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The Petrified Forest National Park

The Petrified Forest National Park. By: Marshall. The Park’s Founding.

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The Petrified Forest National Park

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  1. The Petrified Forest National Park By: Marshall

  2. The Park’s Founding The Petrified Forest National Monument was createdDecember8, 1906 through a proclamation by Teddy Roosevelt. After a time of using the wood for souvenirs and creating other objects, it was realized that the petrified wood was not an endless supply. So, Teddy Roosevelt declared it a National Monument to protect the area. 1000 hectares more of the Painted Desert was added to the Monument in 1932. It became a National Park in 1962. In 1970, 20,250 hectares were further added to the Park as wilderness. It was made a National Park originally to protect some of the most beautiful large groups of petrified wood in the world. The Painted Desert is protected because it is so easy to disturb the layers of sediment with even just a footprint.

  3. Earth Science: The Park’s Formation The Petrified Forest National Park was created because trees from the Triassic Period had fallen and been covered by silt and mud, and been washed for millions of years by mineral rich ground waters. The silica in the water crystallized into quartz, and the logs were preserved as petrified wood. The Painted Desert is an area of flat mesas and high topped tableland. Over millions of years, the same mineral-rich waters rose and then sank many times, creating many layers of different colors of earth. High winds erode the sediment, allowing the park to have the multi-colored formations of ground. The oxides of iron and hematite create the red, pink and orange layers. Floods could create rapid sediment buildup, which made blue, gray and lavender layers. All of the land is very easily disturbed, where even a footprint or a slight earthquake can cause damage. Petrified Wood

  4. Rocks in The Petrified Forest National Park The Petrified Forest National Park has several common types of rocks in the park. Sedimentary rocks like mudstones, siltstones, sandstones, shales and conglomerates are there. Basalt and igneous rock is in the park. Minerals like quartz (silicon dioxide), iron ores like limonite and hematite, a selenite called crystalline gypsum, and calcite are found there, too. The petrified trees have quartz and crystalline silicate in them. silicate

  5. Landforms in The Petrified Forest National Park The Park has two special landforms. The Chinle Formation is older, and is made up of river related deposits. The layers of the Chinle formation are, oldest to youngest, the Mesa Redondo, Blue Mesa, Sonsela, Petrified Forest, and Owl Rock. The Mesa Redondo is at the bottom,and is reddish sandstone. Blue Mesa is next to the bottom and has thick mudstone layers of blue, gray, purple and green. The Petrified Forest Member is thick layers of reddish mudstone and brown sandstone. The Owl Rock is made up of pinkish-orange mudstones mixed with thin layers of limestone. The other special landform in the park is the Bidahochi Formation. This formation is 4 to 8 million years old. Lake-related sediment like silt and clay compose the lower part of the formation. Ground-down volcanic ash creates the scoria cones and maars, which make up the rest of the land formation of Bidahochi. The Chinle and Bidahochi Formations

  6. The Land is Changing The Petrified Forest National Park land is changing by the accumulation of sand and dirt from formations eroding and water carrying new deposits around. The soil from deposits can allows shortgrass prairie grassland to grow. The Little Colorado river is cutting paths in the Chinle and Bidahochi formations. Clay from the Chinle Formation is washing up as land, and does not allow plants to grow. Heavy rains can take away up to ¼ inch of rock a year. Sandstone drawings A dry riverbed

  7. Environmental Issues Environmental issues at the park are the destruction of the shortgrass prairie by invasive non-native species of plants. Russian thistle and tamarisk are invasive plants introduced by humans to the park. They choke off native plant species which the ecosystem relies on to survive. Also, petrified wood is stolen from the park every year by humans. Grasslands at the rim of the Painted Desert Russian Thistle

  8. Technological Preservation The Petrified Forest uses no special technology to keep it running stably. Its natural processes take their effect on the park. Simple technology is used to monitor the park, to keep away wood thieves, and to educate the visitors. Triassic Period

  9. Maps Locations within park Relief map

  10. Works Cited Petrified Forest: A Student's Guide. US Department of the Interior: National Park Service, 2003. Print. Petrified Forest: Geology and the Painted Desert. US Department of the Interior: National Park Service, 2008. Print. "Petrified Forest National Park Information Page." Petrified Forest National Park. US Department of the Interior. Web. 28 Mar. 2010. <http://www.petrified.forest.national-park.com/info.htm>. Petrified Forest: Trees to Stone. US Department of the Interior: National Park Service, 2006. Print.

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