Geologic history of the Chukchi Borderland, Arctic Ocean
Abstract/Contents
- Abstract
- The Amerasia Basin in the Arctic Ocean is one of the least understood tectonic systems on Earth and radically different ideas have been proposed to explain the tectonic development and geologic nature of its intrabasinal ridges. Recently, a push for data collection by Arctic nations for Extended Continental Shelf (ECS) claims under the United Nations Convention for the Law of the Sea treaty has added greatly to the amount of information available about this poorly understood region. Over 380,000 km2 of multibeam bathymetric data were collected between 2003-2012 as part of the Unite States' ECS project as well as 17 dredges, most of which sampled rocks from submarine outcrops within the central Amerasia Basin. Joint operations with the U.S. and Canada resulted in over 15,000 linear km of multichannel seismic reflection data. In order to answer first order questions as to the nature of the bathymetric features within the Amerasia Basin, and their relationship to the surrounding margins, we report on dredged rock samples from the Chukchi Borderland and suggest that this important bathymetric feature is related to Paleozoic mountain belts of the northern Laurentian margin. The multibeam bathymetric dataset and regional muilti-channel seismic transect also documented in this study, are the basis for development of a chronology of sedimentation, deformation, and volcanism that link the geologic history of the poorly known bathymetric features within the Amerasia Basin. Together these data and geologic samples challenge long held ideas about the tectonic history of the Chukchi Borderland and provide constraint for tectonic reconstruction models.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2014 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Brumley, Kelley | |
|---|---|---|
| Associated with | Stanford University, Department of Geological and Environmental Sciences. | |
| Primary advisor | Graham, S. A. (Stephan Alan), 1950- | |
| Primary advisor | Grove, Marty, 1958- | |
| Thesis advisor | Graham, S. A. (Stephan Alan), 1950- | |
| Thesis advisor | Grove, Marty, 1958- | |
| Thesis advisor | Dunbar, Robert B, 1954- | |
| Thesis advisor | Meisling, Kristian | |
| Thesis advisor | Caldwell, Margaret R | |
| Advisor | Dunbar, Robert B, 1954- | |
| Advisor | Meisling, Kristian | |
| Advisor | Caldwell, Margaret R |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Kelley Brumley. |
|---|---|
| Note | Submitted to the Department of Geological and Environmental Sciences. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2014. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2014 by Kelley J Brumley
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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