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HARTMAN MULTIMEDIA
Nature Based Multimedia Information Systems |
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Travertine Rock Area Travertine Rock is a prominent granitic outcrop arising
from the surrounding flats. During
the periods that Lake Cahuilla (see Lake
Cahuilla Beachlines) filled the Salton Basin, the rock
stood above the lake level, which is well defined here by an abrupt change of
color and rock texture on the outcrop. At
the old shoreline, waves cut the rock face and destroyed the darker desert
varnish that is clearly visible on the higher portions of the rock.
Below the old shoreline, there is a pale brown travertine, a spongelike
crust up to 75 centimeters (30 inches) thick, deposited by algae growing in the
lake. Nearby is another outcrop which was a shoal during high
water. A sand spit, now modified by
wind action, connected Travertine Rock and the shoal with the nearby steep
mountain face. Along the mountain
front are beach terraces and varicolored waterlines. The oldest known glyphs in the country, dating
approximately 9,000 years B.P., have been discovered in the area. Integrity: A
power line traverses the area and there are graffiti of varying ages. Use: Private January 1980
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