Scientific Investigations Map 2940
Pacific NW Geologic Mapping Project
Geologic maps of the North Cascades
JTrc
-1. Cultus Formation of Brown and others (1987) (
JTrc
) of the Chilliwack River terrane. Typical outcrop of finely laminated tuffaceous argillite near Canadian border, north of Bald Lake [MBnw].
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Young rocks and deposits
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Older rocks west
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Older rocks east
