Time Frozen In Stone

Time Frozen In Stone (HM2HMM)

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N 38° 52.693', W 104° 52.86'

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Inscription

Garden of the Gods Park

This rock formation, called Sentinel Rock, is a geologic treasure. It is composed of two types of rock - a fine sandstone and a gravelly conglomerate. The various layers in this rock were deposited 275 million years ago. During that time, ancient rivers flowed out of the ancestral Rocky Mountains and sand dunes were beginning to creep across the landscape.
The ripple marks you see on this rock represent a sandstone "cast" of one stream bed layer. Alternating layers of coarse and fine gravels were deposited when streams ran with high or low energy. The fact that the streambed is now vertical shows that the rock layers were tilted upward long after the sediments were turned into solid stone.

Since assuming their vertical positions, these rocks have continued to change shapes as water freezes in cracks and wind erodes the soft sandstone into unusual, bizarre shapes. Millions of years from now, the rocks may once again be a pile of sand and pebbles.
Details
HM NumberHM2HMM
Tags
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Placed ByCity of Colorado Springs Parks, Recreation and Cultural Services
Marker ConditionNo reports yet
Date Added Friday, June 7th, 2019 at 11:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)13S E 510322 N 4303269
Decimal Degrees38.87821667, -104.88100000
Degrees and Decimal MinutesN 38° 52.693', W 104° 52.86'
Degrees, Minutes and Seconds38° 52' 41.58" N, 104° 52' 51.6" W
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Closest Postal AddressAt or near , ,
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