|
|
 |
|||||||||||||||||
|
|||||||||||||||||
 |
|||||||||||||||||
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
1 Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, USA
Northernmost Chile is home to a well-preserved disequilibrium landscape of great antiquity. Contrasting drainage patterns are developed on the western slope of the Altiplano plateau. The oldest of these patterns is a now-relict parallel-patterned drainage network. In places a younger pattern, comprising a series of deeply incised canyons, or quebradas, crosscuts the older parallel-patterned network. These canyons show strong evidence of a groundwater-sapping origin. We hypothesize that the initiation of the canyon network resulted from changes in the hydrological regime related to a drying out of climate of the forearc and to the uplift of the Altiplano plateau.
Key Words: Andes • geomorphology • rivers and streams • groundwater • groundwater sapping
This article has been cited by other articles:
|
|
 |
|
  C. N. Garzione, G. D. Hoke, J. C. Libarkin, S. Withers, B. MacFadden, J. Eiler, P. Ghosh, and A. Mulch Rise of the Andes Science, June 6, 2008; 320(5881): 1304 - 1307. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. Tooth Arid geomorphology: recent progress from an Earth System Science perspective Progress in Physical Geography, February 1, 2008; 32(1): 81 - 101. [PDF]
|
|
|
|
 |
|
 P. L. Nester, E. Gayo, C. Latorre, T. E. Jordan, and N. Blanco Perennial stream discharge in the hyperarid Atacama Desert of northern Chile during the latest Pleistocene PNAS, December 11, 2007; 104(50): 19724 - 19729. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. P. Lamb, A. D. Howard, W. E. Dietrich, and J. T. Perron Formation of amphitheater-headed valleys by waterfall erosion after large-scale slumping on Hawai'i Geological Society of America Bulletin, July 1, 2007; 119(7-8): 805 - 822. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. J. Harris, A. E. Carey, W.B. Lyons, K. A. Welch, and A. G. Fountain Solute and isotope geochemistry of subsurface ice melt seeps in Taylor Valley, Antarctica Geological Society of America Bulletin, May 1, 2007; 119(5-6): 548 - 555. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 W.G. Ernst Petrotectonics, climate, crustal thickness, and evolution of geologically young orogenic belts Geological Society of America Memoirs, January 1, 2007; 200(0): 159 - 179. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. A. Rech, B. S. Currie, G. Michalski, and A. M. Cowan Neogene climate change and uplift in the Atacama Desert, Chile Geology, September 1, 2006; 34(9): 761 - 764. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. Ghosh, C. N. Garzione, and J. M. Eiler Rapid Uplift of the Altiplano Revealed Through 13C-18O Bonds in Paleosol Carbonates Science, January 27, 2006; 311(5760): 511 - 515. [Abstract] [Full Text] [PDF]
|
|
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
