ALBERT

Note: Meet the Authors ... vi --- Preface ... xiii --- The Modern Theory and Practice of Geology --- The Earth System ... 1 --- The Scientific Method ... 2 --- Earth's Shape and Surface ... 3 --- The Geologic Record ... 4 --- Peeling the Onion: Discovery of a Layered Earth ... 6 --- Earth as a System of Interacting Components ... 10 --- An Overview of Geologic Time ... 14 --- Plate Tectonics: The Unifying Theory ... 18 --- The Discovery of Plate Tectonics ... 19 --- The Mosaic of Plates ... 22 --- Rates and History of Plate Motions ... 30 --- The Grand Reconstruction ... 35 --- Mantle Convection: The Engine of Plate Tectonics ... 37 --- The Theory of Plate Tectonics and the Scientific Method ... 42 --- Basic Geologic Processes --- Earth Materials: Minerals and Rocks ... 44 --- What Are Minerals? ... 45 --- The Atomic Structure of Matter ... 46 --- Chemical Reactions ... 47 --- Chemical Bonds ... 49 --- The Atomic Structure of Minerals ... 49 --- Rock-Forming Minerals ... 52 --- Physical Properties of Minerals ... 56 --- What Are Rocks? ... 62 --- Igneous Rocks ... 63 --- Sedimentary Rocks ... 64 --- Metamorphic Rocks ... 66 --- The Rock Cycle: Interactions Between the Plate Tectonic and Climate Systems ... 66 --- Minerals Occur in Rocks as Valuable Resources ... 68 --- Earth Issues: Sulfide Minerals React to Form Acid Waters on Earth and Mars ... 57 --- Igneous Rocks: Solids from Melts ... 76 --- How Do Igneous Rocks Differ from One Another? ... 78 --- How Do Magmas Form? ... 83 --- Where Do Magmas Form? ... 85 --- Magmatic Differentiation ... 85 --- Forms of Magmatic Intrusions ... 88 --- Igneous Activity and Plate Tectonics ... 91 --- Sedimentation: Rocks Formed by Surface Processes ... 100 --- Sedimentary Rocks Are Produced by Surface Processes in the Rock Cycle ... 102 --- Sedimentary Basins: The Sinks for Sediments ... 106 --- Sedimentary Environments ... 108 --- Sedimentary Structures ... 111 --- Burial and Diagenesis: From Sediment to Rock ... 114 --- Classification of Siliciclastic Sediments and Sedimentary Rocks ... 116 --- Classification of Chemical and Biological Sediments and Sedimentary Rocks ... 119 --- Earth Policy: Darwin's Coral Reefs and Atolls ... 124 --- Metamorphism: Modification of Rocks by Temperature and Pressure ... 130 --- Metamorphism and the Earth System ... 132 --- Causes of Metamorphism ... 133 --- Types of Metamorphism ... 134 --- Metamorphic Textures ... 136 --- Regional Metamorphism and Metamorphic Grade ... 141 --- Plate Tectonics and Metamorphism ... 144 --- Deformation: Modification of Rocks by Folding and Fracturing ... 150 --- Mapping Geologic Structure ... 152 --- How Rocks Deform ... 154 --- Basic Deformation Structures ... 156 --- Styles of Continental Deformation ... 163 --- Unraveling Geologic History ... 165 --- Earth and Planets Through Geologic Time --- Clocks in Rocks: Timing the Geologic Record ... 168 --- Reconstructing Geologic History from the Stratigraphic Record ... 170 --- Geologic Time Scale: Relative Ages ... 178 --- Measuring Absolute Time with Radioactive Clocks ... 180 --- Geologic Time Scale: Absolute Ages ... 183 --- Timing the Earth System ... 184 --- Earth Issues: The Grand Canyon Sequence and Regional Correlation of Strata ... 176 --- Early History of the Terrestrial Planets ... 188 --- Origin of the Solar System ... 190 --- Early Earth: Formation of a Layered Planet ... 192 --- Diversity of the Planets ... 195 --- What's in a Face? The Age and Complexion of Planetary Surfaces ... 197 --- Mars Rocks! ... 204 --- Exploring the Solar System and Beyond ... 210 --- Evolution of the Continents ... 214 --- The Tectonics of North America ... 216 --- Tectonic Provinces Around the World ... 221 --- How Continents Grow ... 224 --- How Continents Are Modified ... 226 --- The Formation of Cratons ... 235 --- The Deep Structure of Continents ... 