016
In this study, the deglaciation chronology of the Pandivere Upland is defined, and the late-glacial vegetation trends of north-eastern Estonia are summarised.
L. Amon, L. Saarse, J. Vassiljev, A. Heinsalu, S. Veski   +4 more
doaj   +1 more source

Abrupt Bølling‐Allerød Warming Simulated under Gradual Forcing of the Last Deglaciation

Geophysical Research Letters, 2019
During the last deglaciation, a major global warming trend was punctuated by abrupt climate changes, likely related to Atlantic meridional overturning circulation (AMOC).
T. Obase, A. Abe‐Ouchi
semanticscholar   +1 more source

The last deglaciation of Peru and Bolivia

Cuadernos de Investigación Geográfica, 2017
The tropical Andes of Peru and Bolivia are important for preserving geomorphic evidence of multiple glaciations, allowing for refinements of chronology to aid in understanding climate dynamics at a key location between hemispheres. This review focuses on
B. Mark, N. Stansell, G. Zeballos
doaj   +1 more source

Deglaciation of the Pacific coastal corridor directly preceded the human colonization of the Americas

Science Advances, 2018
Dating of rock surfaces and cave bones suggests the North Pacific coast was a viable path for human migration to the Americas. The route and timing of early human migration to the Americas have been a contentious topic for decades.
A. Lesnek, J. Briner, C. Lindqvist, J. Baichtal, T. Heaton   +4 more
semanticscholar   +1 more source

Climate bifurcation during the last deglaciation [PDF]

Climate of the Past, 2012
Abstract. The last deglaciation was characterised by two abrupt warming events, at the start of the Bølling-Allerød and at the end of the Younger Dryas, but their underlying causes are unclear. Some abrupt climate changes may involve gradual forcing past a bifurcation point, in which a prevailing climate state loses its stability and the climate tips ...
Lenton, T. M.; Livina, V. N.; Dakos, V. ;Scheffer, M.   +4 more
openaire   +4 more sources

Vegetation Succession Patterns at Sperry Glacier’s Foreland, Glacier National Park, MT, USA

Land
Plant colonization patterns on deglaciated terrain give insight into the factors influencing alpine ecosystem development. Our objectives were to use a chronosequence, extending from the Little Ice Age (~1850) terminal moraine to the present glacier ...
Ami Bryant, Lynn M. Resler, Dianna Gielstra, Thomas Pingel   +3 more
doaj   +1 more source

Deglacial temperature history of West Antarctica [PDF]

Proceedings of the National Academy of Sciences, 2016
SignificanceThe magnitude and timing of Antarctic temperature change through the last deglaciation reveal key aspects of Earth’s climate system. Prior attempts to reconstruct this history relied on isotopic indicators without absolute calibration. To overcome this limitation, we combined isotopic data with measurements of in situ temperatures along a 3.
Kurt M. Cuffey, Gary D. Clow, Eric J. Steig, Christo Buizert, T. J. Fudge, Michelle Koutnik, Edwin D. Waddington, Richard B. Alley, Jeffrey P. Severinghaus   +8 more
openaire   +5 more sources

The morphosedimentary record of glacial to postglacial environmental changes in West Wiyâshâkimî impact crater lake and adjacent areas, northern Québec, Canada

Boreas, EarlyView.
Crater lakes in core regions of former ice sheets have the potential to preserve long‐term sedimentary archives that are otherwise rare in glaciated landscapes due to pervasive glacial erosion. Lake Wiyâshâkimî, an impact crater lake located in the inner core of the Québec‐Labrador Dome of the Laurentide Ice Sheet, provides a rare example of such a ...
Etienne Brouard, Patrick Lajeunesse
wiley   +1 more source

Luminescence analysis of a postglacial landscape in northeastern Norway and northern Finland

Boreas, EarlyView.
Portable optically stimulated luminescence (pOSL) analysis allows rapid relative dating of sediments that potentially can be calibrated against known OSL ages to provide an age estimate for landforms across a large area. This study uses 186 pOSL measurements and 20 OSL ages to investigate the postglacial landscape evolution inside the Younger Dryas ...
Alastair Goodship, Helena Alexanderson, Joanna Anjar   +2 more
wiley   +1 more source