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Notice how even deep time can fly in proper perspective: The Precambrian was admittedly a slow start, taking until mid-evening to unfold on our day of creation, but then life as we know it appeared only in the last 3 hours.The entire Mesozoic Era (295 Ma long) shot by in under an hour, the dinosaurs departed just 20 minutes ago (thank goodness), and we've been comfy and relatively ice-free for only a mere 0.2 seconds.Over a few Ma, fingernail speed is plenty fast enough to fold great thicknesses of sedimentary rock over the east edge of the relatively brittle Front Range basement block, as in the photo at right.Over 50 Ma, an entire mountain range like the Ancestral Rockies can rise up and vanish.Colorado's story still includes many gaps and controversies, often around events and structures shrouded in deep time, deep earth or both.
My piano tuner's job security rests on the fact that properly tuned piano wire flows (stretches) at a similar rate and falls out of tune in a matter of months.
The places they look typically include clubs and bars; shopping malls; the Internet; the work place, sporting events and the church of their choice.
Geologic understanding requires careful attention to time as well as three-dimensional space, so we'd better stop here first.
Conversely, 1 Ga takes 4 hours, 20 minutes out of the day; 1 Ma, 19.2 seconds; and 1 Ka, 19.2 millisecondsliterally the blink of an eye.
After an introductory section, Colorado's geologic history will unfold in chronological order below.