| Definition | Term |
|---|
| This many years ago the ice retreated from southern Ontario | |
| lake that covered Toronto | |
| Locally referred to as the 'mountain' | |
| Name the formation: thinly bedded, well jointed dolostone with chert | |
| Name the formation: dolomitic shale with thin bedded argillaceous dolostone | |
| Name the formation: thick, single bed of light coloured dolostone; few joints, bioturbation | |
| Name the formations: compact dolostone with minor beds of shale, basalt that contains pyrite, glauconite, casts of brachiopod | |
| Name the formation: Thick unit of grey sandstone and shale, with ripple marks and cross bedding | |
| a small overflow-type dam that slows down the velocity of the river | |
| a cage filled with rocks that prevents erosion of bank by absorbing the energy of the river flow | |
| To create an overhang by eroding lower layers of rock | |
| displacement and mixing of sediment particles by animals or plants | |
| chemical changes in a rock that occur after lithification | |
| a small cavity in a rock that occurs when calcium is replace by magnesium found in the lockport formation | |
| present in the Ancaster Member but not the Gasport member of the Lockport formation, and made of silica | |
Countries of Europe
Countries of Africa
Countries of the World
