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.
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The regressive deposits that form when sediment accumulation rates exceed the rate of relative sea-level rise
Genetically associated stratigraphic units that were deposited during specific phases of the relative sea-level cycle
Tectonically active basins that adjoin each other
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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
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
Deposits that accumulate after the onset of relative a sea-level rise
Deposits that contain characteristic transform fractures that often stream biogenetic fluids
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Caused lateral outbuilding
Are a suite of well logs
Resulted igneous intrusions in the midst of a system marked by the rapid deposition of sediment from the fluvial systems
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
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Early phase lowstand systems tract
Late phase lowstand systems tract
Transgressive systems tract
Highstand systems tract
All of the above
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Condensed sequences
Ravinement erosion surface
Contact metamorphosis
Secondary dolomite mixed with sphalerite
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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.
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.
Fungal growths in the intertidal and shallow marine where scouring has often removed the unconsolidated layers at the sediment surface.
An assemblage of burrows (vertical, U-shaped, or sparsely branched) that occur in deep marine fungal clastics, turbidite facies, and high TOC glossy shales.
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Display characteristic well log signatures
Display characteristic well log signatures
May include a retrogradational parasequence set
May include a retrogradational parasequence set
All of the above
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The sea surface: global sea level measured from a datum such as the center of earth)
The sea floor (tectonics)
Changes in rates of sediment accumulation
All of the above
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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.
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.
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.
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.
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Oolites
Deep water intraclasts
Reefal skeletal remains
Pisolites and oncoids
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