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Pacific NW Geologic Mapping Project

Geologic maps of the North Cascades

Kps-4. Bioturbated siltstone in transition facies between Late Cretaceous Virginian Ridge Formation of Barksdale (1975) and Winthrop Formation of Kiessling and Mahoney (1997) exposed on Gold Ridge north of Slate Peak [RMnw]. Both units are included in the Pasayten Group of Kiessling and Mahoney (1997) (Kps).
Other photos that show unit Kps:

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