Sedimentology and history of deglaciation in the Dryden, Ontario are, and their bearing on the history of Lake Agassiz

dc.contributor.authorWarman, Timothy A.en_US Sciencesen_US of Science (M.Sc.)en_US
dc.description.abstractThe goals of this study were to determine the nature of unconsolidated sediments in the area, to determine the sedimentary processes responsible for these deposits, and to then re-examine the deglaciation history of the area, including the history of Lake Agassiz. It has been recognized that moraines in the Dryden area are composed of sorted and stratified materials displaying abundant sedimentary structures indicating deposition by flowing water. This differs significantly from the composition implied by most moraine models which tend to envisage moraines as being composed mainly of unstratified, unsorted "till", which has been piled up at a stationary ice margin by slumping, bulldozing, and/or glaciotectonic thrusting. Thus, a careful examination of the moraines in the area (the Eagle- Finlayson and Hartman moraines) was undertaken. The relationship between the large, coarse-grained end moraines, and the finer, rhythmically-laminated sediments (rhythmites) associated with them was also examined. These rhythmites had previously been studied by Rittenhouse (1933, 1934), and interpreted as varves. Varve chronologies based on this interpretation have been devised not only for the Dryden area, but for other locations in northwestem Ontario...en_US
dc.format.extentx, 256 leaves :en_US
dc.format.extent25049877 bytes
dc.rightsopen accessen_US
dc.rightsThe reproduction of this thesis has been made available by authority of the copyright owner solely for the purpose of private study and research, and may only be reproduced and copied as permitted by copyright laws or with express written authorization from the copyright owner.en_US
dc.titleSedimentology and history of deglaciation in the Dryden, Ontario are, and their bearing on the history of Lake Agassizen_US
dc.typemaster thesisen_US
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