Tuesday, June 03, 2008

Scarborough Bluffs

East of Toronto are several miles of high bluffs, apparently a slice across the front of a thick delta deposited long prior to the last glaciation. The toe of the bluffs has been largely stabilized through revetments (both of construction debris and of more of the elegant dolostone seawalls and revetments so common on the lake), groin fields, broad beach fills, and a large lake fill (Bluffers Park). Longshore drift is to the west, so erosion of these bluffs may have fed the spits and shoals that formed the natural precursors to the now heavily modified Leslie Street Spit and the Ontario Islands off the Toronto waterfront.

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