Changes

==Time significance of seismic reflections==

==Time significance of seismic reflections==

[[file:sedimentary-basin-analysis_fig4-27.png|300px|thumb|{{figure number|8}}. Copyright: Armentrout;<ref name=ch04r6 /> courtesy Gulf Coast SEPM.]]

[[file:sedimentary-basin-analysis_fig4-27.png|300px|thumb|{{figure number|8}}Seismic reflection profile schematic. Copyright: Armentrout;<ref name=ch04r6 /> courtesy Gulf Coast SEPM.]]

Using seismic reflection geometries to suggest relative sea level phase requires confidence in the coeval character of seismic reflections. The first downhole occurrence of ''Glob alt (Globoquadrina altispira'', bold arrows) in [[:file:sedimentary-basin-analysis_fig4-27.png|Figure 8]] suggests a correlation cross-cutting the seismically imaged clinoforms. If the ''Glob alt'' occurrences are coeval, the seismic reflections are time transgressive.

Using seismic reflection geometries to suggest relative sea level phase requires confidence in the coeval character of seismic reflections. The first downhole occurrence of ''Glob alt (Globoquadrina altispira'', bold arrows) in [[:file:sedimentary-basin-analysis_fig4-27.png|Figure 8]] suggests a correlation cross-cutting the seismically imaged clinoforms. If the ''Glob alt'' occurrences are coeval, the seismic reflections are time transgressive.