The late Pleistocene – Holocene paleoclimate reconstruction in the Adamawa plateau (Central Cameroon) inferred from the geochemistry and mineralogy of the Lake Fonjak sediments

2019 ◽  
Vol 150 ◽  
pp. 23-36 ◽  
Author(s):  
N'nanga Alexandrine ◽  
Ngos Simon ◽  
Ngueutchoua Gabriel
Keyword(s):  
Late Pleistocene ◽  
Paleoclimate Reconstruction ◽  
Holocene Paleoclimate ◽  
Plateau Central

A late Holocene paleoclimate reconstruction from Boqueirão Lake sediments, northeastern Brazil

2014 ◽  
Vol 415 ◽  
pp. 117-126 ◽  
Author(s):  
João Cláudio Cerqueira Viana ◽  
Abdelfettah Sifeddine ◽  
Bruno Turcq ◽  
Ana Luiza Spadano Albuquerque ◽  
Luciane Silva Moreira ◽  
...  
Keyword(s):  
Lake Sediments ◽  
Late Holocene ◽  
Northeastern Brazil ◽  
Paleoclimate Reconstruction ◽  
Holocene Paleoclimate ◽  
Late Holocene Paleoclimate

Late Pleistocene and Holocene ice-wedge activity on the Blackstone Plateau, central Yukon, Canada

2018 ◽  
Vol 91 (1) ◽  
pp. 179-193 ◽  
Author(s):  
Mike Grinter ◽  
Denis Lacelle ◽  
Natalia Baranova ◽  
Sarah Murseli ◽  
Ian D. Clark
Keyword(s):  
Isotopic Composition ◽  
Last Glacial Maximum ◽  
Late Pleistocene ◽  
Environmental Conditions ◽  
Moisture Source ◽  
Ice Wedge ◽  
Western Arctic ◽  
Plateau Central ◽  
The Last Glacial Maximum ◽  
The Last Glacial

AbstractIce-wedge activity can be used to reconstruct past environmental conditions. We investigated the moisture source and timing of ice-wedge formation on the Blackstone Plateau. A section of permafrost exposed ice wedges that developed at two distinct depths: the first set formed syngenetically and penetrated alluvial silts from the top of permafrost; the second set, truncated by an erosional or thaw contact, was found solely in icy muddy gravels (>3.1 m depth). The δ18O and D-excess records of the ice wedges suggest that they formed from freezing of snow meltwater whose isotopic composition evolved during meltout. The14CDOCresults suggest that climate was favorable to ice-wedge growth between 32,000–30,000 and 14,000–12,500 cal yr BP, but there was likely a hiatus during the last glacial maximum due to climate being too dry. During the early to mid-Holocene, ice wedges were inactive as a result of warmer and wetter climate. Ice wedge re-initiated around 6360 cal yr BP, with a peak in activity between 3980 and 920 cal yr BP, a period characterized by cool and moist climate. Overall, timing of ice-wedge activity was broadly consistent with the climate and vegetation evolution in the western Arctic.

A LATE HOLOCENE PALEOCLIMATE RECONSTRUCTION FROM PUERTO RICO BASED ON A CAVE SPELEOTHEM

2016 ◽  
Author(s):  
Heather Roman-Stork ◽  
◽  
Jeremy D. Shakun ◽  
Stephen J. Burns ◽  
Hai Cheng ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Late Holocene ◽  
Paleoclimate Reconstruction ◽  
Holocene Paleoclimate ◽  
Late Holocene Paleoclimate
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