Results 11 to 20 of about 1,476 (168)

A Blind Test of the Younger Dryas Impact Hypothesis. [PDF]

open access: yesPLoS ONE, 2016
The Younger Dryas Impact Hypothesis (YDIH) states that North America was devastated by some sort of extraterrestrial event ~12,800 calendar years before present.
Vance Holliday   +2 more
doaj   +5 more sources

Platinum and microspherule peaks as chronostratigraphic markers for onset of the Younger Dryas at Wakulla Springs, Florida [PDF]

open access: yesScientific Reports, 2023
Anomalous peak abundances of platinum and Fe-rich microspherules with high-temperature minerals have previously been demonstrated to be a chronostratigraphic marker for the lower Younger Dryas Boundary (YDB) dating to 12.8 ka.
Christopher R. Moore   +9 more
doaj   +2 more sources

Warm summers during the Younger Dryas cold reversal [PDF]

open access: yesNature Communications, 2018
Mechanisms causing the Younger Dryas cold reversal have been questioned by inconsistencies between proxy and modelling results. Here, the authors show that the concept of a strong North Atlantic Ocean cooling event as major driver is consistent with warm
Frederik Schenk   +9 more
doaj   +2 more sources

Human response to the Younger Dryas along the southern North Sea basin, Northwest Europe [PDF]

open access: yesScientific Reports
Currently in NW Europe little is known about the human response to the extensive cold reversal at the end of the Pleistocene, the Younger Dryas (ca. 12,850 till ca.
Philippe Crombé   +7 more
doaj   +2 more sources

Meltwater routing and the Younger Dryas. [PDF]

open access: yesProc Natl Acad Sci U S A, 2012
The Younger Dryas—the last major cold episode on Earth—is generally considered to have been triggered by a meltwater flood into the North Atlantic. The prevailing hypothesis, proposed by Broecker et al. [1989 Nature 341:318–321] more than two decades ago, suggests that an abrupt rerouting of Lake Agassiz overflow ...
Condron A, Winsor P.
europepmc   +4 more sources

Premature rejection in science: The case of the Younger Dryas Impact Hypothesis [PDF]

open access: yesScience Progress, 2022
The progress of science has sometimes been unjustifiably delayed by the premature rejection of a hypothesis for which substantial evidence existed and which later achieved consensus. Continental drift, meteorite impact cratering, and anthropogenic global
James Lawrence Powell
doaj   +2 more sources

The Younger Dryas age of the Salpausselkä moraines in Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2010
The late-glacial Younger Dryas Stadial, as defined over seventy years ago in Denmark, was compared with the withdrawal of the Scandinavian ice sheet and correlated in Finland in 1951 with the formation of the Salpausselkä moraines.
J. Donner
doaj   +2 more sources

Younger Dryas drought and IPO climate modulation during the Antarctic Cold Reversal in New Zealand [PDF]

open access: yesNature Communications
We present an environmental magnetic record from a 6.1 metre sediment core from Lake Hayes, Te Waipounamu, South Island, New Zealand that spans the last c. 16.5 kyr and contains a logical progression of climate events.
Christian Ohneiser   +4 more
doaj   +2 more sources

Inconsistent impact hypotheses for the Younger Dryas. [PDF]

open access: yesProc Natl Acad Sci U S A, 2012
Israde-Alcantara et al. (1) presented evidence from Lake Cuitzeo sediments and argued that it supports the Younger Dryas (YD) impact hypothesis of Firestone et al. (2) for a major extraterrestrial impact event “involving multiple airburst(s) and/or ground impact(s) at 12.9 ka.” Firestone et al. (2) did not specify the details of the impact but proposed
Boslough M.
europepmc   +4 more sources

Widespread platinum anomaly documented at the Younger Dryas onset in North American sedimentary sequences [PDF]

open access: yesScientific Reports, 2017
Previously, a large platinum (Pt) anomaly was reported in the Greenland ice sheet at the Younger Dryas boundary (YDB) (12,800 Cal B.P.). In order to evaluate its geographic extent, fire-assay and inductively coupled plasma mass spectrometry (FA and ICP ...
Christopher R. Moore   +12 more
doaj   +2 more sources

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