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Welcome
to Point of Interest Road
Signs! A
collection of photos of road and trail signs. Click
here for more Wyoming Signs
The
Teton Range
Location
of sign - Grand Teton National Park - Teton Park Road
Photo
taken May 2008
Close-up
view of sign
Wide
view of sign
Text
of sign:
The
Teton Range
Young,
Restless and Still Rising
In
Geologic Time these mountains are the energetic teenagers of the Rocky
Mountain chain: active, growing, yet sculpted by
Erosion.
The
Rise of the Range
Nine
million years ago, the earth's crust broke into two rectangular blocks along
the Teton Fault, a 40-mile-long zone of weakness.
Through
sporadic movements, the western block hinged skyward to become the Teton
Range, while the eastern block tilted
downward
to form the valley called Jackson Hole. The valley sank four times more
than the mountains rose. Displacement
continues,
and an earthquake-producing movement along the fault can occur at any time.
Shaping
the Mountain
Erosional
forces continually shape the rising mountains. Wind, water, ice and
glaciers, particularly of the last Ice Age, shaped
the
range into today's skyline. The sedimentary rock layers that covered the
central peaks have been worn away, but mountain
building
continues, counteracting erosion.
Description
of graphics on sign:
In
addition to the text the sign displays a view of the Teton Mountain range
pointing out the location of Symmetry Spire, Mt. St.
John,
Rockchuck Peak, Mt. Woodring, Thor Peak, Mt. Moran, Leigh Lake, Bivouac Peak
and Eagles Rest Peak. It also
displays
a computer generated graphic of the Tetons Range as viewed from 3500 feet
about the sign that graphically explains the
formation
of the Teton Range.
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