Aapg Quiz: Sequence Stratigraphy, Part 2 (Of 5)

10 Questions | Total Attempts: 887

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Basics of Sequence Stratigraphy Basic concepts and terminology in sequence stratigraphy will help you develop an understanding of the models at work. AAPG and its sister organization, SEPM, offer a wide array of informational and instructional materials to help you learn what sequence stratigraphy is, and to apply it in ways that will help you. Test your knowledge of basic concepts and terminology in sequence stratigraphy by taking the quick ten-question quiz. Be sure to fill in your full name -- you'll be able to print out a certificate of completion, which includes your score on the quiz. If you need to refresh your knowledge, please check out this website (provided by AAPG's sister society, SEPM). You may open the website and keep it open in a separat


Questions and Answers
  • 1. 
    A systems tract consists of
    • A. 

      The regressive deposits that form when sediment accumulation rates exceed the rate of relative sea-level rise

    • B. 

      Genetically associated stratigraphic units that were deposited during specific phases of the relative sea-level cycle

    • C. 

      Tectonically active basins that adjoin each other

  • 2. 
    A highstand systems tract consists of
    • A. 

      All the regressional deposits that accumulated after the onset of a relative sea-level fall and before the start of the next relative sea-level rise

    • B. 

      All the regressional deposits that accumulated after the onset of a relative sea-level fall and before the start of the next relative sea-level rise

    • C. 

      Deposits that accumulate after the onset of relative a sea-level rise

    • D. 

      Deposits that contain characteristic transform fractures that often stream biogenetic fluids

  • 3. 
    Falling stage systems tract (FSST)
    • A. 

      Caused lateral outbuilding

    • B. 

      Are a suite of well logs

    • C. 

      Resulted igneous intrusions in the midst of a system marked by the rapid deposition of sediment from the fluvial systems

    • D. 

      Includes all the regressional deposits that accumulated after the onset of a relative sea-level fall and before the start of the next relative sea-level rise

  • 4. 
    The systems tracts defined in order of deposition to form the ideal sequence include:
    • A. 

      Early phase lowstand systems tract

    • B. 

      Late phase lowstand systems tract

    • C. 

      Transgressive systems tract

    • D. 

      Highstand systems tract

    • E. 

      All of the above

  • 5. 
    ________________________ formed when the transgressing sea reworks either the prior sequence boundary or the sediments that may have collected during the forced regression that may have followed the generation of that sequence boundary.
    • A. 

      Condensed sequences

    • B. 

      Ravinement erosion surface

    • C. 

      Contact metamorphosis

    • D. 

      Secondary dolomite mixed with sphalerite

  • 6. 
    Glossifungites refers to
    • A. 

      An assemblage of fish skeletons causing natural fractures that occur in firm, but not lithified siliciclastic and/or carbonate muds and silts of the intertidal and shallow marine where scouring has often removed the unconsolidated layers at the sediment surface.

    • B. 

      An assemblage of burrows (vertical, U-shaped, or sparsely branched) that occur in firm, but not lithified siliciclastic and/or carbonate muds and silts of the intertidal and shallow marine where scouring has often removed the unconsolidated layers at the sediment surface.

    • C. 

      Fungal growths in the intertidal and shallow marine where scouring has often removed the unconsolidated layers at the sediment surface.

    • D. 

      An assemblage of burrows (vertical, U-shaped, or sparsely branched) that occur in deep marine fungal clastics, turbidite facies, and high TOC glossy shales.

  • 7. 
    Stacking patterns
    • A. 

      Display characteristic well log signatures

    • B. 

      Display characteristic well log signatures

    • C. 

      May include a retrogradational parasequence set

    • D. 

      May include a retrogradational parasequence set

    • E. 

      All of the above

  • 8. 
    Accommodation was defined by Jervey (1998) as "the space available for potential sediment accumulation. This space is the combined product of movement of:
    • A. 

      The sea surface: global sea level measured from a datum such as the center of earth)

    • B. 

      The sea floor (tectonics)

    • C. 

      Changes in rates of sediment accumulation

    • D. 

      All of the above

  • 9. 
    Sediment accumulation for both clastics and carbonates vary as a function of sea level position. Clastic accumulation will tend to vary as a function of accommodation.
    • A. 

      It is higher offshore during relative sea level lows when lower rates of erosion of the more exposed inland interfluve areas occur and deposition is proximal to this erosion.

    • B. 

      It is higher offshore during relative sea level lows when higher rates of erosion of the more exposed inland interfluve areas occur and deposition is distal to this erosion.

    • C. 

      It is higher offshore during relative sea level lows when higher rates of erosion of the more exposed inland interfluve areas occur and deposition is distal to this erosion.

    • D. 

      It is higher offshore during relative sea level highs when higher rates of erosion of the more exposed inland interfluve areas occur and deposition is proximal to this erosion.

  • 10. 
    Carbonates tend to accumulate in the offshore with rapid rises in sea level, and can keep pace with the sea level rise in the inner shelf lagoons. During highs in sea level the carbonate accumulation fills the inner shelf and progrades seaward across shallow shelves. Carbonate found in the supratidal environment include
    • A. 

      Oolites

    • B. 

      Deep water intraclasts

    • C. 

      Reefal skeletal remains

    • D. 

      Pisolites and oncoids

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