Hubbard, StephenEnglert, Rebecca Gail2017-09-272017-09-2720172017Englert, R. G. (2017). Controls on the Timing and Evolution of Deep-Water Sedimentation in the Late Cretaceous Nanaimo Basin, British Columbia, Canada (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25458http://hdl.handle.net/11023/4140Submarine channel-system deposits of the Late Cretaceous Nanaimo Group, British Columbia, Canada record long-lived (>10^6 yr) deep-water sedimentation across a tectonically active basin margin. The integration of detrital zircon geochronology and stratigraphic analyses provides a unique opportunity to characterize the paleogeographic setting, source-to-sink relationships, and temporal evolution of this ancient sediment-routing system. Three contemporaneous conglomeratic channel-levee deposits are documented across a 135-km basin margin (strike-oriented) transect, indicating a period of widespread deep-water sedimentation. At one of these locations, continuous sediment transfer occurred for 21.1 ± 3.4 m.y. through an established submarine conduit that underwent a period of prolonged sediment bypass followed by a phase of channel aggradation. The timing and nature of deposition along the paleo-basin margin relates to geomorphic and tectonic changes in the basin and upstream drainage-systems, suggesting localized and regional controls on deep-water sediment delivery. These deposits provide insight into the geologic history of North America and sediment dispersal in tectonically active settings globally.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Geologymaster thesishttp://dx.doi.org/10.11575/PRISM/25458