A Geological Tour of Denver, Golden, and Colorado's Front Range

A Theory | Seven Nations | Governments and Empires | Geological Past

Geologic Time Period

The Idaho Springs Batholith

Intrusion of milky (white) quartz along Chimney Gulch Trail

Intrusion of milky (white) quartz along Chimney Gulch Trail. Cooling was slow enough to allow the quartz to form large crystals as a form of pegmatite.

A Geological Tour of Denver, Golden, and Colorado's Front Range

Geologic Time Period

The Idaho Springs Batholith

Chimney Gulch Trail (Idaho Springs Batholith)