PROTEROZOIC

KINTLA 860'+ Red argillite

SHEPARD 600' Buff limestone

PURCELL 250' Black lava

SIYEH 4000' Dark diorite bordered by white altered

limestone

Blue limestone. Weathers buff

GRINNELL 1600-3000' Red argillite and white quartzite

APPEKUNNY 2500'± Green argillite. Some white quartzite

ALTYN 2300'± Gray limestone. Weathers buff

The Geologic Story of Glacier National Park · 第 12 / 24 题