Glaciers at the Gate

Glaciers at the Gate (HM1K1V)

Location: YOSEMITE NATIONAL PARK, CA 95389 Mariposa County
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Country: United States of America
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N 37° 43.218', W 119° 38.943'

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Inscription
Geologic processes that created Yosemite Valley include glaciation, erosion, rockfalls, and earthquakes. Most of these processes are still at work here, shaping and reshaping the land. Ancient glaciers have left dramatic geologic evidence virtually everywhere in Yosemite Valley.

Take it for Granite
Yosemite's awe-inspiring granite formation have made the park world famous. Samples of most of Yosemite's sixteen types of granite have been carried to this area by glaciers.

Several of Yosemite's granites are visible nearby where the road cuts through the "terminal moraine," the mass of debris left behind after the glacier retreated.

After millions of years of uplift and cutting by the Merced River, at the onset of the Ice Age Yosemite Valley was 3,000 feet deep.

One or more glaciers filled the Valley to its brim between 250,000 and 1,000,000 years ago. The Valley was gouged into a U-shaped trough. About 30,000 years ago, a thinner glacier advanced to today's "Gates of the Valley." When this glacier melted, its terminal moraine dammed the Valley, creating a shallow lake. This lake eventually filled with sediment, leaving today's level Valley floor.
Details
HM NumberHM1K1V
Tags
Placed ByYosemite Fund
Marker ConditionNo reports yet
Date Added Sunday, April 19th, 2015 at 6:03pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)11S E 266518 N 4178086
Decimal Degrees37.72030000, -119.64905000
Degrees and Decimal MinutesN 37° 43.218', W 119° 38.943'
Degrees, Minutes and Seconds37° 43' 13.08" N, 119° 38' 56.58" W
Driving DirectionsGoogle Maps
Area Code(s)209
Which side of the road?Marker is on the right when traveling West
Closest Postal AddressAt or near Southside Dr, YOSEMITE NATIONAL PARK CA 95389, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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