Please take a moment to review Hachette Book Group's updated Privacy Policy: read the updated policy here.

Marcia Bjornerud
Marcia Bjornerud is a Professor and Chair of Geology at Lawrence University. She is a Fellow of the Geographical Society of America, and was a 2000-2001 Fulbright Scholar. She lives in Appleton, Wisconsin.
By clicking ‘Sign Up,’ I acknowledge that I have read and agree to Hachette Book Group’s Privacy Policy and Terms of Use