Presentation on theme: "Thinking about relationships among the major rock groups"— Presentation transcript:
1 Thinking about relationships among the major rock groups The Rock CycleThinking about relationships among the major rock groups
2 Major Rock Groups Igneous Sedimentary Metamorphic Formed from a melt (molten rock)Plutonic (intrusive):slow cooling and crystallizationVolcanic (extrusion): quick cooling at the surfaceSedimentaryFormed at the Earth’s surfaceClastic (Mineral Fragments or grains, clays)Chemical (crystalline chemical/biochemical precipitates)MetamorphicChanged by pressure, temperature and fluids.
14 In Conclusion…The rock cycle demonstrates the relationships among the three major rock groupsIt is powered by the interior heat of the EarthAs well as earth’s momentum and…The energy from the sunIt involves processes on the Earth’s surface as well as the Earth’s interiorIt connects the “hydrologic cycle” with the “tectonic cycle”.
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