Using Be-10 dating to determine when the Cordilleran Ice Sheet stopped flowing over the Canadian Rocky Mountains
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10430191" target="_blank" >RIV/00216208:11310/21:10430191 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V-jFtzTtiw" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V-jFtzTtiw</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/qua.2020.122" target="_blank" >10.1017/qua.2020.122</a>
Alternative languages
Result language
angličtina
Original language name
Using Be-10 dating to determine when the Cordilleran Ice Sheet stopped flowing over the Canadian Rocky Mountains
Original language description
During the last glacial maximum the Cordilleran and Laurentide ice sheets coalesced east of the Rocky Mountains and geomorphological evidence indicates ice flowed over the main ridge of the Rocky Mountains between similar to 54-56 degrees N. However, this ice flow has thus far remained unconstrained in time. Here we use in situ produced cosmogenic m Be dating to determine when Cordilleran ice stopped flowing over the mountain range. We dated eight samples from two sites: one on the western side (Mount Morfee) and one on the eastern side (Mount Spieker) of the Rocky Mountains. At Mount Spieker, one sample is rejected as an outlier and the remaining three give an apparent weighted mean exposure age of 15.6 +/- 0.6 ka. The four samples at Mount Morfee are well clustered in time and give an apparent weighted mean exposure age of 12.2 +/- 0.4 ka. These ages indicate that Mount Spieker became ice free before the Bolling warming and that the western front of the Rocky Mountains (Mount Morfee) remained in contact with the Cordilleran Ice Sheet until the Younger Dryas.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10508 - Physical geography
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Quaternary Research
ISSN
0033-5894
e-ISSN
—
Volume of the periodical
102
Issue of the periodical within the volume
July
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
222-233
UT code for WoS article
000675576300017
EID of the result in the Scopus database
2-s2.0-85111063852