PPT-Quaternary Glacial History of the Chilean Andes

Presented by Calvin Wight http solarviewscom capearth chilehtm Outline Background Controls on Glaciation Climatic Tectonic Latitudinal Glacial History of the Chilean Andes Northern. market design for a single buyer approach. Prof. Rodrigo Palma Behnke. Mrs. Angela Flores. July. 9. th. The . Chilean. power system is known for its early adoption of a . liberalized . market. structure. The original set-up revolved around a . Chapter 6.1 p. 282-289. Physical Features. The Andes is the . longest. mountain range in the world.. Pacific Ocean is on the . west. Atacama Desert also to the . west. .. Tropical rainforests to the . The Andes are the largest mountain range in the world.. They were formed as 2 tectonic plates called the . Nazca. Plate and the South American Plate collided slowly over millions of years.. To the west of the Andes is the Atacama Desert.. GEOL 2110. The Pleistocene Epoch. The Ice Age. Major Concepts. The gradual cooling evident in the mid to late Cenozoic reached a critical threshold which triggered extensive . glaciation. around 1.8 Ma. . Glacial Erosion. As glaciers travel over land, glacial ice can erode the underlying bedrock.. This erosion can happen by:. Plucking. A. brasion. Plucking. This occurs when melt water at the base of the glacier freezes in cracks and fractures the underlying bedrock.. GEOL 2110. The Pleistocene Epoch. The Ice Age. Major Concepts. The gradual cooling evident in the mid to late Cenozoic reached a critical threshold which triggered extensive . glaciation. around 1.8 Ma. . Document Name: THE GLACIAL HIST. & DEV. OF MI Requestor’s ID: Author’s Name: Alice Wilson Document Comments: Jennifer Daniels - Manuscript by S.G. Bergquist [P. 6A At end of document] Unit 5: Gradational Processes. Ms. . Thind. Glaciers. 10% of land is covered with glacial ice.. Store 75% of the world’s freshwater. . If all land ice melted, sea level would rise approx. 70m . Glaciers: importance?. Ch 15: p 277-281. Glaciers:. Enormous masses of moving ice created by the accumulation and compaction of snow.. Powerful agents of erosion ~ have carved some of the most spectacular features on Earth’s surface. activities . which involve the collection, recoding, arranging, storage, retrieval, exchange, and dissemination of . information.. . Ex: . Computers, Cell Phones, E-mail, . the Internet, and Research and Development. A History of Chile Sources: http://www.state.gov/r/pa/ei/bgn/1981.htm http://news.bbc.co.uk/2/hi/americas/63821.stm ~Chile is located on the western coast of South America ~It is located between the highest peaks of the Andes mountains and the Pacific Ocean A History of Chile Sources: http://www.state.gov/r/pa/ei/bgn/1981.htm http://news.bbc.co.uk/2/hi/americas/63821.stm ~Chile is located on the western coast of South America ~It is located between the highest peaks of the Andes mountains and the Pacific Ocean B. Landforms : an accumulation of till deposited by direct glacial action. Ground moraines are relatively level to gently rolling and are formed by the deposition of accumulated material beneath the Once . glacial ice exceeds a thickness of about 150 feet, the weight of the overlying ice causes . the . base of . the glacier . to become plastic and flow like a very viscous liquid. While the bottom ice responds as a plastic solid, the surface ice is very brittle. However, from the surface down to the top of the plastic portion of the glacier, the ice experiences a decrease in .