Changes

* Discontinuous

* Discontinuous

* Prograding—caused by lateral accretion of strata

* Prograding—caused by lateral accretion of strata

==Parallel reflector patterns==

==Parallel reflector patterns==

Parallel reflections include subparallel, wavy, and divergent. Parallel, subparallel, and wavy reflectors suggest uniform depositional rates on a uniformly subsiding surface, such as a shelf or basin plain. Divergent reflectors suggest lateral variations in depositional rates or progressive tilting of a depositional surface. The figure below shows reflection configurations for this group.

Parallel reflections include subparallel, wavy, and divergent. Parallel, subparallel, and wavy reflectors suggest uniform depositional rates on a uniformly subsiding surface, such as a shelf or basin plain. Divergent reflectors suggest lateral variations in depositional rates or progressive tilting of a depositional surface. [[:file:exploring-for-stratigraphic-traps_fig21-24.png|Figure 1]] shows reflection configurations for this group.

 

[[file:exploring-for-stratigraphic-traps_fig21-24.png|thumb|{{figure number|21-24}}.]]

==Discontinuous reflector patterns==

==Discontinuous reflector patterns==

[[file:exploring-for-stratigraphic-traps_fig21-25.png|thumb|{{figure number|21-25}}After .<ref name=ch21r31>Mitchum, R., M., Vail, P., R., Sangree, J., B., 1977, Seismic stratigraphy and global changes in sea level, part 6: stratigraphic interpretations of seismic reflection patterns in depositional sequences, in Payton, C., E., ed., Seismic Stratigraphy and [[Applications]] to Hydrocarbon Exploration: AAPG Memoir 26, p. 117–133.</ref>]]

[[file:exploring-for-stratigraphic-traps_fig21-25.png|thumb|{{figure number|21-25}}After .<ref name=ch21r31>Mitchum, R., M., Vail, P., R., Sangree, J., B., 1977, Seismic stratigraphy and global changes in sea level, part 6: stratigraphic interpretations of seismic reflection patterns in depositional sequences, in Payton, C., E., ed., Seismic Stratigraphy and [[Applications]] to Hydrocarbon Exploration: AAPG Memoir 26, p. 117–133.</ref>]]

==Prograding reflector patterns==

==Prograding reflector patterns==

One of the most common depositional features observed in seismic sections are clinoforms manifested in a configuration pattern called ''offlap''. Clinoforms are progradational strata that form through the progressive development of gently sloping surfaces. Paleowater depths can be interpreted from the height of prograding clinoforms. The diagram below shows prograding reflectors and their possible depositional significance.

One of the most common depositional features observed in seismic sections are clinoforms manifested in a configuration pattern called ''offlap''. Clinoforms are progradational strata that form through the progressive development of gently sloping surfaces. Paleowater depths can be interpreted from the height of prograding clinoforms. [[:file:exploring-for-stratigraphic-traps_fig21-26.png|Figure 2]] shows prograding reflectors and their possible depositional significance.

[[file:exploring-for-stratigraphic-traps_fig21-26.png|thumb|{{figure number|21-26}}After .<ref name=ch21r31 />]]

[[file:exploring-for-stratigraphic-traps_fig21-27.png|thumb|{{figure number|3}}.]]

==Channel fill patterns==

==Channel fill patterns==

[[file:exploring-for-stratigraphic-traps_fig21-27.png|thumb|{{figure number|21-27}}.]]

Channels are expressed in seismic sections as negative relief features truncating the underlying strata. Fill patterns are shown in [[:file:exploring-for-stratigraphic-traps_fig21-27.png|Figure 3]].

==See also==

==See also==