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McC 8 Rocks

McC Rocks

rock a mixture of minerals, volcanic glass, organic matter, and other materials
rock cycle a model that illustrates the processes that create and change rock
principle of conservation of matter the fact that illustrates that changes in the rock cycle never creates nor destroys matter
igneous rock type of rock formed when magma cools and hardens
lava magma that reaches the Earth's surface and flows from volcanoes
magma melted or molten rock
intrusive rocks that form from magma below the surface of the Earth
extrusive rocks that cool on or near the Earth's surface
basaltic dense, darkly colored rocks that are rich in iron and magnesium, but poor in silica
granitic lighter colored rocks of lower density; contains more silica and less iron and magnesium
metamorphic rock rocks that have been tranformed through heat, pressure and the presence of hot-watery fluids
foliated mineral grains that flatten and line up in parallel layers
nonfoliated mineral grains that grow and rearrange but do not line up in layers
sediment loose materials such as rock fragments, mineral grains, bits of plant and animal remains that have been moved by wind, water, ice or gravity
sedimentary rock rocks that form when sediments are pressed and cemented together or when minerals form from solutions
compaction process by which layer upon layer of sediment creates pressure, pushing the layers to form rocks
cementation the process by which water soaks through rock and soil and forms solution that moves through open spaces between sediments
weathering the prcoess by which rocks are broken into smaller pieces
erosion the process by which sediments are moved to new locations
coal useful organic sedimentary rock formed from pieces of dead plants buried under swamp sediments
Created by: aberndt