Bethany Hills, Omemee Esker And Fleetwood Creek

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Bethany Hills, Omemee Esker And Fleetwood Creek

Stop 2: Glacial Lake Peterborough

Glacial Lake Peterborough had many attributing spillways attached to it, feeding meltwater and sediment from the ice margin and or other glacial lakes. Much of the sediment that was deposited in Glacial Lake Peterborough came from either from the stagnant ice blocks located on the Oak Ridges moraine or from the Lake Algonquin drainage system. Much of the deposition in this lake was dominated by sediment stratification, which may have been largely influenced by thermal stratification. As a result of thermal stratification occurring in this glacial lake sediment inputs were greatly influenced depending on the different sediment densities between the lake bottom water to that of the incoming meltwater and if the inflow density was less/more than the bottom water than the lake water bottom, than new transport and depositional paths were created
Depending on the type of path that was created, it would largely influence the rate and distance to which the sediment was transported.

Stop 3a: Kettleby Till

The Kettleby till is considered to be younger than the main till in the area because it may have been deposited by ice contact stratified drift. Ice contact stratified drift is normally deposited by meltwater in contact and or in close proximity to the ice sheet. Stratification and some sorting do takes place.

Stop 3B: Bethany Hills Deltaic sands on southern Flank

Yes this feature is the result of erosion and depositional processes however, it is not associated with the current water course. This feature may be the result of a Gilbert type delta that once occupied this area. Gilbert type deltas have three main components; topsets, foresets and bottomsets. Topsets are fluvial sediments (primarily sandur deposits) that were deposited on the subaerial delta surface. Erosive events occurring on the upper forslope can result in downslope channels and chutes. These features are then eroded by either strong currents...
  • Submitted by: pinhole
  • Date Submitted: 04/14/2005 10:32 AM
  • Category: Science
  • Words: 950
  • Pages: 4
  • Views: 377
  • Rank: 161991

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