Zion National Park Information
Zion National Park is located in the Southwestern corner of Utah, and northwest of the city of Saint George in Washington, Kane and Iron counties.
Zion National Park
Springdale, UT 84767-1099
Contact Page: Link
Visitor Info: 435-772-3256
Job Info: 435-772-3256
Establishment of Zion National Park
Zion National park was established in 1909 as Mukuntuweap National Monument. It became Zion National Park in 1919. The name “Zion” meaning “place of refuge,” was given to the canyon by Mormon pioneers. Protected within Zion National Park’s 229 square miles (593.1 km) is a spectacular cliff-and-canyon landscape and wilderness full of the unexpected including the world’s largest arch – Kolob Arch – with a span that measures 310 feet (94.5 m).
The Zion National Monument, in the county of Washington, State of Utah, is declared to be a national park and dedicated as such for the benefit and enjoyment of the people, under the name of the Zion National Park, under which name the aforesaid national park shall be maintained by allotment of funds heretofore or hereafter appropriated for the national monuments, until such time as an independent appropriation is made therefor by Congress.
Consolidation of Zion National Park and Zion National Monument
For the purpose of combining Zion National Park and Zion National Monument, Utah, in a single National park unit, in the interest of efficient administration and to preserve adequately the features thereof, Zion National Park on and after July 11, 1956, shall comprise the present area of the National Park and the present area of the Zion National Monument: Provided, That the enactment of sections 346b to 346d of this title shall not affect adversely any valid rights or privileges heretofore existing within the areas hereby established as the Zion National Park.
Size and Visitation of Zion National Park
Zion National Park is 229 square miles / 593.1 km. Elevation’s lowest point is 3,700 feet / 1,128 meters, and highest point is 8,726 feet / 2,660 meters.
The majority of park visitors come during Spring and Fall and are lowest in December through March. Visitation in 1920 was 3,692, while visitation in 1996 it was 2.6 million
Geology of Zion National Park
Zion Canyon reveals many events of middle geologic times. The story of Zion begins where that of Grand Canyon ends and ends where that of Bryce canyon begins. The geologic records of 2 billion years are incorporated in these three park areas, all located within 120 miles of each other.
Zion National Park has witnessed many changes in landscape and climate. At times it was covered by the sea; at other times broad rivers traversed its surface; at still other times it was swept by desert winds. Many of the rocks were laid down by water as gravel, sand, mud, and limy ooze. These were consolidated into conglomerates, sandstones, shales, and limestones by the weight of layers above them and by the lime, silica, and iron that cemented the grains.
Embedded in the rocks are occasional fossil sea shells, fish, trees, snails and bones and tracks of land animals that sought flood in flood plains, in forests and among sand dunes.
Geologist divide sedimentary rocks into formations which differ from each other in such features as mineral content, extent and thickness of individual layers, and kinds of fossils. Each individual formation reveals the geography, climate, fauna and flora of its time.
The formations of Zion were laid down one above the other, in orderly succession. Seven formations are prominently displayed within the park; their edges appear along the canyon walls. The oldest, Moenkopi appears in the lowest park elevations while the youngest, the Carmel, appears at the tops of some of Zion’s lofty features. Because the layers dip gently northward, the oldest strata are exposed at the south margin of the park along the Virgin River and the youngest are exposed to the north.
The Moenkopi Formation
Along the Virgin River about 1800 feet of Moenkopi is displayed as a landscape of brightly colored bands. The highway between the towns of Virgin and Rockville, Utah, traverses successively higher beds until the top is reached at the mouth of the Parunweap Canyon. This formation is composed of many thousands of thin layers of sandstone and shale. It also contains beds of limestone and gypsum, deposited in the sea, for the most part, and on coastal plains and along inland streams. The lower third of this formation consists of oil bearing, sandy limestones and shales overlain by several hundred feet of red, brown and pink gypsum bearing sandy shales capped by a few beds of fossiliferous limestone that form a prominent cliff. The upper two thirds consists of strongly colored red sandy shales that include as a middle diversion the remarkable group of gray, white, pink, and soft gypsiferous beds known as the Shnabkaib Shale member.
