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This Concept Map, created with IHMC CmapTools, has information related to: RAT CMAP, Relative Dating is the less expensice, less exact of the Dating Techniques, coarse either cobble, Plate Tectonics plate boundries can be Divergent, Sill run parallel to rock layers Intrusive Igneous Rock, Chemical composition Calcarious, Weathering slowly changed Environment of Big Bend through time, Plate Tectonics plate boundries can be Convergent, Carbon-14 Half life = ~ 5,730 yrs, Mechanical via Organisms, Faulting if extensional Normal Fault, The Radioactive Decay of Certain Elements method for K-rich rocks Potassium-Argon (K-Ar), The Law of Superposition Big Bend examples South Rim, rivers change course over time Rio Grande River changing course, Metamorphic Rocks altered rocks via Contact Metamorphism, angular ie breccia, Weathering can be Mechanical, Silica (SiO2) does NOT fiz readily with Dilute HCl, Chemical composition Silicious, Magma crystalization Igneous Rocks, Calcarious can be Fossiliferous