Igneous rock is one of the three main types of rock formations making up the earth's crust. It is formed primarily through the cooling and subsequent solidification of magma or lava. Igneous rock may also form without any crystallization -- below the surface as intrusive rocks or above as extrusive. It is best to think of igneous rock as being formed with heat -- one or more of three processes:

Plate Tectonics and Landform Processes The Aleutian Islands, Alaska The Aleutian Islands are located along the southwestern coast of Alaska, ad at the northern edge of the Pacific plate. This plate runs along the Pacific coast of North America, with its well-known faults -- the San Andreas and the Denali -- causing the strike-slip plate motion that is familiar to residents of the Pacific coastal areas. However, at the Aleutian Island location

Metamorphic, Igneous, And Sedimentary Rocks and Their Application to Planets in the Solar System The objective of this study is to examine metamorphic, igneous, and sedimentary rocks and their application to planets in the solar system. There are reported to be three primary classes of rocks, which are classified according to their origination. The three rock types are metamorphic, igneous, and sedimentary rocks. Igneous rocks are formed when bodies of magma cool.

Chapter Conclusion This section will be used to provide a summary of the research and important findings supported by citations. References Arcand, Yves and Pierre Talbot. (2000) "Using Peat to Treat Wastewater." Journal of Environmental Health 62(6): 36. Author provides a description concerning the utility of peat moss in wastewater treatment applications. Included in the report is a discussion concerning the origins of habitats favored by peat moss. Author also presents a useful basic

Geology (1) Discuss which of the interrelationships between the environmental spheres, in your experience, has had the biggest effect on human society, or vice versa. Give some examples. The work of Manahan (2005) explains that there are four traditional environmental spheres including the hydrosphere, atmosphere, geosphere and the biosphere. It is related however, that a fifth sphere should be included and that is the anthrosphere, which consists of "the things humans make

Florida Green Industries. June 2002. 7 Dec. 2007 http://hort.ifas.ufl.edu/bmp/turfBMP.pdf. Carbonate-Rock Aquifers." Aquifer Basics. United States Geological Survey. 31 Jan. 2005. 8 Dec. 2007 http://capp.water.usgs.gov/aquiferBasics/carbrock.html. Cervone, Sarah. "Florida Aquifers." Planet Management in Florida Waters. University of Florida. 2003. 6 Dec. 2007 http://aquat1.ifas.ufl.edu/guide/aquifers.html. Cervone, Sarah. "Florida Geology." Plant Management in Florida Waters. University of Florida. 2003. 8 Dec. 2007 http://plants.ifas.ufl.edu/guide/geology.html. Cervone, Sarah. "Florida Sinkholes." Plant Management in Florida Waters. University of Florida. 2003. 5 Dec.