The Impact of Incipient Uplift on Patterns of Fluvial Deposition: An Example from the Salt Range, Northwest Himalayan Foreland, Pakistan

  1. M. Marzo and
  2. C. Puigdefábregas
  1. T. J. Mulder and
  2. D. W. Burbank

Published Online: 14 APR 2009

DOI: 10.1002/9781444303995.ch33

Alluvial Sedimentation

Alluvial Sedimentation

How to Cite

Mulder, T. J. and Burbank, D. W. (1993) The Impact of Incipient Uplift on Patterns of Fluvial Deposition: An Example from the Salt Range, Northwest Himalayan Foreland, Pakistan, in Alluvial Sedimentation (eds M. Marzo and C. Puigdefábregas), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444303995.ch33

Editor Information

  1. Barcelona, Spain

Author Information

  1. Department of Geological Sciences, University of Southern California, Los Angeles, CA 90089-0740, USA

  1. International Technology Corporation, Chester Towers, 11499 Chester Road, Cincinnati, OH 45246, USA

Publication History

  1. Published Online: 14 APR 2009
  2. Published Print: 16 SEP 1993

ISBN Information

Print ISBN: 9780632035458

Online ISBN: 9781444303995

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Keywords:

  • the impact of incipient uplift;
  • Impact of incipient uplift on fluvial deposition;
  • two formations in vicinity of Salt Range;
  • correlations of magnetostratigraphies used;
  • brown sandbodies show dramatic contrasts with white sandstone system

Summary

During much of the middle and late Miocene, the Northwest Himalayan foreland basin was dominated by a large, eastward flowing, axial fluvial system analogous to the modern Ganges drainage. As structural deformation encroached on the foreland during latest Miocene to Pleistocene, the foreland became increasingly partitioned. One of the earliest defined deformational events was the incipient uplift of the Salt Range along the southern margin of the Potwar Plateau. Initial deformation of the Salt Range at 5.7–5.8 Ma is manifest in the depositional record by the appearance of N–NE-flowing fan deposits that initially interfinger with and eventually replace large-scale sheet sandstone bodies of the east-flowing axial draining system. Detailed stratigraphic investigations serve to delineate the contrast between these two systems. Distinctive upward fining trends occur during this transition, and channel-belt width and depth dimensions decrease significantly as the local, smaller rivers begin to dominate the proximal depositional record. Within the temporal context defined by magnetostratigraphic data, a gradual northwards displacement of the ancestral, axial, Indus-like system in response to the initial stage of uplift can be delineated. Continuing deformation appears to have shunted the ancestral Indus system to the west and off the Potwar Plateau slightly after 5 Ma.