GEOG 2RC3 Lecture Notes - Lecture 3: Drumlin, Great Lakes, Moraine
16 Sep 2014
School
Department
Course
Professor
Document Summary
Purpose: to examine the influence of glaciation during the pleistocene epoch on. See bone, ch. 2 esp. pp. 35-37 and vignettes 2. 3, 2. 4, 2. 5, 2. 6. Began nearly 2. 6 mya; ended 12,000 ya. Several advances (glacial periods) and retreats (interglacial periods) of continental ice sheets in northern hemisphere beginning one million years bp up to 10,000 years bp. Holocene epoch- the current period on the geologic time scale; began 10,000 years ago. Process of melting, that"s where landforms gets created. Most recent glacial period known as the wisconsin ice age which began 67,000 years ago and ended 12,500 years ago. Maximum extent of wisconsin ice sheet reached 18-25,000 years ago (see fig. Previous ice ages: illinoian, kansan, nebraskan. Scientific knowledge regarding ice ages is quite recent- early theories proposed by louis. Agassiz and charles lyell between 1830 and 1860. Darwin"s origin of species" published in 1859.
