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    Class and Course
    1. NExT
    2. Petrotechnical
    3. Sequence stratigraphy applied to clastic sediments

    Sequence stratigraphy applied to clastic sediments

    • Skill
    • 5 Days
    • classroom1Classroom

    Sequence stratigraphy concepts are responsible of an important change in the way of analyzing and interpreting facies and stratigraphy.

    The course will start with an introduction to present an overview and let people know about the historical development of this concept, before giving a general approach and a methodology to follow. This later will be essentially based on the tools to be used for facies analysis, such as outcrops and cores (ideally), well logs and seismic sections, prior to define any workflow.

    The following step will be to understand the interaction of the different engines that control the sediment supply and the basin accommodation to be able to identify the main stratigraphic surfaces in order to define the sequences and their time attributes. The main goal will be to characterize the systems tracts and the sequences hierarchy.

    Once the stratigraphic sequences are defined, we’ll be able to better understand the evolution from one depositional environment to another and the transition chronology.
    Agenda

    Introduction
    - Overview and historical development
    - Approach and methodology


    Tools for facies analysis
    - Outcrops and cores
    - Well logs and seismic sections
    - Workflow


    Accommodation and shoreline shifts
    - Allogenic controls on sedimentation
    - Sediment supply and energy flux
    - Sediment accommodation
    - Shoreline shifts


    Stratigraphic surfaces
    - Types of stratal terminations
    - Sequence stratigraphic surfaces
    - Within-trend facies contacts


    Systems tracts
    - Highstand systems tract (HST)
    - Falling-stage systems tract (HST)
    - Lowstand systems tract (LST)
    - Transgressive systems tract (TST)
    - Regressive systems tract (RST)
    - Low- and high-accommodation systems tracts


    Sequence Models
    - Types of stratigraphic sequences
    - Sequences in fluvial systems
    - Sequences in coastal to shallow-water clastic systems
    - Sequences in deep-water clastic systems
    - Sequences in carbonate systems


    Time attributes of stratigraphic surfaces
    - Reference curve for the definition of stratigraphic surfaces
    - Shoreline shifts, grading, and bathymetry
    - Methods of definition of stratigraphic surfaces
    - Summary: time attributes of stratigraphic surfaces


    Hierarchy of Sequences and Sequence Boundaries
    - Hierarchy system based on cycle duration (boundary frequency)
    - Hierarchy system based on the magnitude of base-level changes

    All geoscientists having at least a basic level in clastic sediments sedimentology.

     


    • Accommodation and shoreline shifts
    • Stratigraphic surfaces
    • Systems tracts
    • Sequence Models
    • Time attributes of stratigraphic surfaces
    • Hierarchy of Sequences and Sequence Boundaries

    G&G people with good knowledge of clastic sedimentology and facies analysis, with ability to integrate the maximum of various data coming from all geoscience disciplines such as sedimentary geology with geophysics, geomorphology, age dating techniques and basin analysis.

     


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