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Pacific NW Geologic Mapping Project

Geologic maps of the North Cascades

Kog-1. View southwest from base of Cathedral Peak [RMne]. Upper Cathedral Lake in middle ground is a glacial tarn, carved from granite of the early Late Cretaceous Cathedral batholith of Daly (1912) (Kog). The granite is faulted against somewhat older Early Cretaceous tonalite and gneissic tonalite of the Remmel batholith (Kor). Remmel magmas intruded Early Cretaceous and Jurassic hornblendic rocks (KJh). Qt, talus. Fault (heavy line) and contact (thin line) dashed where approximately located and dotted where concealed or hidden. View image without annotation
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Photo Indices: Captions (Additional photos home) | Map | Young rocks and deposits | Older rocks west | Older rocks east