"Velocity Modeling and Earth Modeling on the Chukchi Platform, Chukchi Shelf, Alaska"

Andrew Clements, Thesis 2016

Abstract: Visualization of contemporary regional structural and stratigraphic features for over 43,305 km² of the Chukchi platform is possible with a 3D earth model. The Chukchi platform’s structural and stratigraphic evolution, from the Devonian through Paleogene, was better constrained from the analysis of forty modeled large-scale crustal faults and seven regional horizons (sedimentary sequences and unconformities). The focus of this study was the construction of a regional 3D earth model of the Chukchi platform from interpreted 2D seismic reflection data. A cubic polynomial function, averaged from the time-to-depth (TD) functions of acoustic sonic logs from five abandoned exploratory wells and average regional stacking velocities, was utilized in a velocity model to depth convert seismic interpretations recorded in time. 3D modeled horizons were used to describe depositional characteristics on the Chukchi platform from the Devonian through Paleogene. 3D modeled faults were used to create Devonian through Paleogene fault timing maps for basement faults in the northern and southern extents of the Chukchi platform study area. Future earth modeling of the Chukchi platform will improve with increased well control, seismic coverage, and seismic interpretation.

Full thesis available. Contact the Geology Department at 540-458-8800.