The Hoodoos
of Bryce Canyon
Bryce
Canyon in southern Utah (Copyright Lee
Krystek, 2004)
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This strange and unique landscape has been carved
into haunting, colorful artwork by nature's powerful sculpture
chisel, erosion.
It's nowhere near as large or deep as the Grand
Canyon. Nor does it have the soaring massive mountain peaks that
line the walls of Zion Canyon. However, this area of southern
Utah has amazing rock formations not seen at either of its more
famous neighbors. Rock formations so unusual and colorful that
they are not really duplicated anywhere else on the entire planet.
Bryce Canyon is not really a canyon at all. It is
more correctly an ampitheater cut ino the edge of a plateau by
the work of wind and rain. This bowl-shaped area is three miles
long, two miles wide and about 1,000 feet deep. Running out from
the plateau rim are countless, tall, red-stone formations that
stand up like sentinels. Some are connected as sharp ridges; others
have broken away from the rest and stand alone. Erosion has sculptured
these formations into fantastic shapes that resemble the work
of a surrealist artist.
Before Europeans came to the region a Native American
tribe, the Paiute, lived in the area. They gave the "canyon" several
colorful names including Anka-tompi-wawitz-pokitch, which means
"many red rocks in a hole" and Anka-ka-was-a-wits which translates
to "red painted faces." Perhaps the most fitting, though, translated
to "bowl-shaped canyon filled with red rocks standing up like
men."
Nobody is exactly sure who the first Europeans were
that visited the canyon, but government survey parties described
the canyon in several reports between 1870 and 1876. In one of
the reports, surveyor T.C. Baily observed that it looked like:
…thousands of colored rocks resembling sentinels
on the walls of castles…This is the wildest and most wonderful
scene that the eye of man ever beheld.
In 1875 a Mormon pioneer named Ebenezer Bryce and
his wife Mary were sent to help settle the area. Bryce located
his farm just below the ampitheater. It is said that Bryce, on
seeing the canyon with its maze of high, sharp walls, observed,
"It would be a terrible place to lose a cow!" Bryce's neighbors
took to referring to the area with the strange red rocks as "Bryce's
Canyon" and the name stuck, though Bryce only lived there for
five years. In 1923 the area was made into a national monument
and in 1928 a national park. The park also bears Bryce's name.
Geology
The unusual rock formations at Bryce are the result
of the unique geological history. The story starts about 144 million
years ago during the Cretaceous Period. At that time, a shallow
sea covered the region. Great marine reptiles, relatives of the
dinosaurs living on land, made this area their home. Their fossils
can still be found embedded in the rocks laid down during this
period. Over millions of years layers of mud and silt collected
on the bottom of this sea. The layers varied in thickness and
composition as the sea repeatedly entered the area and retreated.
The dull, brown material laid down during this era makes up the
canyon floor.
During
the Tertiary Period, between 66 and 40 million years ago, highlands
to the west eroded, and the dirt that flowed into the sea was
rich with iron ore. This caused the sediments being deposited
on the bottom to also become iron-rich. After millions of years
this material was compressed into a type of rock called sandstone.
When exposed to the erosion, the iron in the sandstone would rust
and give the rock a pinkish color. These layers of rock would
be named the Claron Formation and are the layers that make up
Bryce's fantastic formations.
Over time pressures below the earth forced portions
of the old sea bottom upward on an angle to form what's now known
as the High Plateaus of Utah. The highest point in the park at
the southern tip of the Paunsaugunt Plateau now has an altitude
of over 9,000 feet. The top of the plateau is at an angle and
drops to around 8,000 feet at the northern end. It is below the
eastern rim of this section of the plateau that the pink cliffs
that form Bryce Canyon can be found.
Erosion is the artist responsible for carving the
canyon's fantastically-shaped pillars which are known as hoodoos.
Water can seep into cracks in the rock and dissolve the natural
cement that bonds the rock particles together. Later, rains can
wash away those particles and they wash down the canyon acting
like sandpaper to further erode the rock. Also, during the winter
if water gets into cracks in the rock it can freeze, splitting
the stone apart.
Conditions along the rim of a canyon are optimal
for the work of erosion. Water racing down the steep slopes finds
natural fault lines in the rock that are widened into gullies.
The harder rock on either side of the gullies turns into fins.
These fins are then subjected to erosion themselves which turns
them into tall sets of connected natural columns. Since the layers
of which the rocks are formed vary in hardness, lower portions
of the columns may erode faster than upper sections, giving them
their strange shapes. A fin will eventually have vertical cracks
appear in it that may go completely through the rock to create
a window or arch. When the window grows big enough to separate
a single pillar from the rest of the fin, a solitary hoodoo is
formed.
Castles
& Queens
The fins and hoodoos act like a Rorschach Test and
people can find any number of shapes in the rocks. A number of
them have been named for castles - Fairy Castle, Queen's Castle,
and Oastler Castle. Another is thought to look like a giant pipe
organ. At the end of one trail an area named the "Queens Garden"
is a hoodoo said to look like Queen Victoria.
The Queen's Garden
is made of Claron Formation sandstone. (Copyright
Lee Krystek, 2004).
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Visitors can hike a number of trails through the
canyon that give them a perspective that cannot be gained from
the rim. The trails wind around the fins and hoodoos so that they
tower above the hikers. Unlike the hiking in the Grand Canyon
where a half-hour walk will barely take a hiker below the rim,
thirty minutes is sufficient to reach much of the floor of Bryce.
Visitors should not be lulled into forgetting hiking precautions,
however. It is important to stay on marked trails, bring water,
and be prepared to have to rest frequently on the way up. The
altitude, (8,000 feet) can make climbing back out quite an effort.
The hoodoos of Bryce Canyon continue to erode and
change. Wind and rain removed approximately the thickness of a
sheet of paper from them each year. In 10,000 years, Bryce Canyon
will look significantly different than it does today. Eventually
the forces of erosion, which work very slowly, but surely, will
wash away the whole ampitheather. That won't happen for millions
of years, however. There's plenty of time to travel to this unique
geological region and visit with the hoodoos.
A Partial Bibliography
Geology
Fieldnotes: Bryce Canyon, National Park Service, http://www2.nature.nps.gov/geology/parks/brca/
Our Country's National Parks, by Irving
Robert Melbo, Bobbs-Merrill Company, Inc., 1960.
Copyright
Lee Krystek, 2005. All Rights Reserved