UTAGA 2017 Spring GeoTrip
Wandering the Waterfront; Deciphering the Natural and
Anthropogenic Landscapes of the Toronto Shoreline
with Tony Davis
Our waterfront still reflects its glacial heritage. Over 130,000 years of ice advance and retreat are recorded in the Scarborough Bluffs. The city’s most prominent landform, the Lake Iroquois Shoreline reflects a history of fluctuations in the level of Lake Ontario. Glacial debris reworked by the modern lake formed the Toronto Islands.
The natural landscape has been substantially modified by human activity, particularly infilling; the extension of the lakeshore south of Front Street, the infilling of Ashbridge’s Bay, and the construction of the island airport. The largest physical feature on the Waterfront, the Leslie Street spit, is entirely anthropogenic. The urbanization of the GTA and the drastic modification of the Lower Don have changed the supply of sediment and water to the area.
We’ll start at Bluffers Park to examine the distinctive Sunnybrook Drift, mostly varved clays deposited in a deep proglacial lake. Our next stop will be the Leslie Street Spit, a 5 km structure designed originally as an eastern extension of the Toronto harbour, composed of construction debris and dredgeate. In the 60 years since construction began it has become an important wildlife sanctuary.
Our third stop will be at the eastern docks to talk about the Keating Channel and other ill-conceived manipulations of the lower Don. Time permitting we’ll then head for the Toronto Islands to consider modifications of the original features and contemporary issues (erosion, airport extension, etc.).
This Trip is organized by the University of Toronto Association of Geography Alumni (UTAGA) and is on a first come first serve basis.
Note – Please bring your own lunch.
|Saturday, May 6th : 9 am to 2 pm||Number of Participants : 45 max||Pick-up and Drop off:|
|Cost : $10.00 (to cover bus transportation) Does not include ferry ticket.|| REGISTER HERE
||Hart House, 7 Hart House Circle, University of Toronto|