Geologic Images & Maps
By Andrew Alden, About.com Guide
- Geologic Maps
- Igneous Rock Images
- Sedimentary Rock Images
- Metamorphic Rock Images
- Other Kinds of Rocks
- Mineral & Gemstone Pictures
- Landform Pictures
- Fossil Photos
- Pictures of Geological Features
- Plate Tectonics Images
- Geology & Society in Photos
- Geologic Techniques Illustrated
Geologic Maps
Discover what underlies the ground where you live or where you plan to visit.
- Geologic Maps of the 50 U.S. States
- Geologic Maps of the USA
- Geologic Maps of Canada
- Geologic Maps of Other Countries
- Maps of Earthquake Hazard
Igneous Rock Images
Photos of all the common igneous rock types plus classification diagrams to help tell them apart.
- Igneous Rock Types
- Igneous Rock Textures
- Igneous Rock Classification Diagrams
- Readers Share Their Igneous Rocks
- Volcanic (Extrusive) Rock Types
Sedimentary Rock Images
Photos of all the common sedimentary rock types plus classification diagrams to help tell them apart.
- Sedimentary Rock Types
- Sedimentary Rocks, Fine to Coarse Grained
- Sedimentary Rock Classification Diagrams
- Readers Share Their Sedimentary Rocks
Metamorphic Rock Images
Metamorphic rocks are derived from igneous or sedimentary rocks. Here are photos of all the common metamorphic rock types.
- Metamorphic Rock Types
- Metasedimentary & Metaigneous Rocks
- Readers Share Their Metamorphic Rocks
- Eclogite Pictures
Other Kinds of Rocks
Not everything is igneous, sedimentary or metamorphic.
Mineral & Gemstone Pictures
The most common and significant minerals, more than a hundred of them, are shown here.
- Mineral Habits
- Mineral Lusters
- Gemstone Optical Effects
- Rock-Forming Minerals
- Amphibole Minerals
- Carbonate Minerals
- Elemental Minerals
- Evaporite & Halide Minerals
- Feldspars
- Garnet Minerals
- Minerals with Metallic Luster
- Mica Minerals
- Oxide Minerals
- Phosphate Minerals
- Pyroxene Minerals
- Quartz & Silica Minerals
- Silicate Minerals
- Sulfate Minerals
- Sulfide Minerals
- Zeolite Minerals
Landform Pictures
From molehills to mountains, Earth presents a panoply of landforms, each with something to say about the forces and history that made it.
- Depositional Landforms
- Erosional Landforms
- Glacial Landforms & Features
- Landslide Types & Examples
- Mountains Around the World
Fossil Photos
A closer look at some of the common and significant fossils to be found in sedimentary rocks.
Pictures of Geological Features
Geology goes beyond the everyday things that everyone else notices. Here are things that give particular pleasure to geologists.
- Sedimentary Structures
- Slickensides
- Weathering Features: Chemical Weathering
- Weathering Features: Mechanical or Physical Weathering
- Weathering Features: Organic or Biological Weathering
Plate Tectonics Images
Maps and pictures related to plate tectonics, the body of theory that describes the behavior of the Earth's surface.
- Maps of Plate Tectonics
- Subduction Zone Rocks Across California
- Accretionary Wedge Rocks, Shell Beach, California
Geology & Society in Photos
Geology is more than just a science. It's a source of wealth and knowledge for maintaining civilization, a fitting subject for travel and vacations, and a wellspring of inspiration to all kinds of thinkers.
- Earth Art Gallery
- 1906 San Francisco Earthquake Landmarks
- The 1910 Lakeview Oil Gusher
- Earthquake Engineering
- The Seven Fossil Fuels
- Geological Road Signs
- Geological Wine Labels
- State Gemstones of the USA
- State Minerals of the USA
- State Rocks of the USA
- More Geology & Society Photos
Geologic Techniques Illustrated
Methods, tests and procedures used by rockhounds, geologic technicians or Earth science researchers.