After Moenkopi sediments had been deposited in the sea and along its borders they were partially removed by erosion, resulting in an uneven surface on which the sands and gravels of the succeeding Shinarump were laid down. The irregular contact between the two formations is apparent between the towns of Rockville and Grafton.
The Chinle Formation
Resting on the Moenkopi is the Shinarump conglomerate, the lower of the Chinle formation. Although less than 100 feet thick, the Shinarump is a prominent cliff maker. It is the caprock of sloping walls at the mouth of the Parunuweap Canyon. It forms the caplike mesas on both sides of the Virgin River at Huber Wash and Coalpits Wash. The Shinarump consists chiefly of white, gray, and brown conglomerate; coarse sandstone; thin, short lenses of fine colored sandy shale; and fossil wood. The dominant pebbles, well rounded, clouded and translucent, are white, yellow, and gray quartz; red, brown, and white quartz rock composed of firmly cemented quartz grains; and blue-gray limestone.
Locally, cavities in the fossil wood contain yellow carnotite or other uranium minerals. The space between pebbles are filled with iron and manganese oxides and copper sulfide. The formation is typically displayed in the cliffs at Rockville.
Petrified wood is contained in the Chinle, along with marvelous assemblages of shales, soft sandstones, weathered volcanic ash, and many kinds of calcareous rocks colored with bands, streaks, and irregular blotches of yellow, lavender, purple, pink, lilac, ash gray and various shades of red, blue and brown. These are the most richly colored beds in Utah.
The Moenave Formation
Above the Chinle, the Moenave formation consists of two divisions, the lower, slope forming unit called the Dinosaur Canyon Sandstone member and an upper, cliff forming unit called the Springdale Sandstone member. The Dinosaur Canyon member ranges from 140 to 375 feet thick and consists of thin, interbedded siltstone, mudstone and fine sandstone beds that maintain a regularity of thickness over quite a distance. This regularity, plus the fish skeletal parts and scales found in them, led geologists to conclude that the beds were deposited in a lake. Some lake waters became shallow and disappeared.
The overlying Springdale Sandstone member forms almost vertical cliffs 75 to 150 feet high. It is a pale reddish brown. The Springdale Sandstone is mostly stream deposits.
The Kayenta Formation
The Kayenta forms a shelving slope worn chiefly on thin, maroon colored sandstone. The sediments that comprise the Kayenta were deposited upon the Moenvae by intermittent streams.
The Navajo Sandstone
Resting upon the Kayenta, the Navajo Sandstone (White Cliffs) is the most visible of Zion’s formations. From it the temples and towers, the cliffs and canyon walls have been carved. They make Zion National Park unique. The Navajo is basically a huge mass of remarkably homogeneous, fine grained, friable sandstone, laid down about 170 million years ago. Usually the lower half of the Navajo is light red, and the upper half is light tan. Fully 98 percent of the Navajo consists of rounded grains of translucent quartz, many of them frosted and wind etched. The grains are held together by lime, iron oxides and claylike substance, but the cement is weak and the rock is remarkably porous and friable (crumbly).
The Temple Cap Formation
For a brief period after the Navajo desert sands had been deposited, flood waters carried red muds over the dunes. The climate returned to more desert like conditions. The Temple Cap formation is recorded in a thin layer of clay and slit, the source of the red streaking that stains the upper faces of the Navajo Sandstone that lie directly below, such as the Altar of Sacrifice. It is also apparent in the thick sandstone layer that forms the caprock of West Temple and East Temple.
The Carmel Formation
The thin resistant Carmel is the youngest of the formations that are exposed within the park. Carmel is composed of hard, compact limestone in groups of beds one to four feet thick. Bedding and composition reveal that Carmel originated as silts deposited in a shallow sea, and abundant fossils fix its age at about 145 million years. This widespread formation appears in isolated remnants atop West Temple and East Temple, and extensively upon Horse Pasture Plateau and many mesas on Kolob Terrace.
