Database for the Geologic Map of Three Sisters Volcanic Cluster, Cascade Range, Oregon
A database of geologic map of Three Sisters Volcanic Cluster as described in the original abstract:
The geologic map represents part of a late Quaternary volcanic field within which scores of eruptions have taken place over the last 50,000 years, some as recently as ~1,500 years ago.  No rocks of early Pleistocene (or …