Thin-Bed Prediction by Geomorphology-Constrained Waveform Analysis

Summary

I introduce a seismic geomorphology– and stratal slice–based approach for waveform analysis of seismically thin beds in thinly interbedded formations. A thin bed is characterized by a predictable seismic geomorphologic pattern of the same shape but variable amplitude and phase along its waveform. This phenomenon can be captured and evaluated using stratal slices in geologic-time (Wheeler) domain. A seismic modeling study supports these observations and provides idealized data for development of a sensible workflow. A field-data test confirms that at least 3–4 thin fluvial channel sandstones (2–6 m each) can be recognized and mapped for their spatial distribution and relationship in a ?/4 (20–25 m) thick stratigraphic interval.