YOSEMITE NATIONAL PARK By Andrew Dietz Welcome to Yosemite! welcome to Yosemite national park! Here we have Yosemite valley, hiking trails, grueling rock climbing, and beautiful sequoia groves. I hope your stay is a good one! Formation of the area one factor that helped shape Yosemite is the fact that sediment deposited in shallow water and those rocks where metamorphosed. Another factor is the history of volcanic activity. Also, movement along the sierra fault caused sierra Nevada to uplift which created the many dome shaped or otherwise rock formations. In addition the Sherwin glaciers played a part in the shaping of Yosemite valley uplift and erosion are still happening today Becoming a national park Yosemite's grant was signed on June 30, 1864 by president Abraham Lincoln.this was the first instance of a park being set aside for preservation and public use by the U.S. government. Rocks in Yosemite there are many different rocks found in Yosemite like metamorphosed igneous, granite, sedimentary. Since there was volcanic activity, there was igneous rock which was then metamorphosed. the sedimentary was helped by the Sherwin glaciers that also helped form Yosemite valley. Features the most famous features of Yosemite is Yosemite valley. It was created from glacial carving. Another prominent feature is El Capitan, a large, mainly granite cliff. It is very popular with rock climbers. There are also large granite domes. One of the most majestic features is the groves of ancient sequoias. and have you seen mt. Lyell? Maps Fun Facts the only technology that Yosemite uses to preserve the wildlife and plants is roads and designated camp zones One of the biggest problems facing Yosemite is air pollution bibliography http://www.pickatrail.com/sun/y/america/topo_map/yosemite/ map.htmlhttp://pics2.city-data.com/city/maps5/frt6766.png http://mysierramountaintimes.com/wpcontent/uploads/2008/09/2008_9-5_27.jpg nhttp://www.nps.gov/yose/index.htm Wikipedia.org Site found with Google images including the 3 at the top Yosemite national park (book) New world encyclopedia.com