Zobrazeno 1 - 10 of 99 pro vyhledávání: '"Gerald Osborn"'
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Late Holocene glacier and climate fluctuations in the Mackenzie and Selwyn Mountain Ranges, Northwest Canada
Autor: Adam Christopher Hawkins, Brian Menounos, Brent M. Goehring, Gerald Osborn, Ben M. Pelto, Christopher M. Darvill, Joerg M. Schaefer
Over the last century, northwestern Canada experienced some of the highest rates of tropospheric warming globally, which caused glaciers in the region to rapidly retreat. Our study seeks to extend the record of glacier fluctuations and assess climate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::036f885da76e9e6c24c071f38deb6ee6
https://doi.org/10.5194/tc-2023-55
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3
Late Holocene fluctuations of Stoppani Glacier, southernmost Patagonia
Autor: John J. Clague, Gerald Osborn, Brian Menounos, Lyssa Maurer
Publikováno v: Quaternary Research. 95:56-64
Some lateral moraines contain a rich record of Holocene glacial expansion. Previous workers have used such evidence to document glacial fluctuations in western Canada, Alaska, and the U.S. Pacific Northwest, but similar studies in Patagonia are uncom
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e040d2a25c58358f05dff5b2adb15ea5
https://doi.org/10.1017/qua.2019.87
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4
Reconciling the Apparent Absence of a Last Glacial Maximum Alpine Glacial Advance, Yukon Territory, Canada, through Cosmogenic Beryllium-10 and Carbon-14 Measurements
Autor: Brent M. Goehring, Brian Menounos, Gerald Osborn, Adam Hawkins, Brent Ward
We present a new in situ produced cosmogenic beryllium-10 and carbon-14 nuclide chronology from two sets (outer and inner) of alpine glacier moraines from the Grey Hunter massif of southern Yukon Territory, Canada. The chronology potential of moraine
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdd97ce95b488d36b05b715a35a25fdc
https://doi.org/10.5194/gchron-2021-43
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5
Large-Scale Rock Slope Deformation from the Tablelands and Lookout Hills of Western Newfoundland, Canada
Autor: Ian Spooner, Gerald Osborn, John C. Gosse, Ian A. Brookes, Antony R. Berger, Dewey W. Dunnington
Publikováno v: World Geomorphological Landscapes ISBN: 9783030351359
Five large gravitational slope deformation features (GSDFs) in the Lookout Mountain-Tablelands region of western Newfoundland exemplify bedrock slope instabilities in eastern Canada. The Lookout Hills GSDF (8.3 km3) on Bonne Bay (glacial trough) may
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02fdd8aca31b4a45000e38e3aacaf0d1
https://doi.org/10.1007/978-3-030-35137-3_16
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6
Tandem dating methods constrain late Holocene glacier advances, southern Coast Mountains, British Columbia
Autor: Brian Menounos, Gerald Osborn, John J. Clague, Adam C. Hawkins, Britta J.L. Jensen, Brent M. Goehring
Publikováno v: Quaternary Science Reviews. 274:107282
Combined use of radiocarbon-dated subfossil wood within lateral moraines and surface exposure ages on moraine boulders provides an approach to better constrain times of glacier advance and onset of retreat. We test this method at Gilbert Glacier in t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f93d81ab8a5c6dfbd5f2469d3f69d92
https://doi.org/10.1016/j.quascirev.2021.107282
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7
Postglacial environments in the southern coast of Lago Fagnano, central Tierra del Fuego, Argentina, based on pollen and fungal microfossils analyses
Autor: Andrea Coronato, Lorena Laura Musotto, Gerald Osborn, Ana Maria Borromei, Brian Menounos, Maria Virginia Bianchinotti, Robert A. Marr
Publikováno v: Review of Palaeobotany and Palynology. 238:43-54
We analyzed a peat-bog sequence from the central region of Tierra del Fuego, southernmost Patagonia, to reconstruct the environmental changes over the past 15,000 years. Postglacial vegetation was mainly composed by grasslands and shrubby communities
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f93c3eacede4669d4e9809f72dc03623
https://doi.org/10.1016/j.revpalbo.2016.11.016
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9
Geochemical characterization and dating of R tephra, a postglacial marker bed in Mount Rainier National Park, Washington, USA
Autor: Mary A. Samolczyk, Gerald Osborn, J. F. Cubley, Douglas H. Clark, James W. Vallance
Publikováno v: Canadian Journal of Earth Sciences. 53:202-217
The oldest postglacial lapilli–ash tephra recognized in sedimentary records surrounding Mount Rainier (Washington State, USA) is R tephra, a very early Holocene deposit that acts as an important stratigraphic and geochronologic marker bed. This mul
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dbf6551d46c705e9586f5ddcdbef6952
https://doi.org/10.1139/cjes-2015-0115
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10
The Holocene history of the Columbia Icefield, Canada
Autor: B.J.R. Sperling, Brian H. Luckman, Gerald Osborn
Publikováno v: Quaternary Science Reviews. 242:106436
The Columbia Icefield is the largest icefield in the Canadian Rockies and feeds eight major glaciers that drain to three different oceans. Previous glacier studies have focused on Athabasca and Saskatchewan Glaciers, primarily due to their easy acces
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6c106fb020bfe696ebea6947aa77dce4
https://doi.org/10.1016/j.quascirev.2020.106436
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