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dc.contributor.author
Egli, Markus
dc.contributor.author
Dahms, Dennis
dc.contributor.author
Dumitrescu, Mike
dc.contributor.author
Derakhshan-Babaei, Farzaneh
dc.contributor.author
Christl, Marcus
dc.contributor.author
Tikhomirov, Dmitry
dc.date.accessioned
2020-09-28T11:59:10Z
dc.date.available
2020-09-27T02:47:27Z
dc.date.available
2020-09-28T11:59:10Z
dc.date.issued
2020-12-15
dc.identifier.other
10.1016/j.geomorph.2020.107433
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/442896
dc.identifier.doi
10.3929/ethz-b-000442896
dc.description.abstract
At mid-latitudes, the transition from the Pleistocene to the Holocene was characterised by distinct and partially abrupt climatic changes. Also during the Holocene, climatic perturbations, with sometimes cold-dry conditions, have occurred. How land surfaces and soil development processes in high-mountains respond to these climatic oscillations is so far only poorly known. We traced the responses of surfaces in the alpine settings of the Wind River Range (Wyoming, US) by using a large mire as natural archive. This enabled us to reconstruct environmental conditions and ecosystem changes during the Holocene in this montane area. Although adjacent moraine deposits display 10Be exposure ages from the Last Glacial Maximum up to MIS16 or even older, the accessible sediment deposits covered only the Holocene (via radiocarbon dating). By applying a geoforensic approach and deriving sedimentation rates, major climatic signals were detected. A higher deposition (and consequently erosion) rate and thus a higher rate of geomorphic activity was measured for the known cold periods 9.4–10.2 ka BP, 4.2 ka BP and 2.5 ka BP. During the LIA, especially rapid aggradation of organic matter organic matter took place here. Rates of chemical weathering and soil formation seem to have been relatively low until about 5–6 ka BP but have since increased during the Late Holocene. This would fit previous observations of increasing moisture conditions after the mid-Holocene aridity period. In contrast to several other studies, no clear signs of major disturbances (erosion, weathering) during the 8.2 ka event could be observed. Together with the low levels of chemical weathering found here, we do not see any evidence that the climate was more humid during this period. Compared to previous findings, more humid conditions seemed to have returned earlier, i.e. about 5 kyr BP. In general, this landscape displayed a patchy pattern of reaction to environmental changes, as all events were not recorded in each mire profile.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Erosion
en_US
dc.subject
Climate
en_US
dc.subject
Wind River Mountains
en_US
dc.subject
Landscape evolution
en_US
dc.title
Landscape evolution, post-LGM surface denudation and soil weathering processes from Dickinson Park mire, Wind River Range, Wyoming (USA)
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2020-09-16
ethz.journal.title
Geomorphology
ethz.journal.volume
371
en_US
ethz.pages.start
107433
en_US
ethz.size
14 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::08619 - Labor für Ionenstrahlphysik (LIP) / Laboratory of Ion Beam Physics (LIP)
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::08619 - Labor für Ionenstrahlphysik (LIP) / Laboratory of Ion Beam Physics (LIP)
ethz.date.deposited
2020-09-27T02:47:35Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-09-28T11:59:21Z
ethz.rosetta.lastUpdated
2020-09-28T11:59:21Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Landscape%20evolution,%20post-LGM%20surface%20denudation%20and%20soil%20weathering%20processes%20from%20Dickinson%20Park%20mire,%20Wind%20River%20Range,%20Wyoming%20(USA&rft.jtitle=Geomorphology&rft.date=2020-12-15&rft.volume=371&rft.spage=107433&rft.au=Egli,%20Markus&Dahms,%20Dennis&Dumitrescu,%20Mike&Derakhshan-Babaei,%20Farzaneh&Christl,%20Marcus&rft.genre=article&
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