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Pacific NW Geologic Mapping Project

Geologic maps of the North Cascades

TKgo-3. View northeast towards Eldorado Peak [MBse] from Sibley Creek Pass, west of The Trident. In foreground, metaconglomerate of middle Eocene to Late Cretaceous Cascade River Schist (TKcs) contains cobbles (deposited in Triassic) stretched to form streaks. Orthogneiss of Eldorado pluton (TKgo) visible in background. Small glaciers and moraine deposits (Qag) in valley are visible behind geologist. This photo is figure 17 in the accompanying report (sheet 2). For a better view of metaconglomerate, see photo TKcs-1. Photographed in 1985.
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