Tectonics from topography: Procedures, promise, and pitfalls
Top Cited Papers
- 1 January 2006
- book chapter
- Published by Geological Society of America
Abstract
Empirical observations from fluvial systems across the globe reveal a consistent power-law scaling between channel slope and contributing drainage area. Theoretical arguments for both detachment- and transport-limited erosion regimes suggest that rock uplift rate should exert first-order control on this scaling. Here we describe in detail a method for exploiting this relationship, in which topographic indices of longitudinal profile shape and character are derived from digital topographic data. The stream profile data can then be used to delineate breaks in scaling that may be associated with tectonic boundaries. The description of the method is followed by three case studies from varied tectonic settings. The case studies illustrate the power of stream profile analysis in delineating spatial patterns of, and in some cases, temporal changes in, rock uplift rate. Owing to an incomplete understanding of river response to rock uplift, the method remains primarily a qualitative tool for neotectonic investigations; we conclude with a discussion of research needs that must be met before we can extract quantitative information about tectonics directly from topography.Keywords
This publication has 39 references indexed in Scilit:
- Modeling large-scale fluvial erosion in geographic information systemsGeomorphology, 2003
- Numerical modeling of fluvial strath-terrace formation in response to oscillating climateGSA Bulletin, 2002
- Spatial coincidence of rapid inferred erosion with young metamorphic massifs in the HimalayasGeology, 2002
- Glacial erosion and relief production in the Eastern Sierra Nevada, CaliforniaGeomorphology, 2002
- Modeling mountain building and the seismic cycle in the Himalaya of NepalJournal of Geophysical Research, 2000
- Structural and topographic evolution of the central Transverse Ranges, California, from apatite fission‐track, (U–Th)/He and digital elevation model analysesBasin Research, 2000
- Dynamic Equilibrium Between an Active Uplift and the Sevier River, UtahThe Journal of Geology, 1998
- Bedrock incision, rock uplift and threshold hillslopes in the northwestern HimalayasNature, 1996
- How flat is Tibet?Geology, 1994
- Stream gradient as a function of order, magnitude, and dischargeWater Resources Research, 1974