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Pacific NW Geologic Mapping Project

Geologic maps of the North Cascades

TKso-2. The Southern Picket Range [MBne] eroded from orthogneiss of the Skagit Gneiss Complex (TKso). Telephoto view northeast from Anderson Butte [MBsw]. Tcai, granodiorite of the Oligocene Chilliwack batholith (Cascade Magmatic Arc, Index family); Tes, sandstone of extensional deposits; Kes, Early Cretaceous Shuksan Greenschist, Shuksan nappe, Easton terrane of the Northwest Cascade System. Names in italics are informal but much used locally. Photographed in 1978. 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