Vertical and Lateral Facies Architecture of Levees and Their Genetically-Related Channels, Isaac Formation, Neoproterozoic Windermere Supergroup, Cariboo Mountains, B.C.

At the Castle Creek study area, levee deposits are well-exposed over an area of ~2.6 km wide and ~90 m thick. This provides an opportunity to describe their lateral and vertical lithological changes, and accordingly details about their reservoir geometry and stratal continuity. Here, levee deposits are divided vertically into packages, each consisting of a sand-rich lower part overlain sharply by a mud-rich upper part. Each lower part displays a consistent thickening then thinning trend laterally away from its genetically related channel. The characteristics of these packages suggest that they were controlled by recurring changes in the structure of channellized flows, which in turn was controlled by grain size and grain sorting. This ultimately was controlled by short-term changes in relative sea level. Moreover, some mud- and sand-rich strata are rich in residual carbon suggesting that mid-fan levees can serve as source rocks for hydrocarbon generation, and also reservoirs.

Grantor dc:publisher

Université d'Ottawa / University of Ottawa

Year dc:date

2017

Author dc:creator

• Bergen, Anika

Contributors dc:contributor

• Arnott, Robert

• sedimentology
• stratigraphy
• total organic carbon
• deep marine levee deposits
• Windermere Supergroup
• deep marine channel deposits

Language dc:language

en

Identifier

http://dx.doi.org/10.20381/ruor-20714

OAI identifier oai:identifier

oai:ruor.uottawa.ca:10393/36434