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Morpho-acoustic and sedimentologic characteristics of the Indus Fan

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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.

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  1. V. Kolla

    Present address: Lamont-Doherty Geological Observatory, 10964, Palisades, NY

Authors and Affiliations

  1. Superior Oil Company, 12401 Westheimer, 77077, Houston, TX

    V. Kolla

  2. Elf Aquitaine, Avenue des Lilas, 64018, Pau, France

    F. Coumes

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  1. V. Kolla
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  2. F. Coumes
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Kolla, V., Coumes, F. Morpho-acoustic and sedimentologic characteristics of the Indus Fan. Geo-Marine Letters 3, 133–139 (1983). https://doi.org/10.1007/BF02462458

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  • DOI: https://doi.org/10.1007/BF02462458

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