Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA
Arctic Alaska is a ‘suspect’ terrane that encompasses approximately 20% of Alaska, stretching from the southern Brooks Range all the way to the continental shelves of the Chukchi and Beaufort Seas. Although the origin and subsequent travels of this large crustal fragment are debated among geologists...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-07-01
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| Series: | Geoscience Frontiers |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987117300336 |
| _version_ | 1797708754553143296 |
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| author | Justin V. Strauss Carl W. Hoiland Lyle L. Nelson |
| author_facet | Justin V. Strauss Carl W. Hoiland Lyle L. Nelson |
| author_sort | Justin V. Strauss |
| collection | DOAJ |
| description | Arctic Alaska is a ‘suspect’ terrane that encompasses approximately 20% of Alaska, stretching from the southern Brooks Range all the way to the continental shelves of the Chukchi and Beaufort Seas. Although the origin and subsequent travels of this large crustal fragment are debated among geologists, most researchers agree upon its composite nature and exotic origin. To constrain the early geological history of this terrane, we describe a recent expedition to the Doonerak fenster of the central Brooks Range. This area has long been regarded as a key locality for understanding the structural evolution of the Mesozoic–Cenozoic Brooks Range orogen; however, our target was different: a unique sequence of volcanic and siliciclastic rocks (Apoon assemblage) exposed beneath a profound pre-Mississippian unconformity, which we argue is of key importance to understanding the early Paleozoic tectonic history of northern Alaska and the greater Arctic. |
| first_indexed | 2024-03-12T06:26:11Z |
| format | Article |
| id | doaj.art-95cea00864b3445b82838ea8b77f82be |
| institution | Directory Open Access Journal |
| issn | 1674-9871 |
| language | English |
| last_indexed | 2024-03-12T06:26:11Z |
| publishDate | 2017-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoscience Frontiers |
| spelling | doaj.art-95cea00864b3445b82838ea8b77f82be2023-09-03T01:53:37ZengElsevierGeoscience Frontiers1674-98712017-07-018491591810.1016/j.gsf.2017.02.004Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USAJustin V. Strauss0Carl W. Hoiland1Lyle L. Nelson2Department of Earth Sciences, Dartmouth College, HB6105 Fairchild Hall, Hanover, NH 03755, USADepartment of Geological Sciences, Stanford University, 450 Serra Mall, Stanford, CA 94305, USADepartment of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, USAArctic Alaska is a ‘suspect’ terrane that encompasses approximately 20% of Alaska, stretching from the southern Brooks Range all the way to the continental shelves of the Chukchi and Beaufort Seas. Although the origin and subsequent travels of this large crustal fragment are debated among geologists, most researchers agree upon its composite nature and exotic origin. To constrain the early geological history of this terrane, we describe a recent expedition to the Doonerak fenster of the central Brooks Range. This area has long been regarded as a key locality for understanding the structural evolution of the Mesozoic–Cenozoic Brooks Range orogen; however, our target was different: a unique sequence of volcanic and siliciclastic rocks (Apoon assemblage) exposed beneath a profound pre-Mississippian unconformity, which we argue is of key importance to understanding the early Paleozoic tectonic history of northern Alaska and the greater Arctic.http://www.sciencedirect.com/science/article/pii/S1674987117300336Arctic AlaskaDoonerak fensterBrooks RangeApoon assemblage |
| spellingShingle | Justin V. Strauss Carl W. Hoiland Lyle L. Nelson Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA Geoscience Frontiers Arctic Alaska Doonerak fenster Brooks Range Apoon assemblage |
| title | Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA |
| title_full | Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA |
| title_fullStr | Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA |
| title_full_unstemmed | Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA |
| title_short | Field report: Exploring the Doonerak fenster of the central Brooks Range, Alaska, USA |
| title_sort | field report exploring the doonerak fenster of the central brooks range alaska usa |
| topic | Arctic Alaska Doonerak fenster Brooks Range Apoon assemblage |
| url | http://www.sciencedirect.com/science/article/pii/S1674987117300336 |
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