<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>32</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Crerar, Erin Elizabeth</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Sedimentology and stratigraphic evolution of a tidally influenced marginal-marine complex: The Lower Cretaceous McMurray Formation, Athabasca Oil Sands deposit, northeastern Alberta</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">fossil</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2003</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://search.proquest.com/docview/305246524</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">University of Ottawa</style></pub-location><volume><style face="normal" font="default" size="100%">Earth Sciences</style></volume><language><style face="normal" font="default" size="100%">en</style></language><abstract><style face="normal" font="default" size="100%">Within the Lewis study area, McMurray Formation strata comprise 4 facies associations that form a depositional continuum of braided-fluvial (FA1), tidally-influenced braided- to low-accommodation meandering-fluvial and meandering-tidal channel-fills (FA2), associated overbank (FA3), and open-estuarine tidal flat deposits (FA4). The primary reservoir occurs in transgressive FA2 deposits.

Lower-FA2 channels incise older water-wet FA1sand and consist of medium to locally-coarse, bitumen-saturated sand with rare to locally common pin-stripe laminated and/or 1-5 cm thick mud beds. Channels were initially confined by steep valley walls formed along the sub-Cretaceous unconformity. As a consequence, coeval interchannel sediment (FA3) was cannibalized by lateral channel migration and occurs only as common mud-clasts. The net result was the accumulation of a sand-rich, sheet-like deposit with locally-preserved fine-grained interchannel deposits, suggesting a high rate of lateral versus vertical accretion.

With the filling and elimination of the irregular paleotopography along the unconformity, upper-FA2 channels became unconfined and formed thick, areally extensive inclined heterolithic stratification (IHS) deposits. Similarly, coeval interchannel deposits are more widely-distributed and thickly preserved compared to underlying strata. (Abstract shortened by UMI.)</style></abstract><issue><style face="normal" font="default" size="100%">M. Sc.</style></issue><custom1><style face="normal" font="default" size="100%">Geology</style></custom1><custom2><style face="normal" font="default" size="100%">Fort McMurray, Lewis study area</style></custom2><custom3><style face="normal" font="default" size="100%">http://www.worldcat.org/oclc/58053872</style></custom3><custom4><style face="normal" font="default" size="100%">Science</style></custom4></record></records></xml>