Difference between revisions of "Depositional sequence identification"

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==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 data|seismic reflection profiles]], correlating sequence boundaries throughout a data grid of seismic reflection profiles.
 
|-
 
| 2
 
| 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.
 
|-
 
| 3
 
| 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.
 
|-
 
| 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==

Revision as of 14:32, 18 November 2014

Exploring for Oil and Gas Traps
Series Treatise in Petroleum Geology
Part Critical elements of the petroleum system
Chapter Sedimentary basin analysis
Author John M. Armentrout
Link Web page
Store AAPG Store

A depositional sequence is bounded by unconformities or the correlative conformity. It is subdivided by internal surfaces of transgression and maximum flooding.[1][2] Each of these surfaces is chronostratigraphically significant, consistently separating older strata from younger strata.

Identifying data

To identify depositional sequences, we use the following:

Procedure

Use the procedure below to identify depositional sequences.

  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 sections.
  5. Identify depositional sequences based on the fully integrated data set.

See also

References

  1. Vail, P., R., 1987, Seismic stratigraphy interpretation procedure, in Bally, A., W., ed., Atlas of Seismic Stratigraphy: AAPG Studies in Geology No. 1, p. 1–10.
  2. 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.

External links

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Depositional sequence identification
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