Improbable as it may seem, the evidence clearly reveals that Zion Canyon is the result chiefly of the work of the Virgin River. The Virgin River’s tranquil beauty and life giving waters belie the tremendous power by which it has sliced through ageless rock layers to carve Zion Canyon.
Flora and Animals
A desert (actually an upper extension of the broad Mojave desert) penetrates much of the lower canyon levels. Yet, amidst this aridity, the moisture provided by streams and springs supports relatively lush communities of plants and a wide diversity of wildlife.
Flora in Zion National Park
Zion National Park, with both hanging gardens and dry, sun drenched slopes has the richest diversity of plants in Utah with almost 800 native species. At the right season, small clusters of shooting stars, monkey flowers, larkspurs, miner’s lettuce, evening primrose and, surprisingly, an occasional orchard will bloom.
On the dry slopes, where the sun has baked the earth and drawn from the soil and air almost all of the moisture that may have been present, the opposite is true. No moist greenery here, instead there are shrub live oak, low grayish junipers, an occasional pinyon pine, and at ground level, sparse clumps of bunchgrasses and a few scattered low shrubs, globe mallow and squawbush.
The spring cycle begins in March or April with the blooming of sand buttercup, chorispora, and early Indian paintbrush. Early May is the time for the violet, orchid, pentstemon, sego lily and in shady nooks, the columbine and monkey flower. During the excessive heat of the summer, day blooming plants are largely replaced by such night blooming species as evening primrose, four o’clock, spiderwort and the glorious sacred datura, a veritable “moonlight garden”.
During the late summer cycle, Zion’s roads and trails lead through fields of asters, sunflowers, bee flowers, Wyoming paintbrush and sweet clover. The cool shady nooks are made more brilliant by the present of the cardinal flower.
On the floors of the canyons, groves of box elder, willow, cottonwood and ash grow where water tables lie close to the surface. Above them on the talus slopes and here and there in cracks on towering walls, grow juniper, pinyon pine, live oak and manzanita. On the Kolob Terrace above the canyon walls at the elevation of about 7,000 feet, ponderosa pine, white fir, Douglas fir and quaking aspen are the dominant species. Yuccas grow high on the rim, while damp niches provide suitable locations for ferns and other plants that normally prefer cooler climates.
Animals in Zion National Park
There are more than 285 species of birds recorded in Zion National Park. These birds range from typical desert dwellers such as the greater roadrunner, rock wren, black throated sparrow, and Gambel’s quail to birds associated with water habitats such as the great blue heron and American dipper (water ouzel).
Mammal residents present an equally mixed group. The mountain lion’s natural shyness and fear of humans make actual sightings an occasion of special note, although backcountry areas such as the Kolob and Parunweap canyons support a number of these cats. Their presence is indicated by signs such as a set of tracks or the remains of an occasional kill. Mule deer on the other hand are commonly seen and are associated with the mountain lion in a prey predator relationship. There is also the presence of the desert cottontail, striped and spotted skunks, mountain vole and water shrew.
A strong nocturnal creature, the ring tailed cat is rarely sighted. The gray fox lives in much the same territory as the ring tailed cat and shares its food habitat. It is rare that two kinds of animals so similar in their habits as these overlap so closely in range. Usually when such overlap occurs, one will force the other out. In this case, when their activities are viewed and a third dimension is considered, it is found that the ringtail, its limbs and toes well adapted for moving both up and down tree trunks, an excellent climber, often forages at a high level. While the gray fox, although able to climb trees, is principally a ground dweller and rarely looks elsewhere for its livelihood.
Banded geckos, tiger salamanders, canyon tree frogs and desert horned lizards are representatives of an abundant population of reptiles and amphibians. The western rattlesnake may make an occasional appearance.
Unique among the park animals and the Zion snails, invertebrates that have become adapted to a moist niche in the desert at Zion, and are only found on wet walls of the sheer cliffs along the Virgin River Narrow.
Commonly seen animals include mule deer, rock squirrels, lizards, and many species of song birds. Rare or endangered species include peregrine falcons, mountain lions and some species, like the Zion snail, found nowhere else on earth.
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