Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska
Rates of northern Alaska Range thrust system deformation are poorly constrained. Shortening at the system's west end is focused on the Kantishna Hills anticline. Where the McKinley River cuts across the anticline, the landscape records both Late Pleistocene deformation and climatic change. New...
Published in: | Geophysical Research Letters |
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ftunivermont:oai:scholarworks.uvm.edu:casfac-1014 2023-07-02T03:29:29+02:00 Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska Bender, A. M. Lease, R. O. Haeussler, P. J. Rittenour, T. Corbett, L. B. Bierman, P. R. Caffee, M. W. 2019-03-28T07:00:00Z application/pdf https://scholarworks.uvm.edu/casfac/13 https://doi.org/10.1029/2018GL081509 https://scholarworks.uvm.edu/context/casfac/article/1014/viewcontent/BiermanPace.pdf unknown UVM ScholarWorks https://scholarworks.uvm.edu/casfac/13 doi:10.1029/2018GL081509 https://scholarworks.uvm.edu/context/casfac/article/1014/viewcontent/BiermanPace.pdf ©2019. American Geophysical Union. All Rights Reserved. College of Arts and Sciences Faculty Publications Alaska bedrock river incision continental neotectonics cosmogenic nuclide dating luminescence dating tectonic geomorphology Climate Solutions Climate text 2019 ftunivermont https://doi.org/10.1029/2018GL081509 2023-06-13T18:32:33Z Rates of northern Alaska Range thrust system deformation are poorly constrained. Shortening at the system's west end is focused on the Kantishna Hills anticline. Where the McKinley River cuts across the anticline, the landscape records both Late Pleistocene deformation and climatic change. New optically stimulated luminescence and cosmogenic 10Be depth profile dates of three McKinley River terrace levels (~22, ~18, and ~14–9 ka) match independently determined ages of local glacial maxima, consistent with climate-driven terrace formation. Terrace ages quantify rates of differential bedrock incision, uplift, and shortening based on fault depth inferred from microseismicity. Differential rock uplift and incision (≤1.4 m/kyr) drive significant channel width narrowing in response to ongoing folding at a shortening rate of ~1.2 m/kyr. Our results constrain northern Alaska Range thrust system deformation rates, and elucidate superimposed landscape responses to Late Pleistocene climate change and active folding with broad geomorphic implications. Text alaska range Alaska The University of Vermont: ScholarWorks @ UVM McKinley River ENVELOPE(-102.385,-102.385,65.601,65.601) Geophysical Research Letters 46 6 3235 3244 |
institution |
Open Polar |
collection |
The University of Vermont: ScholarWorks @ UVM |
op_collection_id |
ftunivermont |
language |
unknown |
topic |
Alaska bedrock river incision continental neotectonics cosmogenic nuclide dating luminescence dating tectonic geomorphology Climate Solutions Climate |
spellingShingle |
Alaska bedrock river incision continental neotectonics cosmogenic nuclide dating luminescence dating tectonic geomorphology Climate Solutions Climate Bender, A. M. Lease, R. O. Haeussler, P. J. Rittenour, T. Corbett, L. B. Bierman, P. R. Caffee, M. W. Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska |
topic_facet |
Alaska bedrock river incision continental neotectonics cosmogenic nuclide dating luminescence dating tectonic geomorphology Climate Solutions Climate |
description |
Rates of northern Alaska Range thrust system deformation are poorly constrained. Shortening at the system's west end is focused on the Kantishna Hills anticline. Where the McKinley River cuts across the anticline, the landscape records both Late Pleistocene deformation and climatic change. New optically stimulated luminescence and cosmogenic 10Be depth profile dates of three McKinley River terrace levels (~22, ~18, and ~14–9 ka) match independently determined ages of local glacial maxima, consistent with climate-driven terrace formation. Terrace ages quantify rates of differential bedrock incision, uplift, and shortening based on fault depth inferred from microseismicity. Differential rock uplift and incision (≤1.4 m/kyr) drive significant channel width narrowing in response to ongoing folding at a shortening rate of ~1.2 m/kyr. Our results constrain northern Alaska Range thrust system deformation rates, and elucidate superimposed landscape responses to Late Pleistocene climate change and active folding with broad geomorphic implications. |
format |
Text |
author |
Bender, A. M. Lease, R. O. Haeussler, P. J. Rittenour, T. Corbett, L. B. Bierman, P. R. Caffee, M. W. |
author_facet |
Bender, A. M. Lease, R. O. Haeussler, P. J. Rittenour, T. Corbett, L. B. Bierman, P. R. Caffee, M. W. |
author_sort |
Bender, A. M. |
title |
Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska |
title_short |
Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska |
title_full |
Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska |
title_fullStr |
Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska |
title_full_unstemmed |
Pace and Process of Active Folding and Fluvial Incision Across the Kantishna Hills Anticline, Central Alaska |
title_sort |
pace and process of active folding and fluvial incision across the kantishna hills anticline, central alaska |
publisher |
UVM ScholarWorks |
publishDate |
2019 |
url |
https://scholarworks.uvm.edu/casfac/13 https://doi.org/10.1029/2018GL081509 https://scholarworks.uvm.edu/context/casfac/article/1014/viewcontent/BiermanPace.pdf |
long_lat |
ENVELOPE(-102.385,-102.385,65.601,65.601) |
geographic |
McKinley River |
geographic_facet |
McKinley River |
genre |
alaska range Alaska |
genre_facet |
alaska range Alaska |
op_source |
College of Arts and Sciences Faculty Publications |
op_relation |
https://scholarworks.uvm.edu/casfac/13 doi:10.1029/2018GL081509 https://scholarworks.uvm.edu/context/casfac/article/1014/viewcontent/BiermanPace.pdf |
op_rights |
©2019. American Geophysical Union. All Rights Reserved. |
op_doi |
https://doi.org/10.1029/2018GL081509 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
6 |
container_start_page |
3235 |
op_container_end_page |
3244 |
_version_ |
1770274630325501952 |