NS 1300 Emergence of Modern Science Chapter #17 Plate Tectonics and Physical Geology Plate Tectonic Theory Continental Drift Pangea Biogeography Magnetic Reversals Earth’s Interior Inner Core (solid) Outer Core (liquid) Mantle Moho Athenosphere (plastic) Lithosphere (crust) Hydrosphere Atmosphere Crust – Mantle Boundary Crustal Plates Types of Plate Boundaries Divergent Plate Boundaries Convergent Plate Boundaries Transform Plate Boundaries Divergent Plate Boundaries Sea-Floor Spreading Age of Ocean Floor Magnetic Anomalies Convergent Plate Boundaries Subduction Volcanic Arcs Orogeny Transform Boundaries San Andreas Fault Hot Spots Oceanic Hot Spots Island Chains Continental Hot Spots Describing Plate Motion Rotation Pole Angular Momentum Pangea Quiz 1. T or F, the earth’s mantle is made of solid rock. 2. T or F, the mid-ocean ridge is a convergent boundary. 3. T or F, the Marianis trench is a divergent boundary. 4. T or F, the San Andreas fault is a transform boundary. 5. T or F, the Hawaiian Islands are the result of hot spot volcanism. Physical Geology Stratigraphy Sequence Stratigraphy Lithostratigraphy Biostratigraphy Chronostratigraphy Structural Geology Geomorphology Landscape Geology Regional Geology Tectonic Forces Tectonic forces includes Plate tectonics Compressional forces Tensional forces Shearing forces Volcanism Orogeny (mountain building) Faulting and Folding And Intrusion of magma into the crust Faults Normal Fault Reverse Fault Strike-Slip Fault Horst and Graben Orientation of Rock Units Strike Dip Earth Quakes Focus Epicenter Seismic Waves P waves S waves Folds Folds Anticlines Synclines Hinge Zone Limbs Axis Axial Plane Quiet Volcanoes Shield Volcanoes Hot Spot Volcanoes Fissure Volcanoes Pillow Lava Explosive Volcanoes Features Magma Chamber Vent Crater Cinder Cone Caldera Pyroclastic Flows Historical Volcanoes Agents of Weathering and Erosion Water Flooding Dissolution Wind Scouring Aeolian transport Gravity Slides,Slumps and Creep Ice Frost Wedging Scouring (We’ll deal with wind and gravity now, but we’ll deal with water and ice later) Mechanisms of Sand Transport Saltation Sand Drifts Sand Dunes Wind Speed Wind Direction Variability Erosional Features Plateaus Mesas Buttes Gravity Slides Rock Mud Avalanche Slumps Creep Geologic Column Outcrops Formations Contacts Intrusions Batholiths Laccoliths Sills Dikes Unconformity Unconformities Parallel Unconformity Disconformity Angular Unconformity Geologic Maps Mapping and Satellite Imagery Quiz 1. T or F, a normal fault results from compressional stress. 2. T or F, a syncline is the downward curve of a fold. 3. T or F, a geologic column shows the sequence of events in the earth’s past. 4. T or F, a sill is a massive dome shaped intrusion. 5. T or F, a geologic map indicates the rock type exposed on the earth’s surface.