The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada
paper has been peer-reviewed but does not contain final published proof-corrections or journal pagination. Aeolian periglacial sand deposits are common in the Tuktoyaktuk Coastlands of Western Arctic Canada. Regionally extensive and thick aeolian sand-sheet deposits have been observed in two major s...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.507.8985 2023-05-15T15:09:37+02:00 The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada Mark D. Bateman Julian B. Murton The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.8985 http://eprints.whiterose.ac.uk/2258/1/Bateman_and_murton_author_version[1].pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.8985 http://eprints.whiterose.ac.uk/2258/1/Bateman_and_murton_author_version[1].pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://eprints.whiterose.ac.uk/2258/1/Bateman_and_murton_author_version[1].pdf text ftciteseerx 2016-01-08T09:28:05Z paper has been peer-reviewed but does not contain final published proof-corrections or journal pagination. Aeolian periglacial sand deposits are common in the Tuktoyaktuk Coastlands of Western Arctic Canada. Regionally extensive and thick aeolian sand-sheet deposits have been observed in two major stratigraphic settings: within a sand unit characterized by large aeolian dune deposits; and interbedded with glaciofluvial outwash from the Laurentide Ice Sheet (LIS). Small, localized sand sheets have also been observed along the tops of sandy bluffs, within sequences of drained thermokarst lakes deposits and as an involuted veneer above buried basal ice of the LIS. On the basis of radiocarbon and optically stimulated luminescence (OSL) dates from preserved periglacial aeolian sand sheets and dunes a regional chronostratigraphy is presented which indicates that both extensive dunes and sand sheets accumulated mainly between c. 30 and 13 ka. A switch to dominantly sand-sheet aggradation at c. 14–13 ka, with sand sheets forming widely until c. 8 ka, is attributed to (a) surface armouring by glacial deposits associated with the advance of the LIS; and (b) amelioration of the climate from cold aridity. An absence of OSL dates between c. 8 and 1 ka suggests that sand sheets stabilized during much of the Holocene. Local sand-sheet aggradation during recent centuries has occurred near sandy bluffs and on the floors of drained thermokarst lakes. The OSL dates constrain the maximum extent of the LIS in the Tuktoyaktuk Coastlands to Marine Isotope Text Arctic Ice Sheet Thermokarst Unknown Arctic Canada Tuktoyaktuk ENVELOPE(-133.006,-133.006,69.425,69.425) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
paper has been peer-reviewed but does not contain final published proof-corrections or journal pagination. Aeolian periglacial sand deposits are common in the Tuktoyaktuk Coastlands of Western Arctic Canada. Regionally extensive and thick aeolian sand-sheet deposits have been observed in two major stratigraphic settings: within a sand unit characterized by large aeolian dune deposits; and interbedded with glaciofluvial outwash from the Laurentide Ice Sheet (LIS). Small, localized sand sheets have also been observed along the tops of sandy bluffs, within sequences of drained thermokarst lakes deposits and as an involuted veneer above buried basal ice of the LIS. On the basis of radiocarbon and optically stimulated luminescence (OSL) dates from preserved periglacial aeolian sand sheets and dunes a regional chronostratigraphy is presented which indicates that both extensive dunes and sand sheets accumulated mainly between c. 30 and 13 ka. A switch to dominantly sand-sheet aggradation at c. 14–13 ka, with sand sheets forming widely until c. 8 ka, is attributed to (a) surface armouring by glacial deposits associated with the advance of the LIS; and (b) amelioration of the climate from cold aridity. An absence of OSL dates between c. 8 and 1 ka suggests that sand sheets stabilized during much of the Holocene. Local sand-sheet aggradation during recent centuries has occurred near sandy bluffs and on the floors of drained thermokarst lakes. The OSL dates constrain the maximum extent of the LIS in the Tuktoyaktuk Coastlands to Marine Isotope |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Mark D. Bateman Julian B. Murton |
spellingShingle |
Mark D. Bateman Julian B. Murton The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada |
author_facet |
Mark D. Bateman Julian B. Murton |
author_sort |
Mark D. Bateman |
title |
The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada |
title_short |
The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada |
title_full |
The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada |
title_fullStr |
The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada |
title_full_unstemmed |
The Chronostratigraphy of Late Pleistocene Glacial and Periglacial Aeolian Activity in the Tuktoyaktuk Coastlands, NWT, Canada |
title_sort |
chronostratigraphy of late pleistocene glacial and periglacial aeolian activity in the tuktoyaktuk coastlands, nwt, canada |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.8985 http://eprints.whiterose.ac.uk/2258/1/Bateman_and_murton_author_version[1].pdf |
long_lat |
ENVELOPE(-133.006,-133.006,69.425,69.425) |
geographic |
Arctic Canada Tuktoyaktuk |
geographic_facet |
Arctic Canada Tuktoyaktuk |
genre |
Arctic Ice Sheet Thermokarst |
genre_facet |
Arctic Ice Sheet Thermokarst |
op_source |
http://eprints.whiterose.ac.uk/2258/1/Bateman_and_murton_author_version[1].pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.8985 http://eprints.whiterose.ac.uk/2258/1/Bateman_and_murton_author_version[1].pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766340782318419968 |