Multi-Scale Analysis of Deep-Water Deposits from High-Relief Slope Systems, Cretaceous Strata of the Magallanes Basin, Southern Chile and Colville Basin, Northern Alaska ...

• Main Author: Pemberton, Erin
• Format: Article in Journal/Newspaper
• Language: English
• Published: Graduate Studies 2016
• Subjects: Geology; FOS Earth and related environmental sciences; Geophysics; Sedimentology; Stratigraphy; Deep-Water; Magallanes Basin; Tres Pasos Formation; Colville Basin; Geocellular Modeling; Forward Seismic Model; Brookian; Turbidite; Clinoform; north slope; Alaska
• Online Access: https://dx.doi.org/10.11575/prism/27036; https://prism.ucalgary.ca/handle/11023/2979

Deep-water depositional systems are as diverse as their shallow marine counterparts, yet remain more poorly understood. Due to an inability to directly monitor high-energy currents in the deep-sea, key insights about formative processes are deduced from the stratigraphic record. In this thesis, sedimentary processes and stratigraphic architecture of slope depositional systems are studied at multiple scales and in varied datasets. The basis of this investigation are two Cretaceous-aged slope systems of similar relief and evolution: 1) the Brookian succession of the Colville Basin, North Slope, Alaska; and 2) the Tres Pasos-Dorotea succession of the Magallanes Basin, Chile. Sediment transfer from shallow marine shelf settings to the deep-sea is controlled by a variety of allogenic (e.g., sediment supply) and autogenic (e.g., delta lobe switching) factors. 3-D seismic analysis of the Alaskan slope system demonstrates varied sediment delivery beyond the shelf edge to the deep-sea both in time and space. The ...