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

Geologic Time Period

• Precambrian - 4.565 Billion Years Ago - 545 Million Years Ago (M.Y.A.) (4.6 Billion - 570)
• 1.7 Billion Years Ago
• [Boulder Creek Batholith]
• [Idaho Springs Batholith]
• [Idaho Springs Batholith - Apex Trail]
• [Apex Trail - Road Tolls]
• [Gold Strike]
• [Gold Strike]
• [Arapahoe City]
• [Arapahoe City]
• [The Sentinel]
• [The Wall]
• [The Wall]
• [The Serpent]
• [Banded Gneiss]
• [Banded Gneiss]
• [Banded Gneiss]
• [Banded Gneiss]
• [Pegmatite]
• [Pegmatite]