THE COLORADO CANYON:
(Arizona, USA)

:

Is Itlocated in Arizona, United States, in the Great Canyon National park.

The Colorado River crosses the southeastern United StatesIts length is approximately 2500m. Is surrounded by Desert plains of colorado, Utah, Arizona, Nevada, California,Baja California and Sonora. It is born at the foot of the Rocky MountainsIn ColoradoON THEIR WAY THROUGH THE STATE OF ARIZONA CREATES ONEOF THE GREATEST NATURAL WONDERS, THE GRAND COLORADOCANYON.

GEOLOGY:The most of sedimentary rocks are 2000 million years old.An exception is the sandstone that it was deposited in the same way That the desert dunes.The river at present is actively eroding its banks increasinglyBringing to ligth oldest rocks.-The conditions that ocurred during glaciations of water collected.The consequence was that the river increased the speed and depthOf the erosion process during the actually.5'3 million years ago, and the level of the river changed courseWhen the Gulf of California and descended the river level was opened.The hanging walls of the canyon were created by erosion. A millionYears ago, volcanic ash and lava over the area.

Population: The carbon dating by willow twigs representing animals found redtos state that are prior to 3000 years. Desert dwellers were hunters and gatherersEXPLORATION:The first european who watched the Grand Canyon was Garca Lpez Crdenas

Activities:
Rafting and hiking are especially popular. The valley is accessible by foot, mule or boat. The tour of the Canyon is dangerous because of the high temperatures, so often there are warning signs along the tracks that run through the Grand Canyon

CLIMA:SPRING: Mind-April winter ends,althougth frequent snowfall in May.Spring is characterized by breezes and winds, and a dry climate withLittle rainfall.Athougth there may be frost.The last time was in June.SUMMER: There is an average temperature (27-32 Degrees Celsius).Thunderstorm and Flash flood. Some storms produces much hail, strong winds and cyclones may.

AUTUMN: Autumn is cooler than the summer(16-21 Degrees Celsius)summer rains are lowerThan in September, with a dry season ando low precipitation. There are also showers in late summer and small snowstorms.WINTER: Usually begins in November with nevadasby cold weather.(-17and -7 Degrees Celsius) and the maximum temperature is (4-15)Winds are few ans there ir frost. Early, spring there may be fog, usually clearsIn the morning

http://www.youtube.com/watch?v=BaXKxAjLKRY

The work is done by:*Ainhoa Fernndez Manjn*Valeria Fernndez Fernndez