CORE PHOTOGRAPH

Keweenawan Shale-Clast Breccia

M-1 core - 176 feet

Light gray to white clasts are devitrified melt-rock. Darker gray clasts are Keweenawan (Middle Proterozoic) shale clasts. The matrix is composed of finely brecciated clasts of both lithologies.

core is NX (1 7/8" diameter)