236 --- Geobiology: Life Interacts with the Earth ... 240 --- The Biosphere as a System ... 242 --- Microbes: Nature's Tiny Chemists ... 246 --- Geobiological Events in Earth's History ... 254 --- Astrobiology: The Search for Extraterrestrial Life ... 265 --- Earth Issues: The Mother of all Mass Extinctions: Whodunit? ... 264 --- Internal Geosystems --- Volcanoes ... 270 --- Volcanoes as Geosystems ... 272 --- Lavas and Other Volcanic Deposits ... 273 --- Eruptive Styles and Landforms ... 277 --- Geosystem Interactions ... 282 --- The Global Pattern of Volcanism ... 284 --- Volcanism and Human Affairs ... 288 --- Earth Policy: Mount St. Helens: Dangerous but Predictable ... 292 --- Earthquakes ... 296 --- What Is an Earthquake? ... 298 --- Studying Earthquakes ... 301 --- Earthquakes and Patterns of Faulting ... 309 --- Earthquake Destructiveness ... 313 --- Can Earthquakes Be Predicted? ... 320 --- Earth Issues: The Great Indian Ocean Tsunami of 2004 ... 312 --- Earth Issues: Seven Steps to Earthquake Safety ... 319 --- Exploring: Earth's Interior ... 324 --- Exploring the Interior with Seismic Waves ... 325 --- Layering and Composition of the Interior ... 328 --- Earth's Internal Heat and Temperature ... 332 --- The Three-Dimensional Structure of the Mantle ... 338 --- Earth's Magnetic Field and the Geodynamo ... 337 --- Earth Issues: The Uplift of Scandinavia: Nature's Experiment with Isostasy ... 331 --- Earth Issues: The Geoid: Shape of Planet Earth ... 338 --- Surficial Geosystems --- The Climate System ... 346 --- Components of the Climate System ... 348 --- The Greenhouse Effect ... 352 --- Climate Variability ... 355 --- The Carbon Cycle ... 362 --- Twentieth-Century Warming: Human Fingerprints of Global Change ... 366 --- Earth Issues: Vostok and GRIP: Ice-Core Drilling in Antarctica and Greenland ... 358 --- Earth Issues: El Nino: The Wayward Child ... 360 --- Weathering, Erosion, and Mass Wasting: Interface Between Climate and Tectonics ... 370 --- Weathering, Erosion, Mass Wasting, and the Rock Cycle ... 372 --- Controls on Weathering ... 372 --- Chemical Weathering ... 373 --- Physical Weathering ... 378 --- Soil: The Residue of Weathering ... 381 --- Mass Wasting ... 384 --- Classification of Mass Movements ... 388 --- Understanding the Origins of Mass Movements ... 395 --- The Hydrologic Cycle and Groundwater ... 400 --- Flows and Reservoirs ... 402 --- Hydrology and Climate ... 404 --- The Hydrology of Runoff ... 406 --- Groundwater ... 408 --- Water Resources from Major Aquifers ... 415 --- Erosion by Groundwater ... 417 --- Water Quality ... 418 --- Water Deep in the Crust ... 421 --- Earth Issues: Water Is a Precious Resource: Who Should Get It? ... 404 --- Earth Issues: When Do Groundwaters Become Nonrenewable Resources? ... 416 --- Stream Transport: From Mountains to Oceans ... 426 --- Stream Valleys, Channels, and Floodplains ... 428 --- Drainage Networks ... 432 --- Where Do Channels Begin? How Running Water Erodes Solid Rock ... 435 --- How Stream Waters Flow and Transport Sediment ... 437 --- Deltas: The Mouths of Rivers ... 440 --- Streams as Geosystems ... 443 --- Earth Issues: The Development of Cities on Floodplains ... 432 --- Winds and Deserts ... 452 --- Wind as a Flow of Air ... 454 --- Wind as a Transport Agent ... 455 --- Wind as an Agent of Erosion ... 458 --- Wind as a Depositional Agent ... 460 --- The Desert Environment ... 464 --- Earth Issues: Martian Dust Storms and Dust Devils ... 457 --- Coastlines and Ocean Basins ... 472 --- Basic Differences Between Ocean Basins and Continents ... 474 --- Coastal Processes ... 474 --- Shorelines ... 485 --- Sea Level Change as a Measure of Global Warming ... 488 --- Continental Margins ... 491 --- The Deep Oceans ... 494 --- Ocean Sedimentation ... 500 --- Earth Policy: The Great New Orleans Flood ... 480 --- Earth Issues: Preserving Our Beaches ... 490 --- Glaciers: The Work of Ice ... 504 --- Ice as a Rock ... 506

