USGS home Scientific Investigations Map 2940 

Pacific NW Geologic Mapping Project

Geologic maps of the North Cascades

Qcav-1. View northeast from northeast side of Glacier Peak volcano [SRse]. An eroded cleaver of Glacier Peak lava (Qcav) stands above an eroded remnant of young moraine (Qag) and older tuff and breccia of Miocene Gamma Ridge caldera (QTcc). These latter deposits are capped by Pleistocene lava (Qcav) which forms Gamma Peak. Photographed in 1961. View image without annotation
Other photos that show unit Qcav:

Previous Photo        Next Photo   

Photo Indices: Captions (Additional photos home) | Map | Young rocks and deposits | Older rocks west | Older rocks east