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    Lecture-5 Sedimentary Environments and Facies

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    Sedimentary environments can be grouped into terrestrial (non-marine), marine, and transitional environments. Terrestrial environments include rivers, lakes, deserts, and glaciers where sediments accumulate on land. Marine environments cover areas like continental shelves, slopes, and abyssal plains where sediments build up underwater. Transitional environments exist where marine and non-marine environments meet, such as beaches, deltas, and estuaries. Facies are depositional environments characterized by their sediments, organisms, and geological processes.

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    Lecture-5 Sedimentary Environments and Facies

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    eng20072007
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    Sedimentary environments can be grouped into terrestrial (non-marine), marine, and transitional environments. Terrestrial environments include rivers, lakes, deserts, and glaciers where sediments accumulate on land. Marine environments cover areas like continental shelves, slopes, and abyssal plains where sediments build up underwater. Transitional environments exist where marine and non-marine environments meet, such as beaches, deltas, and estuaries. Facies are depositional environments characterized by their sediments, organisms, and geological processes.

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    Sedimentary environments can be grouped into terrestrial (non-marine), marine, and transitional environments. Terrestrial environments include rivers, lakes, deserts, and glaciers where sediments accumulate on land. Marine environments cover areas like continental shelves, slopes, and abyssal plains where sediments build up underwater. Transitional environments exist where marine and non-marine environments meet, such as beaches, deltas, and estuaries. Facies are depositional environments characterized by their sediments, organisms, and geological processes.

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    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    133 views2 pages

    Lecture-5 Sedimentary Environments and Facies

    Uploaded by

    eng20072007
    Sedimentary environments can be grouped into terrestrial (non-marine), marine, and transitional environments. Terrestrial environments include rivers, lakes, deserts, and glaciers where sediments accumulate on land. Marine environments cover areas like continental shelves, slopes, and abyssal plains where sediments build up underwater. Transitional environments exist where marine and non-marine environments meet, such as beaches, deltas, and estuaries. Facies are depositional environments characterized by their sediments, organisms, and geological processes.

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    Lecture – 5 Sedimentary Facies

    Sedimentary Environments

    Sedimentary environments are places where sediments accumulate and sedimentary


    rocks form. They can be grouped into:

     Terrestrial environments (non-marine)

    o Rivers (fluvial environment)

    o Alluvial fans

    o Lakes (lacustrine environment)

    o Swamps

    o Deserts (aeolian environment)

    o Glacial environment

    o Inland Sabkha and Playa

     Marine environments

    o Continental shelf

    o Continental slope and rise (deep sea fans)

    o Abyssal plain

    o Reefs

     Transitional environments (at the transition between the marine and non-
    marine environments)

    o Beach and barrier islands

    o Delta

    o Lagoons

    o Estuaries
    Facies is a depositional environment characterized by its own sediment, fauna, flora
    and depositional processes.

    Facies - the characteristics of a unit of sediments, which can be used to interpret the
    depositional environment.

    Depositional System is an assemblage of process-related sedimentary facies.

    Processes

    Biological

    Degradation (Consumption-Burrowing-Boring)

    Pelletization

    Organism-Enhanced Sedimentation (Sediment Baffles-

    Sediment Trappers)

    Physical

    Fluid Flow

    Settling of Particles

    Hydraulic and Sediment Textures

    Generation of Bedforms (Ripples, Cross bedding)

    Currents

    Waves

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