Note: Contents About the Authors Preface Chapter 1 The Earth System The Scientific Method Hypothesis and Theory Scientific Models Importance of Scientific Collaboration Geology as a Science Earth's Shape and Surface Peeling the Onion: Discovery of a Layered Earth Earth's Density The Mantle and Core The Crust The Inner Core Chemical Composition of Earth's Major Layers Earth as a System of Interacting Components The Climate System The Plate Tectonic System The Geodynamo Interactions Among Geosystems Support Life An Overview of Geologic Time The Origin of Earth and Its Global Geosystems The Evolution of Life Chapter 2 Plate Tectonics: The Unifying Theory The Discovery of Plate Tectonics Continental Drift Seafloor Spreading The Great Synthesis: 1963-1968 The Plates and Their Boundaries Divergent Boundaries Convergent Boundaries Transform Faults Combinations of Plate Boundaries Rates and History of Plate Movements The Seafloor as a Magnetic Tape Recorder Deep-Sea Drilling Measurements of Plate Movements by Geodesy The Grand Reconstruction Seafloor isochrons Reconstructing the History of Plate Movements The Breakup of Pangaea The Assembly of Pangaea by Continental Drift Implications of the Grand Reconstruction Mantle Convection:The Engine of Plate Tectonics Where Do the Plate-Driving Forces Originate? How Deep Does Plate Recycling Occur? What Is the Nature of Rising Convection Currents? Chapter 3 Earth Materials: Minerals and Rocks What Are Minerals? The Structure of Matter The Structure of Atoms Atomic Number and Atomic Mass Chemical Reactions Chemical Bonds The Formation of Minerals The Atomic Structure of Minerals The Crystallization of Minerals How Do Minerals Form? Classes of Rock-Forming Minerals Silicates Carbonates Oxides Sulfides Sulfates Physical Properties of Minerals Hardness Cleavage Fracture Luster Color Density Crystal Habit What Are Rocks? Properties of Rocks Igneous Rocks Sedimentary Rocks Metamorphic Rocks The Rock Cycle: Interactions Between the Plate Tectonic and Climate Systems Concentrations of Valuable Mineral Resources Hydrothermal Deposits Igneous Deposits Sedimentary Deposits Mineral Evolution Chapter 4 Igneous Rocks: Solids from Melts How Do Igneous Rocks Differ from One Another? Texture Chemical and Mineral Composition How Do Magmas Form? How Do Rocks Melt? The Formation of Magma Chambers Where Do Magmas Form? Magmatic Differentiation Fractional Crystallization: Laboratory and Field Observations Granite from Basalt: Complexities of Magmatic Differentiation Forms of Igneous Intrusions Plutons Sills and Dikes Veins Igneous Processes and Plate Tectonics Spreading Centers as Magma Factories Subduction Zones as Magma Factories Mantle Plumes as Magma Factories Chapter 5 Volcanoes Volcanoes as Geosystems Lavas and Other Volcanic Deposits Types of Lava Textures of Volcanic Rocks Pyroclastic Deposits Eruptive Styles and Landforms Central Eruptions Fissure Eruptions Interactions of Volcanoes with Other Geosystems Volcanism and the Hydrosphere Volcanism and the Atmosphere The Global Pattern of Volcanism Volcanism at Spreading Centers Volcanism in Subduction Zones Intraplate Volcanism: The Mantle Plume Hypothesis 2018 Eruption of Kilauea Volcano, Hawaii Volcanism and Human Affairs Volcanic Hazards Reducing the Risks of Volcanic Hazards Natural Resources from Volcanoes Chapter 6 Sedimentation: Rocks Formed by Surface Processes Surface Processes of the Rock Cycle Weathering and Erosion: The Source of Sediments Transportation and Deposition: The Downhill Journey to Sedimentary Basins Oceans as Chemical Mixing Vats Sedimentary Basins:The Sinks for Sediments Rift Basins and Thermal Subsidence Basins Flexural Basins Sedimentary Environments Continental Sedimentary Environments Shoreline Sedimentary Environments Marine Sedimentary Environments Siliciclastic versus Chemical and Biological