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| | part = Critical elements of the petroleum system | | | part = Critical elements of the petroleum system |
| | chapter = Sedimentary basin analysis | | | chapter = Sedimentary basin analysis |
− | | frompg = 4-1 | + | | frompg = 4-32 |
− | | topg = 4-123 | + | | topg = 4-34 |
| | author = John M. Armentrout | | | author = John M. Armentrout |
| | link = http://archives.datapages.com/data/specpubs/beaumont/ch04/ch04.htm | | | link = http://archives.datapages.com/data/specpubs/beaumont/ch04/ch04.htm |
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| | isbn = 0-89181-602-X | | | isbn = 0-89181-602-X |
| }} | | }} |
− | A [[depositional sequence]] is bounded by [[Unconformity|unconformities]] or the correlative conformity. It is subdivided by internal surfaces of [[transgression]] and [[maximum flooding]].<ref name=ch04r99>Vail, P., R., 1987, [http://archives.datapages.com/data/specpubs/oversiz2/data/a188/a188/0001/0000/0001.htm Seismic stratigraphy interpretation procedure], in Bally, A., W., ed., Atlas of Seismic Stratigraphy: [http://store.aapg.org/detail.aspx?id=478 AAPG Studies in Geology No. 1], p. 1–10.</ref><ref name=ch04r70>Mitchum, R., M., Jr., Van Wagoner, J., C., 1990, High-frequency sequences and eustatic cycles in the Gulf of Mexico basin: Proceedings, Gulf Coast Section SEPM 11th Annual Research conference, p. 257–267.</ref> Each of these surfaces is [[Chronostratigraphy|chronostratigraphically]] significant, consistently separating older strata from younger strata. | + | A depositional sequence is bounded by [[Unconformity|unconformities]] or the correlative conformity. It is subdivided by internal surfaces of [[transgression]] and [[maximum flooding]].<ref name=ch04r99>Vail, P. R., 1987, [http://archives.datapages.com/data/specpubs/oversiz2/data/a188/a188/0001/0000/0001.htm Seismic stratigraphy interpretation procedure], in A. W. Bally, ed., Atlas of Seismic Stratigraphy: [http://store.aapg.org/detail.aspx?id=478 AAPG Studies in Geology No. 1], p. 1–10.</ref><ref name=ch04r70>Mitchum, R. M., Jr., and J. C. Van Wagoner, 1990, High-frequency sequences and eustatic cycles in the Gulf of Mexico basin: Proceedings, Gulf Coast Section SEPM 11th Annual Research conference, p. 257–267.</ref> Each of these surfaces is [[Chronostratigraphy|chronostratigraphically]] significant, consistently separating older strata from younger strata. |
| | | |
| ==Identifying data== | | ==Identifying data== |
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| | | |
| * [[Seismic data|Seismic record sections]] | | * [[Seismic data|Seismic record sections]] |
− | * [[Biostratigraphic histogram]]s | + | * [[Identifying depositional sequences from biostratigraphic data|Biostratigraphic histograms]] |
− | * Wireline logs | + | * [[Basic open hole tools|Wireline logs]] |
| * Detailed measured stratigraphic sections | | * Detailed measured stratigraphic sections |
| * Combinations of the above items | | * Combinations of the above items |
| | | |
| ==Procedure== | | ==Procedure== |
− | Use the table below to identify depositional sequences. | + | Use the procedure below to identify depositional sequences. |
| | | |
− | {| class = "wikitable"
| + | # Identify depositional sequences in [[Seismic data|seismic reflection profiles]], correlating sequence boundaries throughout a data grid of seismic reflection profiles. |
− | |-
| + | # Analyze biostratigraphic data for [[Biostratigraphy in sequence stratigraphy|age-significant bioevents]] and [[Biostratigraphic correlation and age determination#Changes in abundance or composition|abundance patterns]] that may suggest depositional sequences. |
− | ! Step
| + | # Analyze the depositional patterns from [[Basic open hole tools|wireline logs]], integrate the biostratigraphic data with correlated well log and [[seismic data]], and select candidate depositional sequences. |
− | ! Action
| + | # Make regional stratigraphic sections by integrating seismic profile interpretations, biostratigraphic analyses, and regional well log [[cross section]]s. |
− | |-
| + | # Identify depositional sequences based on the fully integrated data set. |
− | | 1
| |
− | | Identify depositional sequences in seismic reflection profiles, correlating sequence boundaries throughout a data grid of seismic reflection profiles.
| |
− | |-
| |
− | | 2
| |
− | | Analyze biostratigraphic data for age-significant bioevents and abundance patterns that may suggest depositional sequences.
| |
− | |-
| |
− | | 3
| |
− | | Analyze the depositional patterns from wireline logs, integrate the biostratigraphic data with correlated well log and [[seismic data]], and select candidate depositional sequences.
| |
− | |-
| |
− | | 4
| |
− | | Make regional stratigraphic sections by integrating seismic profile interpretations, biostratigraphic analyses, and regional well log [[cross section]]s.
| |
− | |-
| |
− | | 5
| |
− | | Identify depositional sequences based on the fully integrated data set.
| |
− | |}
| |
| | | |
| ==See also== | | ==See also== |
− | * [[Depositional sequence]]
| + | |
| * [[Definitions of depositional system elements]] | | * [[Definitions of depositional system elements]] |
| * [[Identifying depositional sequences in seismic sections]] | | * [[Identifying depositional sequences in seismic sections]] |
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| [[Category:Critical elements of the petroleum system]] | | [[Category:Critical elements of the petroleum system]] |
| [[Category:Sedimentary basin analysis]] | | [[Category:Sedimentary basin analysis]] |
| + | [[Category:Treatise Handbook 3]] |