Insights into the growth and decay of orogenic wedges from foreland basin successions
Abstract/Contents
- Abstract
- Convergent plate margins are dynamic settings where the evolution of sedimentary basins is influenced by a variety of interrelated autogenic and allogenic processes. These include plate tectonic-scale processes such as plate subduction and the development of a volcanic arc, fold-thrust belt, and associated basins; the development of climatic gradients across the orogen; shallow-crustal structural partitioning of the basins into discrete depocenters; and the surficial (topographic) responses to such events. This dissertation examines the interplay of tectonic, sedimentary, and climatic processes during the evolution of two retroarc foreland basin systems: the Late Cretaceous-Eocene Magallanes-Austral basin of Patagonia (Chapters 2 and 3) and the Late Cretaceous-Oligocene Rocky Mountain foreland basin of southwestern Montana (Chapter 4). These chapters investigate a variety of geologic processes that occur at different temporal and spatial scales. Specifically, major goals of this dissertation include (1) generating a paleogeographic reconstruction of latest Cretaceous depositional environments in the Magallanes-Austral basin to better understand the termination of the long-lived deep-marine foreland basin (Chapter 2); (2) utilizing detrital zircon U-Pb ages to understand variations in sediment dispersal patterns and long-term average sedimentation rates during shoaling of the Magallanes-Austral basin (Chapter 3); and (3) integrating structural, stratigraphic, sediment provenance, and stable isotope ([delta] 18O, [delta] 13C) data to better understand the spatial and temporal relationships of tectonic activity and climate (Chapter 4). Data types and methods are diverse, and include detailed outcrop description, detrital zircon U-Pb geochronology, thin-section petrography, 1-D subsidence modelling, and stable isotope ([delta] 18O, [delta] 13C) stratigraphy from calcic paleosols.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2015 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Schwartz, Theresa M |
|---|---|
| Associated with | Stanford University, Department of Geological and Environmental Sciences. |
| Primary advisor | Graham, S. A. (Stephan Alan), 1950- |
| Thesis advisor | Graham, S. A. (Stephan Alan), 1950- |
| Thesis advisor | Chamberlain, C. Page |
| Thesis advisor | Lowe, Donald R, 1942- |
| Advisor | Chamberlain, C. Page |
| Advisor | Lowe, Donald R, 1942- |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Theresa M. Schwartz. |
|---|---|
| Note | Submitted to the Department of Geological and Environmental Sciences. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2015. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2015 by Theresa M Schwartz
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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