Sedimentary Environments Sedimentary Structures Cross-Bedding Graded Bedding Ripples Bioturbation Structures Bedding Sequences Burial and Diagenesis: From Sediment to Rock Burial Diagenesis Classification of SiliciclasticSediments and Sedimentary Rocks Coarse-Grained Siliciclastics: Gravel and Conglomerate Medium-Grained Siliciclastics: Sand and Sandstone Fine-Grained Siliciclastics Classification of Chemical and Biological Sediments and Sedimentary Rocks Carbonate Sediments and Rocks Evaporite Sediments and Rocks: Products of Evaporation Other Biological and Chemical Sediments Chapter 7 Metamorphism: Alteration of Rocks by Temperature and Pressure Causes of Metamorphism The Role of Temperature The Role of Pressure The Role of Fluids Types of Metamorphism Regional Metamorphism Contact Metamorphism Seafloor Metamorphism Other Types of Metamorphism MetamorphicTextures Foliation and Cleavage Foliated Rocks Granoblastic Rocks Porphyroblasts Regional Metamorphism and Metamorphic Grade Mineral Isograds: Mapping Zones of Change Metamorphic Grade and Parent Rock Composition Metamorphic Fades PlateTectonics and Metamorphism Metamorphic Pressure-Temperature Paths Ocean-Continent Convergence Continent-Continent Collision Exhumation: A Link Between the Plate Tectonic and Climate Systems Chapter 8 Deformation: Modification of Rocks by Folding and Fracturing PlateTectonic Forces Mapping Geologic Structure Measuring Strike and Dip Geologic Maps Geologic Cross Sections How Rocks Deform Brittle and Ductile Behavior of Rocks in the Laboratory Brittle and Ductile Behavior of Rocks in Earth's Crust Basic Deformation Structures Faults Folds Circular Structures Joints Deformation Textures Styles of Continental Deformation Tensional Tectonics Compressive Tectonics Shearing Tectonics Unraveling Geologic History Chapter 9 Clocks in Rocks: liming the Geologic Record Reconstructing Geologic History From the Stratigraphic Record Principles of Stratigraphy Fossils as Recorders of Geologic Time Unconformities: Gaps in the Geologic Record Cross-Cutting Relationships The Geologic Time Scale: Relative Ages Intervals of Geologic Time Interval Boundaries Mark Mass Extinctions Ages of Petroleum Source Rocks Measuring Absolute Time with Isotopic Clocks Discovery of Radioactivity Radioactive Isotopes: The Clocks in Rocks Isotopic Dating Methods The Geologic Time Scale: Absolute Ages Eons: The Longest Intervals of Geologic Time Perspectives on Geologic Time Recent Advances in Timing the Earth System Sequence Stratigraphy ,Chemical Stratigraphy Paleomagnetic Stratigraphy Clocking the Climate System Chapter 10 Earthquakes What Is an Earthquake? The Elastic Rebound Theory Fault Rupture During Earthquakes Foreshocks and Aftershocks How Do We Study Earthquakes? Seismographs Seismic Waves Locating the Focus Measuring the Size of an Earthquake Determining Fault Mechanisms GPS Measurements and "Silent" Earthquakes Earthquakes and Patterns of Faulting The Big Picture: Earthquakes and Plate Tectonics Regional Fault Systems Earthquake Hazards and Risks How Earthquakes Cause Damage Reducing Earthquake Risk Can Earthquakes Be Predicted? Long-Term Forecasting Short-Term Prediction Medium-Term Forecasting Chapter 11 Exploring Earth's Interior Exploring Earth's Interior with Seismic Waves Basic Types of Waves Paths of Seismic Waves Through Earth Seismic Exploration of Near-Surface Layering Layering and Composition of Earth's Interior The Crust The Mantle The Core-Mantle Boundary The Core Earth's Internal Temperature Heat Flow Through Earth's Interior Temperatures Inside Earth Visualizing Earth'sThree-Dimensional Structure Seismic Tomography Earth's Gravitational Field Earth's Magnetic Field and the Geodynamo The Dipole Field Complexity of the Magnetic Field Paleomagnetism The Magnetic Field and the Biosphere Chapter 12 The Climate System What Is Climate? Components of the Climate