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Understanding Earth's Dynamic Systems Study Guide

This guide explores the fundamental concepts of geology, focusing on the interconnectedness of Earth's spheres, the processes that sculpt landscapes, and the impact of geological phenomena on human civilization and the solar system context. It covers topics from mineral identification to plate tectonics and volcanic activity.

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The Nature of Geology and Earth Systems

The Nature of Geology

An introduction to Earth’s main components and systems, geologic processes in landscapes, and how geology influences the distribution of resources and human life.

  • Earth's main components and systems
  • Geologic processes
  • Landscapes
  • Landslides
  • Volcanic eruptions
  • Faults
  • Earthquakes
  • Hydrologic cycle
  • Distribution of resources
  • Continental shelf
  • Erosion
  • Glacial retreat
  • Climate change
  • Fossils
  • Crust composition
  • Mantle
  • Core
  • Lithosphere
  • Asthenosphere
  • Isostasy

Atmospheric Effects and Surface Sedimentation

The atmosphere affects Earth’s surface through water vapor, wind, and energy absorption, while various environments contain different sediment sizes, shapes, and sorting.

  • water vapor
  • evapotranspiration
  • evaporation
  • wind
  • infrared energy
  • sediment size
  • sediment shape
  • sediment sorting
  • glaciers
  • rivers
  • sand dunes
  • beaches
  • steep mountain fronts

Introduction to Plate Tectonics and Earth Features

Introduction to Plate Tectonics

Explore the main features on Earth and the theory of plate tectonics including three types of boundaries.

  • plate tectonics
  • earthquakes
  • volcanoes
  • mountains
  • fracture zones
  • mid-ocean ridges
  • oceanic trenches
  • continental shelf
  • plateau
  • rift

Processes and Environments of Rock Formation

Processes of Rock Formation

Rocks form through the solidification of magma and lava, metamorphism from heat and pressure, hydrothermal precipitation, and the weathering, erosion, and lithification of sediment.

  • Igneous rock formation
  • Volcanic ash and lava
  • Magma solidification
  • Metamorphic rock
  • Heat and pressure
  • Deformation
  • Hydrothermal rock
  • Mineral precipitation
  • Weathering
  • Erosion
  • Deposition
  • Sediment
  • Lithification
  • Sedimentary rock
  • Melting

Identifying Minerals and Atomic Structures

Identifying Minerals and Atomic Structures

Distinguishing one mineral from another through properties like crystal form, cleavage, color, luster, hardness, effervescence, streak, magnetism, and density while observing how atoms are arranged in a crystalline structure.

  • Crystal form
  • Cleavage
  • Fracture
  • Color
  • Luster
  • Hardness
  • Effervescence
  • Streak
  • Magnetism
  • Density
  • Specific gravity
  • Crystalline structure
  • Atomic arrangement
  • Cubic shape
  • Tetrahedron
  • Cleavage planes
  • Periodic Table
  • Atomic number

Continental Drift and Tectonic Plate Activity

Continental Drift and Plate Tectonics

Evidence from fossils, rocks, and glacial features supports the continental drift hypothesis and the movement of tectonic plates.

  • Continental drift hypothesis
  • Fossil data
  • Glacial features
  • Earthquake patterns
  • Volcano patterns
  • Tectonic activity
  • Tectonic plates
  • Divergent boundary
  • Convergent boundary
  • Subduction
  • Transform boundary
  • Seafloor spreading

Describing Earthquakes and Seismic Waves

Types and Measurement of Seismic Waves

Seismic waves including P-waves, S-waves, and surface waves travel through Earth's interior and surface to be recorded by a seismometer.

  • Primary (P) waves
  • Secondary (S) waves
  • Surface waves
  • Seismometer
  • Seismogram
  • Triangulation
  • Richter Scale
  • P-wave shadow zone
  • S-wave shadow zone
  • Earthquake epicenter

Weathering, Slopes, and Unstable Slopes

Formation and Features of Karst Topography

Groundwater dissolves soluble rocks like limestone to create caves, sinkholes, and other karst topography features.

  • Limestone dissolution
  • Cave formation
  • Water table effects
  • Sinkhole development
  • Calcite precipitation
  • Cave formations
  • Karst topography
  • Disappearing streams
  • Geophysical surveys

Geological Observations and Earth's Systems

Geological Processes and Earth's Systems

Observations of landscapes, concept sketches, and the interactions between Earth's four spheres and the solar system.

