1. Grand Canyon National Park By: AJ Nash

2. Welcome!!! To all members of the National Geologic Society. If you are a geologist looking for the opportunity to observe and analyze rock formations dating Millions of years ago, you must come and see the splendor of the Grand Canyon National Park.

3. What year did the park become official and why? The park became an official National Park in 1919 by an Act of Congress to allow future generations to enjoy it and also to recognize its scientific value.

4. How was the park formed? A number of forces contributed to the formation of the Grand Canyon. These forces include erosion by water, ice and wind. Other forces include the course of the Colorado river, continental drift and variations of the earths orbit. Liquid water does not absorb into the hard desert soil moving down into the Colorado River.

5. Canyon Formation--Continued Floods cause large boulders to move. In cold months, water seeped into rock cracks forming ice. The ice expanded and pushed the rocks apart. The Colorado River cause erosion of the rocks. The northern plate of the earth’s crust collided with the pacific plate causing water to rise, mountain ranges to form and minerals to be deposited.

6. What types of rocks can be found in the Grand Canyon?  The walls of the Grand Canyon contain rocks from the Paleozoic Era 550-250 Million years ago. There are also Precambrian rocks as old as two million years at the bottom of the canyon.  Different rock layers contain the following types of rocks: Shale, Mud stones, basalts, sandstone and limestone.

7. What types of landforms or features are found in the Canyon? The most complete sequences of sedimentary rock layers which range in age to 200 million to 2 billion years old. The Colorado River formed 4 plaques. There are huge lakes that form from the Colorado River. The Glen Canyon Dam The Havasupai Indian Reservation

8. How is the land inside the park currently changing? Climate changes Wind Erosion Water erosion All continue to affect the rock formations of the park.

9. What environmental issues are affecting the park? Air Quality Nearby Mining Operations Loss of Native Fish Species (4 of 8 disappeared)

10. How is technology used to help preserve and maintain the Park? The School of Geological Science from AZ. State University used three dimensional computer models to predict how sand bars are rebuilt as a result of water flows in the canyon. The purpose was to help protect fragile environments downstream of the dam and reconstruct some of the Canyon’s beaches and sandbars.

11. Map

12. Pictures

13. My Canyon Photos

14. Rock Formation Picture

15. Bibliography http://www.answers.yahoo.com/question/index?qid=2007o423165212aavxaru http://artsedge.kennedy-center.org/content/2257/ http://www.bobspixels.com/kaibab.org/geology/gc_geol.htn http://www.images. Google http://www.grandcanyon.National-Parks.com/info.htm http://www.grandcanyontrust.org/grand-canyon/index.php http://www.mongabay.com/external/grand_canyon_trouble.htm http://www.sciencedaily.com/release/2008/03/080306184249.htm http://wikitravel.org/en/GrandCanyon