VALLEY INCISION AND THE UPLIFT OF MOUNTAIN PEAKS

被引:129
作者
MONTGOMERY, DR [1 ]
机构
[1] UNIV WASHINGTON, QUATERNARY RES CTR, SEATTLE, WA 98195 USA
关键词
D O I
10.1029/94JB00122
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Simple end-member models describe the effect of isostatically compensated valley incision on the elevation of mountain peaks. These models allow calculation of the maximum portion of mountain peak elevations attributable to the development of observed relief and predict general downstream patterns of ridgetop uplift in response to erosion by fluvial processes. Analyses of topographic profiles across major drainages of the central Sierra Nevada and the Tibetan Plateau indicate that isostatically compensated valley incision could account for at most 5-10% of the present elevation of mountain peaks. In contrast, analyses of topographic profiles across the Himalaya show that as much as 20-30% of the present elevation of Himalayan peaks could be explained by isostatically compensated valley incision. The degree to which valley incision is compensated locally, however, depends on the flexural rigidity of the lithosphere, the size of the range, and its tectonic boundary conditions. These results show that while a tectonic control is required for late Cenozoic surface uplift of the Sierra Nevada, a significant portion of the elevation of Himalayan peaks may reflect late Cenozoic valley incision on the margin of the Tibetan Plateau.
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收藏
页码:13913 / 13921
页数:9
相关论文
共 53 条
[41]  
Seidl M. A., 1992, CATENA SUPP, P101, DOI DOI 10.1029/2007WR006219
[42]   FLEXURAL MODELS OF CONTINENTAL LITHOSPHERE BASED ON THE LONG-TERM EROSIONAL DECAY OF TOPOGRAPHY [J].
STEPHENSON, R .
GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY, 1984, 77 (02) :385-413
[43]   RIFT FLANK UPLIFTS AND HINTERLAND BASINS - COMPARISON OF THE TRANSANTARCTIC MOUNTAINS WITH THE GREAT ESCARPMENT OF SOUTHERN AFRICA [J].
TENBRINK, U ;
STERN, T .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1992, 97 (B1) :569-585
[44]  
TURCOTTE DL, 1982, GEODYNAMICS APPLICAT
[45]  
UNRUH JR, 1991, GEOL SOC AM BULL, V103, P1395, DOI 10.1130/0016-7606(1991)103<1395:TUOTSN>2.3.CO
[46]  
2
[47]   The rise of the Himalaya [J].
Wagen, LR .
NATURE, 1933, 132 :28-28
[48]   THE ARUN RIVER DRAINAGE PATTERN AND THE RISE OF THE HIMALAYA [J].
Wager, L. R. .
GEOGRAPHICAL JOURNAL, 1937, 89 (03) :239-250
[49]  
WAHRHAFTIG C, 1965, GEOL SOC AM BULL, V76, P1165, DOI 10.1130/0016-7606(1965)76[1165:STOTSS]2.0.CO
[50]  
2