The Lake
Bill Rose

La Niña? Latest         Bibliography             Keweenaw Geoheritage     

                               Cold Water and High Ice Cover: EOS 26 Aug 


The influence of the huge lake on nearby people’s lives is monumental, but unappreciated by many. Many things play out with the weather and climate elements: temperature, winds, rain and snow, clouds.  Other influences are intangible, such as inspirational and spiritual ones. The lake is so large it is like an ocean in most ways, yet it is located almost in the very center of a great continent--this is a profound geoenvironmental determinant:  A large lake centered within a large continent.

Lake Superior--what does it mean?


Why are the great lakes here? Their shape is closely related to glacial episodes and moraines left by the most recent retreat (Larson and Schaetzl, 2001).  But Lake Superior’s size and location is also coincident with the basin formed by the Keweenaw Rift, more than 1 billion years ago. Lakes and especially large ones are rare and do not survive very long.  The Great Lakes area is also marked by many smaller lakes, which is quite unlike other non-glaciated parts of the continent.

Great Lakes Links

       Field Scope Guide

                                Field Scope

Great Lakes Science Center

Introduction to the Great Lakes

EPA Atlas: Great Lakes

Lake Superior Resources

Coast Watch: Superior

Lake Superior Overview

Lake Superior Facts & Figures

Origin of Lakes

Formation of Great Lakes


GeoElements of Michigan’s Keweenaw:
Lavas    Sandstone    Fault    Glaciers    Lake

Jesuit Map 1670-71