Abstract
Reconnaissance of eastern Ontario regions lying between the late-glacial positions of Lake Iroquois and the Champlain Sea provides new information on ice-flow patterns as represented by striae and other streamline phenomena. This is related to the distribution of ice-marginal deposits and to structurally controlled topography. Two ice lobes, Madawaska Highland lobe and Ottawa – Lake Ontario lobe, are identified, and the Oak Ridges interlobate moraine system is extended. Discussion of apparent sequences of events allows for a new working hypothesis, including the concept of a calving bay in Ottawa Valley, for the development of the Champlain Sea, and for the timing of the drainage of Lake Iroquois. It reconciles radiocarbon dates previously thought to be anomalous.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
