Figure 2.
Some field attributes of glacial deposits. (A) Diamictite of the Paleoproterozoic Gowganda Formation, Ontario, Canada. Note that the clasts (mostly granitic) are “floating” in a matrix of crushed rock (rock flour). Coin is 2.8 cm in diameter. (B) Finely bedded mudstones of the Paleoproterozoic Pecors Formation (Huronian) north of Elliot Lake, Ontario, with dropstones that were transported by floating glacier ice. Hammer (head 10 cm long) lies on diamictites of the glaciogenic Ramsey Lake Formation.