Elsevier (11 - 17 Mar 2013)
☆Palaeogeography, Palaeoclimatology, Palaeoecology☆
1. A
petrographic and geochemical record of climate change over the last 4600 years
from a northern Namibia stalagmite, with evidence of abruptly wetter climate at
the beginning of southern Africa’s Iron Age
Hillary
R. Sletten, L. Bruce Railsback, Fuyuan Liang, George A. Brook, Eugene Marais,
Benjamin F. Hardt, Hai Cheng, R. Lawrence Edwards
► Stalagmite DP1 provides a detailed
climate record of last 4.6 ka from NE Namibia. ► Variation in δ13C, δ18O, mineralogy, layer-specific width,
& layer-bounding surfaces. ► Combined record indicates pronounced dry
period from 3.3 to 1.8 ka. ► Increase in wetness at 1.8 ka coincides with
beginning of southern African Iron Age. ► Record indicates at least three
wet/dry cycles over last 1.8 ka.
2.
Deglacial–Holocene environmental changes at the Pacific entrance of the Strait
of Magellan
Naomi
Harada, Ulysses Ninnemann, Carina B. Lange, Margarita E. Marchant, Miyako Sato,
Naokazu Ahagon, Silvio Pantoja
► Holocene oceanographic environmental data
around southernmost Patagonia is scarce. We provide new constraints on the
deglacial–Holocene climate changes in this region. Holocene conditions were
regulated with increased influence of Southern Ocean water. Sea surface
temperatures (SST) showed millennial-scale changes during 11–9 kyr BP. ► The
longer-term pattern in SST follows changes in insolation during austral spring.
3.
Millennial climatic instability during penultimate glacial period recorded in a
south-western France speleothem
Karine
Wainer, Dominique Genty, Dominique Blamart, Miryam Bar-Matthews, Yves Quinif,
Valérie Plagnes
► We provide a high resolution record of
earlier MIS6 based on speleothem data. ► The carbon isotopic composition signal
yields 5 stadial-interstadial cycles. ► Intra-interstadial variability is
visible
☆Chemical Geology☆
☆Marine Geology☆
特になし
