GSA Today
Volume 19, Number 7 (July 2009)

About the cover:
View of snow-covered peaks and cirque lake in Rocky Mountain National Park, Colorado, USA. This issue’s science article argues that snowmelt-induced flooding has played a major role in shaping the landscape of the southern Rocky Mountains in the late Cenozoic era. See “The impact of snowmelt on the late Cenozoic landscape of the southern Rocky Mountains, USA” by Jon D. Pelletier, p. 4–11.