Turbidity current velocity, grain size and bedforms in turbidite channels and associated depositional systems

    Research output: Contribution to conferencePoster

    Abstract

    For much of their active life turbidite channels are characterised by relatively high velocity turbidity currents and associated mass transport processes. This high-energy phase leaves behind a signature of erosion and down-cutting, coupled with masstransport deposits, coarse- to medium-grained turbidites and deepwater massive sands. Thick to very thick beds are common, typically with lenticular geometries and marked lateral thickness variation, but with little evidence of systematic vertical trends of bed thickness. The late fill and abandonment stage of most channels is characterised by relatively lower velocity turbidity currents and associated emipelagic processes. This low-energy phase results in medium- to fine-grained
    turbidites and hemipelagites that are more extensive and continuous laterally and, in some cases, show upward-thinning trends of bed thickness. Channel levee, overbank and open-slope settings generally show still lower-energy currents and a dominance of fine-grained turbidites and hemipelagites.
    Original languageEnglish
    Pages1-2
    Number of pages2
    Publication statusPublished - Jun 2011
    EventInternal architecture, bedforms and geometry of turbidite channels - Geological Society, London, United Kingdom
    Duration: 20 Jun 201121 Jun 2011

    Conference

    ConferenceInternal architecture, bedforms and geometry of turbidite channels
    CountryUnited Kingdom
    CityLondon
    Period20/06/1121/06/11

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  • Cite this

    Stow, D., Gardiner, A. R., Patel, U., & Riahi, S. (2011). Turbidity current velocity, grain size and bedforms in turbidite channels and associated depositional systems. 1-2. Poster session presented at Internal architecture, bedforms and geometry of turbidite channels, London, United Kingdom.