Analysis
Geological exhibits and resources of the area
are spread all over the Sequoia and Kings Canyon
National Parks. The geological marvels inspire
awe and that is why millions of foreign and domestic
tourists come to this part of the United States
each year. The park is home to immense mountains,
huge trees and deep canyons.General
Sherman Tree, the world's largest tree is the
park. There are oak-studded foothills and awe-inspiring
sequoia groves. There are trails that lead to
the high-alpine wilderness, which makes up most
of these parks. Beneath the surface lie over 200
captivating caves. (Geology Fieldnotes: Sequoia
and Kings Canton National Parks 2004)
America's longest mountain range, the Sierra Nevada is located here. Mt.Whitney in the park is the tallest mountain in the contiguous United States is located here. This mountain stands 14,491 tall above the sea level. There are another eleven peaks of over 14,000 feet within the preserves of the park. In the Kings Canyon National Park the mountain range that extends toward the West of the Sierra Nevada crest is known as the Goddard and Monarch divide. The lofty peaks here are over 13,000 feet high. A second range of mountains, The Great Western Divide, runs parallel to the Sierra crest. Here the peaks are less in elevation but even then are over 12,000 feet high. These mountains are visible from the Moro Rock and the Giant Forest area. (Geology Fieldnotes: Sequoia and Kings Canton National Parks 2004)
Within the lap of these mighty peaks lie the deep, breath taking canyons. These are spectacular, majestic and cast their magic spell at first sight. The most significant canyon is the Kings Canyon. It is a glacial valley, and has beautiful waterfalls, gorges, lush green landscape and set amidst the grandeur of the upright mountain cliffs. A little distance outside the park the Canyon becomes deep, one of the deepest in the country.
The South Fork and Middle forks of the Kings River converge at 2,260 feet. On the North side of this point is the Spanish Peak. There are score of other canyons (including the Tokopah Valley above Lodgepole, Deep Canyon) and rivers ( Kaweah River, the Kern River, two forks of the Kings River).
A great majority of the mountains and canyons
are formed in the granite. As per the geologists
these rock formations (granite, diorite and monzonite)
have evolved molten rock, formed as a by-product
of a geologic process known as subduction, cooled
well below the surface of the earth. The geologists
have further theorized that powerful forces in
the earth created the landmass under the waters
of the Pacific Ocean beneath and below an advancing
North American Continent. The ultra hot water
rose from the active ocean floor and melted rock
as it went. This geological process is estimated
to have occurred a hundred million years ago.
The grantic rocks here carry a speckled salt and
pepper appearance on account of the presence of
various minerals such as quartz, feldspars and
micas. ( Geology Resources Overview, Sequoia and
Kings Canyon National Park 2004)
The Sierra Nevada range, in geological time frame,
is considered young at age ten million years!
During this period there have been four glacial
advances. These have left a thick coating of ice
behind, on these mountains. Glaciers need cool
and wet climate for their formation. The southern-most
glaciers in North America are within the Park
Range. Glaciers move through mountains a river
in ultra slow motion. Such glacier movement carves
deep canyons and rugged peaks. The extensive history
of glaciation have resulted in creation of (i)
erosion resistant granitic rocks and (ii) magnificent
scenery of beautiful valleys and peaks, waterfalls,
alpine lakes and massive glacial canyons. ( Geology
Resources Overview, Sequoia and Kings Canyon National
Park 2004)
According to the geologists the mountains are
still undergoing geological change. It is difficult
for a layman to believe but the mountains are
still gaining height during earthquakes on the
east side of the range near Bishop and Lone Pine.
When the rain and winter snows fall on the slopes
this results in massive movements of sediment
and rapid erosion. The formation and erosion are
a continuous ongoing process. The erosion has
dumps sediments, thousands of feet thick, on the
floor of the San Joaquin and Sacramento Valleys.(
Sequoia and Kings Canyon National Parks)
Parts of the park contain metamorphic (or changed) rocks, which are the remnants of volcanic islands that were added to North America before the formation of Sierra Nevada mountain range. They include unusual rocks, which in geological parlance are known as metamorphosed volcanic rocks, schist, quartzite, phyllite, and marble.
The caves or caverns as they are sometimes called, stand out as a special geographic and geological miracle and wonder. The area has over 200 caves of varying dimensions. The parkland also has caves set in the marble rocks. Marble in geological terms is metamorphosed limestone. Sequoia and Kings Canyon contain more than 200 marble caves. Caves come into being under special conditions which have as requisite the particular type of rock, fractures or spaces in the rock and enough water to erode the ground and pave way for the rooms and passages. Lilburn Cave is 17 miles in length! There are lots of different sized and styled cave formations. Most famous are the Spider Web Gate and the Soldier's Cave. Three rope ladders have to be climbed down to reach this cave’s lowest (and widest) level. One of the outstanding formations has high quality "dog-tooth spar" crystals. The large number of tourists have caused some damage to the formations. |