Results 91 to 100 of about 1,251 (191)

Dynamic landscape changes in Glen Roy and vicinity, west Highland Scotland, during the Younger Dryas and early Holocene:a synthesis [PDF]

open access: yes, 2017
This paper introduces a special issue devoted to the sequence of events in and around Glen Roy during the Loch Lomond or Younger Dryas Stadial, the short but important cold period dated to between 12,900 and 11,700 years ago, during which glaciers last ...
Adrian P. Palmer   +82 more
core   +1 more source

Geochemical analysis of extremely fine-grained cryptotephra: New developments and recommended practices

open access: yesQuaternary Geochronology
Funding: This work was funded by a NERC IAPETUS2 DTP studentship [NE/S007431/1] awarded to H. M. Innes and UKRI Future Leaders Fellowship [MR/S033505/1] awarded to W. Hutchison. A. Burke is supported by a Leverhulme Trust Prize [PLP-2021-167]. The St Andrews EPMA was supported by the EPSRC through grants EP/T019298/1, EP/L017008/1 and EP/R023751/1 ...
Helen M. Innes   +2 more
openaire   +3 more sources

Stratigraphy of a Lateglacial lake basin sediment sequence at Turret Bank, upper Glen Roy, Lochaber: implications for the age of the Turret Fan [PDF]

open access: yes, 2017
New lithostratigraphical, pollen-stratigraphical and tephrostratigraphical data are presented for a sediment sequence at Turret Bank, a site that lies close to the confluence of the River Turret with the River Roy in Lochaber, the western Scottish ...
Carter-Champion, A.   +5 more
core   +2 more sources

Ice core evidence for the Los Chocoyos supereruption disputes millennial-scale climate impact

open access: yesCommunications Earth & Environment
Volcanic supereruptions are considered among the few drivers of global and existential catastrophes, with recent hypotheses suggesting massive volcanic stratospheric sulfate injection could instigate major shifts in global climate.
Helen M. Innes   +15 more
doaj   +1 more source

A summary of terminology used in tephra-related studies [PDF]

open access: yes, 2001
The word ‘tephra’, derived from a Greek word for ash, is a collective term for all the unconsolidated, primary pyroclastic products of a volcanic eruption.
Hunt, John B., Lowe, David J.
core   +1 more source

Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records [PDF]

open access: yes, 2013
Very few age controls exist for Quaternary deposits over the vast territory of the East Russian Arctic, which hampers dating of major environmental changes in this area and prevents their correlation to climatic changes in the Arctic and Pacific marine ...
Derkachev, Alexander   +5 more
core   +1 more source

Volcanic glass from the 1.8 ka Taupō eruption (New Zealand) detected in Antarctic ice at ~ 230 CE. [PDF]

open access: yesSci Rep, 2023
Piva SB   +11 more
europepmc   +1 more source

Maximum grain size record from sediments of a Czech headwater lake reveals precipitation patterns during the Allerød to Younger Dryas transition

open access: yesFrontiers in Environmental Science
This study examines environmental changes recorded in the sediments of Plešné Lake (48°46.6’N, 13°51.9’E, Bohemian Forest, Czech Republic) between 13,200 and 12,200 cal yr BP, encompassing the Allerød-Younger Dryas (AL-YD) transition (∼12,900 years ago).
Gunther Kletetschka   +15 more
doaj   +1 more source

Cryptotephra in the East Antarctic Mount Brown South ice core

open access: yes
Abstract. Ice cores contain stratified layers of impurities scavenged from the atmosphere, which are a vital tool for investigating the Earth system. Reconstructing past eruption records by way of ice core tephrochronology can help us understand ash dispersal, atmospheric circulation processes, and the impacts of volcanic eruptions on climate.
Margaret Mallory Harlan   +5 more
openaire   +2 more sources

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