Jason McGill Outline Physical Geology Speech 1 Grand Canyon I. About the Grand Canyon, the history of the Canyon and Geologic Story of the Canyon A. Attracts attention of world for many reasons, but greatest significance lies in the geologic record preserved and exposed here.
1. What is unique is the variety of rocks present, clarity with which they are exposed and complex geologic story they tell.
B. Two separate stories exist at Grand Canyon 1. Older story is the one revealed in the thick sequence of rocks exposed.
a. Rock provide remarkable record of the Paleozoic Era b. Show that the rocks of the Canyon are much more older than the rocks itself.
2. Second story concerns origin of Canyon itself: when and how did it come to be? a. Erosional feature that owes it existence to the Colorado River.
b. Equal importance goes to forces of erosion that have shaped and continue to shape Canyon today.
1. i.e., running water from rain, snowmelt and tributary streams.
C. How old is the canyon itself? history and evolution of Colorado River is most complex aspect of Grand Canyon geology 1. Know that erosion shaped which has shaped canyon occurred only in the past five to six million years.
D. Lets talk about some basic facts of the canyon, as you know, the canyon is located in Colorado hovering over the Colorado River.
E. After thousands of years of Native Americans in southwest, first Europeans arrived at Canyon's South Rim in 1540 1. Following 300 years of missionaries, trappers, explorers, govt. surveyors and soldiers roaming the land, A major named John Powell and his crew made the first ever successful boat trip down to Colorado river through the canyon in 1800.
a. This triggered the drawing of visitors and businessmen alike in the late 1800's b. In 1901 the first Passenger train arrived at the canyon c. Canyon became a national monument in 1908, and on Feb. 26 1919 it was designated as the 17th national park.
F. A man named Fred Harvey had the vision of the canyon being the major tourist attraction 1. Though he died in 1901, it was his company "Fred Harvey Company" that was the principal provider of canyon visitor services.
2. This company provided better dining facilities and services then were previously available to travelers.
3. Like I said before, Harvey even convinced Sante Fe railroad to run a line from Arizona to the national wonder, which really helped businesses a lot.
G. To show how special Harvey was, it was his hiring of a gifted architect named Mary Colter, a perfectionist in a male dominated work place, that changed that face of the canyon forever 1. Colter's works included the Hopi House, Lookout Studio, Phantom ranch, Desert View watchtower, and Bright Angel lodge. All were made in the span of 1905 to 1935 and still stand today.
H. In 1968 Amtac purchased FHC, Amtac is recognized as the largest parks management company in the country, located in Denver, Colorado I. Today 5 million people visit the Grand Canyon yearly.
II. Human history A. A professional archaeologist believe that for times reach far to 3000 to 4000 years the desert Archaic people lived within the canyon 1. One way they knew was that people in that time drew pictographs.
B. Desert Archaic seemed to vanish about 1000 B.C. possibly slowly blending their culture with the next group of Indians, the Anasazi 1.Anasazi had already occupied lands east of the canyon for 600 years, before drifting to the canyon by 500 A.D.
C. By 800 A.D. Anasazi started entering a phase known as Pueblo, they probably lived there as early as 1200's 1.Spaniards Francisco Vasquez de Coronado's expedition in 1540 as said earlier brought the first white men to discover the canyon.
a. Mapped region and wrote of it 2. Eventually other trappers and Indians ventured across it in the early 1800's D. By 1800's number of livestock companies were developing canyon by Arizona 1. By 1800's it was there were over 100,000 head of...
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