Geo-Marine Letters

, Volume 3, Issue 2–4, pp 133–139 | Cite as

Morpho-acoustic and sedimentologic characteristics of the Indus Fan

  • V. Kolla
  • F. Coumes
Article

Abstract

The upper Indus Fan is characterized by an average 1∶500 gradient, chanels with 100 m high levees, several continuous subbottom reflectors on 3.5-kHz records, and generally fine-grained sediments. Multichannel seismics show the levee complexes typified by overlapping wedge-shaped reflection sets and channel axis by high-amplitude discontinuous reflections. The middle fan has 1∶500–1∶1000 gradients and channels with ≈20 m high levees. The lower fan has gradients less than 1∶1000, channels with 8–20 m high levees, few or no subbottom reflectors on 3.5-kHz records, and high sand content. Besides the dominant unchannelized turbidity currents, channelized and overbank flows also played a significant role in the sedimentation of the lower fan.

Keywords

Channel Migration Sedimentologic Characteristic Depositional Lobe Channel Abandonment Levee Height 

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Copyright information

© Springer-Verlag New York Inc. 1984

Authors and Affiliations

  • V. Kolla
    • 1
  • F. Coumes
    • 2
  1. 1.Superior Oil CompanyHouston
  2. 2.Elf AquitainePauFrance

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