GGR100H1 Lecture Notes - Lecture 8: Laurentide Ice Sheet, Late Glacial, Eastern Agricultural Complex
Document Summary
Migration, routes and earliest sites: colonization of the americas. Tip of eurasian continent to tip of north american continent. Wisconsinan glaciation: major advance of north american ice sheets (mis 2) Beringia: a land bridge connecting siberia to alaska. Much lower sea level due to global glaciation. Created refugia (areas of high energy) for plants, animals and people. Thought was that people crossed beringia to follow herds. About 1000 years later, sea levels rose and that land bridge cut off, trapping people into the new. Genetic evidence and ties to north american populations. Global movement of populations to northern latitudes for the first time. North american populations descended from northeastern siberian populations. Potential back and forth movement of gene flow. Also called clovis first (based on the assumption that the clovis people were the first people) Assumes an ice free corridor from beringia (alaska) to southern canada and northern us. Movement of founder populations along pacific coast of alaska and bc.
