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Scientific Investigations Map 2940 |
| QTcp-3. Granite of Cascade Pass family (QTcp) on the west wall of Nooksack cirque in foreground. Ruth Mountain [MBnw] to northeast is carved from volcanic breccia of Pliocene Hannegan caldera (QTcc). Both rocks formed in the Cascade Magmatic Arc. Extensive glacial moraine (Qag) covers valley floor. Contact dashed where approximately located. This photo is figure 12 in the accompanying report (sheet 2). View image with annotation |
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Other photos that show unit QTcp:
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