Geologic bedrock map of a mostly glacier covered quadrangle, northern southeastern Alaska, part of a long-term systematic effort to provide bedrock geologic and mineral-resource information for all of southeastern Alaska

We have identified six major belts and two nonbelt occurrences of plutonic rocks in Glacier Bay National Park and Preserve and characterized them on the basis of geologic mapping, igneous petrology, geochemistry, and isotopic dating. The six plutonic b