Changes

Jump to navigation Jump to search
201 bytes added ,  17:17, 8 September 2014
Line 51: Line 51:  
[[:file:sedimentary-basin-analysis_fig4-36.png|Figure 1]] is the interpreted [[Seismic facies mapping|seismic facies]] pattern for part of one [[Seismic interpretation|seismic reflection profile]] down the axis of the High Island-East Breaks [[depocenter]].<ref name=ch04r7>Armentrout, J., M., 1991, Paleontological constraints on depositional modeling: examples of integration of biostratigraphy and seismic stratigraphy, Pliocene–Pleistocene, Gulf of Mexico, in Weimer, P., Link, M., H., eds., Seismic Facies and Sedimentary Processes of Submarine Fans and Turbidite Systems: New York, Springer-Verlag, p. 137–170.</ref> This is the same seismic profile shown in [[:file:sedimentary-basin-analysis_fig4-27.png|Figure 2]].
 
[[:file:sedimentary-basin-analysis_fig4-36.png|Figure 1]] is the interpreted [[Seismic facies mapping|seismic facies]] pattern for part of one [[Seismic interpretation|seismic reflection profile]] down the axis of the High Island-East Breaks [[depocenter]].<ref name=ch04r7>Armentrout, J., M., 1991, Paleontological constraints on depositional modeling: examples of integration of biostratigraphy and seismic stratigraphy, Pliocene–Pleistocene, Gulf of Mexico, in Weimer, P., Link, M., H., eds., Seismic Facies and Sedimentary Processes of Submarine Fans and Turbidite Systems: New York, Springer-Verlag, p. 137–170.</ref> This is the same seismic profile shown in [[:file:sedimentary-basin-analysis_fig4-27.png|Figure 2]].
   −
Each [[Well_log_sequence_analysis#Parasequence_stacking_patterns|prograding]] [http://unterm.un.org/DGAACS/unterm.nsf/8fa942046ff7601c85256983007ca4d8/6d701a3f58b3c00d852570d70052c711?OpenDocument clinoform] contains a rotated package of chaotic facies within the upper and steepest part of the clinoform facies and basinward of the tabular facies. The clinoform facies is onlapped by parallel, moderate-amplitude, onlapping reflections of the onlap-fill facies, which are subsequently downlapped onto by the next overlying prograding clinoform. In a broader sense, the drape facies below these clinoforms and the ''Glob N'' datum represent basinal deposits; the clinoform and onlapping-fill facies represent slope deposits; and the overlying tabular facies above the clinoforms and the ''Glob M'' datum represent shelf deposits—all part of a basin-filling succession.
+
Each [[Well_log_sequence_analysis#Parasequence_stacking_patterns|prograding]] [http://unterm.un.org/DGAACS/unterm.nsf/8fa942046ff7601c85256983007ca4d8/6d701a3f58b3c00d852570d70052c711?OpenDocument clinoform] contains a rotated package of chaotic facies within the upper and steepest part of the clinoform facies and basinward of the tabular facies. The clinoform facies is [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=onlap onlapped] by parallel, moderate-amplitude, onlapping reflections of the onlap-fill facies, which are subsequently [http://www.glossary.oilfield.slb.com/en/Terms/d/downlap.aspx downlapped] onto by the next overlying prograding clinoform. In a broader sense, the drape facies below these clinoforms and the ''Glob N'' datum represent basinal deposits; the clinoform and onlapping-fill facies represent [http://www.thefreedictionary.com/continental+slope slope] deposits; and the overlying tabular facies above the clinoforms and the ''Glob M'' datum represent shelf deposits—all part of a basin-filling succession.
    
Associated foraminiferal [[Fossil assemblage|biofacies]] shown in [[:file:sedimentary-basin-analysis_fig4-27.png|Figure 2]] and [[:file:sedimentary-basin-analysis_fig4-29.png|Figure 3]] support this analysis. The ''Glob alt'' sequence is the fourth clinoform from the right, the fourth-most basinward of five oblique clinoforms that toplap along a common horizon. Superjacent clinoforms show progressively more topset deposition forming sigmoidal clinoforms, suggesting relative rise of sea level (with consistent widespread increase in accommodation space). Observations of seismic facies from a single phase of deposition, such as lowstand or highstand, are recorded on a map and contoured to convey the distribution of each seismic facies ([[:file:sedimentary-basin-analysis_fig4-37.png|Figures 4]] and [[:file:sedimentary-basin-analysis_fig4-38.png|5]]).
 
Associated foraminiferal [[Fossil assemblage|biofacies]] shown in [[:file:sedimentary-basin-analysis_fig4-27.png|Figure 2]] and [[:file:sedimentary-basin-analysis_fig4-29.png|Figure 3]] support this analysis. The ''Glob alt'' sequence is the fourth clinoform from the right, the fourth-most basinward of five oblique clinoforms that toplap along a common horizon. Superjacent clinoforms show progressively more topset deposition forming sigmoidal clinoforms, suggesting relative rise of sea level (with consistent widespread increase in accommodation space). Observations of seismic facies from a single phase of deposition, such as lowstand or highstand, are recorded on a map and contoured to convey the distribution of each seismic facies ([[:file:sedimentary-basin-analysis_fig4-37.png|Figures 4]] and [[:file:sedimentary-basin-analysis_fig4-38.png|5]]).
4,231

edits

Navigation menu