Controls on Landscape Denudation Between Lhasa and Namche Barwa, Southeastern Tibet
Abstract/Contents
- Abstract
- Twenty new 10Be-derived basin-averaged denudation rates from the region upstream of the Namche Barwa massif resolve the relationship between these rates, and tectonic and climatic variables. Denudation rates correlate well with channel steepness and local relief; precipitation, in contrast, serves as a poor predictor of denudation. In the Yarlung River, denudation rates steadily increase from the headwaters towards the Namche Barwa massif, which is apparently undergoing rapid exhumation over the million-year timescales recorded by low-temperature thermochronologic measurements. North of the Yarlung in the Nyang River, accelerated denudation rates somewhat correspond with the location of active footwall uplift associated with extensional structures. My data, in combination with previously reported 10Be-derived denudation rates from the Parlung River, suggest that regional order-of-magnitude variations in denudation rate are associated with profile knickpoints in the vicinity of Namche Barwa and within the Parlung. Thus, it appears that regional base-level changes, as well as local tectonic effects associated with extension within the Plateau and uplift along its margin, act to steepen the landscape, and in doing so, accelerate denudation.
Description
| Type of resource | text |
|---|---|
| Date created | June 2010 |
Creators/Contributors
| Author | Levine, Nathaniel Moses |
|---|---|
| Primary advisor | Hilley, George E. |
| Advisor | Klemperer, Simon |
| Degree granting institution | Stanford University, Department of Geological and Environmental Sciences |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Subject | Tibet |
| Genre | Thesis |
Bibliographic information
Access conditions
- Use and reproduction
- Theses courtesy of Stanford University Libraries. If you have questions, please contact the Branner Earth Science Library & Map Collections at brannerlibrary@stanford.edu.
Preferred citation
- Preferred Citation
- Levine, Nathaniel Moses. (2010). Controls on Landscape Denudation Between Lhasa and Namche Barwa, Southeastern Tibet. Stanford Digital Repository. Available at: http://purl.stanford.edu/bg571zz1998
Collection
Undergraduate Honors Theses, Doerr School of Sustainability
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