USGS home Scientific Investigations Map 2940 

Pacific NW Geologic Mapping Project

Geologic maps of the North Cascades

KJh-1. View southwest from base of Cathedral Peak [RMne]. Early Cretaceous and Jurassic hornblendic rocks (KJh) including the Spanish Camp Gneiss of Hawkins (1964), and Ashnola gabbro of Daly (1912) were intruded by Early Cretaceous tonalite and gneissic tonalite of the Remmel batholith (Kor). Upper Cathedral Lake in middle ground is a glacial tarn, carved from granite of the early Late Cretaceous Cathedral batholith of Daly (1912) (Kog). At this locale the granite is faulted against the older rocks of the Remmel batholith. Qt, talus. Fault (heavy line) and contact (thin line) dashed where approximately located and dotted where concealed or hidden. View image without annotation
Previous Photo        Next Photo   

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