Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon
ABSTRACT The northern lobe of the White River Ash (WRAn) is part of a bilobate distribution of tephras that originated from the Wrangell Volcanic Field near the border of Alaska, USA, and Yukon, Canada. It is distributed across northeastern Alaska and the northwestern portion of the Yukon. The timin...
| Published in: | Radiocarbon |
|---|---|
| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
2019
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| Subjects: | |
| Online Access: | https://doi.org/10.1017/rdc.2019.110 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822219001103 |
| _version_ | 1829941453222051840 |
|---|---|
| author | Reuther, Joshua Potter, Ben Coffman, Sam Smith, Holly Bigelow, Nancy |
| author_facet | Reuther, Joshua Potter, Ben Coffman, Sam Smith, Holly Bigelow, Nancy |
| author_sort | Reuther, Joshua |
| collection | Cambridge University Press |
| container_issue | 1 |
| container_start_page | 169 |
| container_title | Radiocarbon |
| container_volume | 62 |
| description | ABSTRACT The northern lobe of the White River Ash (WRAn) is part of a bilobate distribution of tephras that originated from the Wrangell Volcanic Field near the border of Alaska, USA, and Yukon, Canada. It is distributed across northeastern Alaska and the northwestern portion of the Yukon. The timing of this eruption has seen little critical analysis relative to the younger and more extensive eastern lobe eruption of the White River Ash. We compiled 38 radiocarbon ( 14 C) dates from above and below the WRAn, and employed several statistical approaches to identify and eliminate or down-weight outliers, combine dates, and different Bayesian models, to provide a revised age estimate for the timing of the WRAn tephra deposition. Our results indicate that the most accurate modeled age estimate for the northern lobe of the White River Ash deposition is between 1689 and 1560 cal BP, with a mean and median of 1625 and 1623 cal BP, respectively. This age range is 90 to 200 years younger than previous age estimates. |
| format | Article in Journal/Newspaper |
| genre | Alaska Yukon |
| genre_facet | Alaska Yukon |
| geographic | Yukon Canada |
| geographic_facet | Yukon Canada |
| id | crcambridgeupr:10.1017/rdc.2019.110 |
| institution | Open Polar |
| language | English |
| op_collection_id | crcambridgeupr |
| op_container_end_page | 188 |
| op_doi | https://doi.org/10.1017/rdc.2019.110 |
| op_rights | https://www.cambridge.org/core/terms |
| op_source | Radiocarbon volume 62, issue 1, page 169-188 ISSN 0033-8222 1945-5755 |
| publishDate | 2019 |
| publisher | Cambridge University Press (CUP) |
| record_format | openpolar |
| spelling | crcambridgeupr:10.1017/rdc.2019.110 2025-04-20T14:46:19+00:00 Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon Reuther, Joshua Potter, Ben Coffman, Sam Smith, Holly Bigelow, Nancy 2019 https://doi.org/10.1017/rdc.2019.110 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822219001103 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Radiocarbon volume 62, issue 1, page 169-188 ISSN 0033-8222 1945-5755 journal-article 2019 crcambridgeupr https://doi.org/10.1017/rdc.2019.110 2025-04-08T14:01:25Z ABSTRACT The northern lobe of the White River Ash (WRAn) is part of a bilobate distribution of tephras that originated from the Wrangell Volcanic Field near the border of Alaska, USA, and Yukon, Canada. It is distributed across northeastern Alaska and the northwestern portion of the Yukon. The timing of this eruption has seen little critical analysis relative to the younger and more extensive eastern lobe eruption of the White River Ash. We compiled 38 radiocarbon ( 14 C) dates from above and below the WRAn, and employed several statistical approaches to identify and eliminate or down-weight outliers, combine dates, and different Bayesian models, to provide a revised age estimate for the timing of the WRAn tephra deposition. Our results indicate that the most accurate modeled age estimate for the northern lobe of the White River Ash deposition is between 1689 and 1560 cal BP, with a mean and median of 1625 and 1623 cal BP, respectively. This age range is 90 to 200 years younger than previous age estimates. Article in Journal/Newspaper Alaska Yukon Cambridge University Press Yukon Canada Radiocarbon 62 1 169 188 |
| spellingShingle | Reuther, Joshua Potter, Ben Coffman, Sam Smith, Holly Bigelow, Nancy Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon |
| title | Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon |
| title_full | Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon |
| title_fullStr | Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon |
| title_full_unstemmed | Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon |
| title_short | Revisiting the Timing of the Northern Lobe of the White River Ash Volcanic Event in Eastern Alaska and Western Yukon |
| title_sort | revisiting the timing of the northern lobe of the white river ash volcanic event in eastern alaska and western yukon |
| url | https://doi.org/10.1017/rdc.2019.110 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822219001103 |