  • Observation versus interpretation
  • Concept sketches
  • Lithosphere
  • Hydrosphere
  • Atmosphere
  • Biosphere
  • Water cycle
  • Glaciers
  • Groundwater
  • Solar system
  • Planets
  • Geology and landscape
  • Volcanic activity
  • Faults and earthquakes

Major Classes and Uses of Minerals

Major Classes of Rock-Forming Minerals

Major classes of rock-forming minerals include silicates, carbonates, oxides, halides, sulfates, sulfides, and native minerals.

  • Silicates
  • Carbonates
  • Oxides
  • Halides
  • Sulfates
  • Sulfides
  • Native minerals
  • Silica tetrahedra
  • Independent tetrahedra
  • Single chains
  • Double chains
  • Sheet silicates
  • Framework silicates
  • Cleavage
  • Pyroxene
  • Amphibole
  • Quartz

Plate Boundaries, Motions, and Seafloor Processes

Plate Tectonics and Boundary Processes

Oceanic and continental plates move through divergent, convergent, and collision boundaries to form mid-ocean ridges, trenches, island arcs, and mountain belts.

  • Oceanic divergent boundaries
  • Seafloor spreading
  • Mid-ocean ridges
  • Continental rifting
  • Ocean-ocean convergent boundary
  • Subduction
  • Island arcs
  • Accretionary prism
  • Ocean-continent convergent boundary
  • Mountain belts
  • Pacific Ring of Fire
  • Continent-continent convergence
  • Continental collision

Plate Tectonics and Seafloor Spreading

Plates move via slab pull and ridge push, creating transform boundaries, magnetic stripes, and linear island chains.

  • Transform boundaries
  • Slab pull
  • Convection currents
  • Relative plate movement
  • Magnetic reversals
  • Seafloor spreading
  • Magnetic stripes
  • Age of seafloor
  • Hot spots
  • Island and seamount chains

Volcanic Hazards, Rock Types, and Formations

Hazards and Processes of Volcanic Eruptions

Observe hazards associated with basaltic eruptions, including pyroclastic flows, lava flows and domes, tephra, and mudflows called lahar.

  • Basaltic eruptions
  • Jokulhlaup
  • Gas hazards
  • Eruption column
  • Pyroclastic flows
  • Lava flows and domes
  • Andesite
  • Rhyolite
  • Tuff
  • Volcanic breccia
  • Obsidian
  • Dome collapse

Formation and Features of Calderas

Exploration of caldera topography, stages of formation, and volcanic features including felsic magma, pyroclastic flows, and hot spot tracks.

  • caldera topography
  • felsic magma accumulation
  • magma chamber evacuation
  • pyroclastic flows
  • rhyolite domes
  • ash-rich sediment
  • granite crystallization
  • Yellowstone caldera
  • hot spot tracks
  • Snake River Plain

Soil Horizons, Formation, and Climate Effects

Processes and Characteristics of Soil Formation

Soil forms through weathering and vertical transport of material, creating horizons that vary by climate.

  • Soil horizons
  • Weathering
  • Dissolution
  • Oxidation
  • Hydrolysis
  • Root wedging
  • Tropical climates
  • Temperate climates
  • Arid climates
  • Calcite precipitation
  • Liquefaction
  • Swelling clays
  • Soil compaction

Assessing and Monitoring Volcanic Hazards

Volcanic Hazards and Monitoring Methods

Assessing volcanic dangers, monitoring seismic and gas activity, and identifying risks associated with composite volcanoes and mudflows.

  • Volcanic danger assessment
  • Proximity and wind direction hazards
  • Composite volcanoes
  • Calderas
  • Shield volcanoes
  • Subduction zones
  • Hot spots
  • Seismic activity monitoring
  • Gas activity monitoring
  • Topography and temperature changes
  • Mudflows (lahars)
  • Pyroclastic flows
  • Lava flows
  • Plate tectonics
  • Cascade range

Mechanisms and Factors of Slope Failure

Mass Wasting and Slope Stability

The role of gravity in slope stability and the classification of various slope failures including landslides, rock slides, and debris flows.

  • gravity
  • slope stability
  • angle of repose
  • discontinuities
  • slope failure triggers
  • landslides
  • rock slide
  • rotational slide
  • slump
  • creep
  • earth flow
  • debris flow
  • rock avalanche
  • scarp

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