PPT-Differing Chemical Weathering Conditions in

Meltwater Catchments of Western Greenland C54A06 K Deuerling J Martin University of Florida Department of Geological Sciences J Gulley University of Texas Institute for Geophysics American Geophysical Union Fluxes of Water and Methane Associated With Changing Permafrost Earth and Beyond III 09 December 2011. Have the landforms undergone changes?. What do you think caused the changes?. How long do you think the changes may have taken?. Were the changes constructive or destructive?. Notes: Rocks and Weathering. Chapter 7 –Weathering and Erosion. Objectives:. Distinguish between weathering and erosion. Identify physical variables that cause mechanical weathering. Identify chemical variables that cause chemical weathering. Weathering. The breakdown do the materials of Earth’s crust into smaller pieces.. Physical Weathering. Process by which rocks are broken down into smaller pieces by external conditions.. Types of Physical weathering. Weathering: . The . process that breaks down rock and other substances at Earth’s surface.. Factors that contribute to weathering include:. Heat, cold, water. , ice, oxygen, and carbon dioxide. Erosion: . Weathering. The breaking down of rock into smaller pieces that remain next to each other. . Weathering forms sediments.. There are two types of weathering.. Mechanical (Physical) . Chemical. Mechanical Weathering. Weathering. is the break-up of rock due to exposure to the atmosphere.. Weathering. involves two processes that often work together to decompose or break down rocks.. Chemical and Mechanical. Weathering!. Weathering. Chemical Weathering. Hydration: chemical reaction that consumes H. 2. O [ 2KAlSi. 3. O. 8. 2H. 2. CO. 3. H. 2. O = Al. 2. Si. 2. O. 5. (OH). 4. 4SiO. 2. 2K. . 2HCO. 3. -. ]. Predict how weathering might reshape surface features (topography). Weathering and Erosion. The top part of the lithosphere—the earth’s surface—changes as rocks are broken down to smaller pieces and carried away.. Weathering can be defined as any. chemical or mechanical process by which rocks exposed to weather undergo changes in character or are broken down into smaller pieces. .. Mechanical Weathering. Mechanical Weathering. After Unit 9 you should be able to:. Accurately identify common types of weathering. Understand what types of weathering are associated with certain climatic conditions. Be able to identify resistances to weathering in bedrock diagrams. Weathering. : the breaking up of rock into smaller pieces . Erosion. : the movement of sediment from place to place by wind, water, ice, or gravity. Deposition. : the re-depositing of sediments in a new location following erosion . What is Weathering?. The scenes of the world are continuously mutating. Sun, rain, frost, and wind are breaking down even the most solid of the rocks into smaller bits before they are taken away. This process is termed as weathering. . the chemical weathering flux and CO2 consumption rate of Cauvery river, South India: . Role of secondary soil . minerals (in weathered profile) Verses primary minerals . and anthropogenic . sources. Upendra. Eric . Angat. Teacher. What are the two types of weathering?. What are the different types of physical weathering?. How is root wedging similar with frost wedging?. Why are rivers rocks rounded and smooth? Think!.