USGS home Scientific Investigations Map 2940 

KJn-2. Volcanic grit with rounded and flattened dacite pebbles, basal Wells Creek Volcanic Member (KJnw) of the Nooksack Formation (KJn), north of Rainbow Glacier [MBnw] on the northeast side of Mount Baker.
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Photo Indices: Captions (Additional photos home) | Map | Young rocks and deposits | Older rocks west | Older rocks east