Landforms and Geologic Features
Landform Picture Index
Definitions and examples of dozens of important landforms.
Common types of tectonic landforms.
A photo dictionary of depositional landforms.
A gallery of erosional landform types.
Pictures of Geologic Features and Processes
A gallery of strictly geological phenomena.
Types of Volcanoes
The major volcano types found on land.
Gallery of Peaks
Don't miss our favorite landforms of all.
Gallery of Tombolos
Pictures of these rare sandbars that extend to an offshore island.
Geo-Quiz 3: Landforms
Give this test a try . . . you'll find it's an uphill battle.
The Three Types of Faults
The basic fault types along with their parts.
Black Smokers, Cold Seeps, Whale Falls
Three different seafloor communities have a worldwide connection.
The Rise of Erosion
This old standby of the old geology is back on today's scientific cutting edge.
Birth of a Fault
An embryonic fault is found in southern California.
Superfaults and Pseudotachylites
Faults can rub rocks together so hard, they melt.
Glacier Picture Gallery
A collection of photos and notes about glaciers and related features.
Save the Geysers!
Thar they blow! a survey of geysers around the world.
Landscape in the Lab
How do streams cut through bedrock? An elegant experiment opens the enigma.
A Superfault Superlandslide
The world's largest landslide is explained with hotspots and superfaults.
The Mountain Problem
A century of geologic progress has changed our textbook picture of mountains.
Pillow Lava Pictures
Pillow lavas from the present to the Ordovician.
The Oklo Natural Nuclear Reactor
A spontaneous nuclear reactor made of uranium ore may be Earth's neatest trick.
A gallery of photos showing slickensides, fault-polished rock surfaces.
A Look at the Playa
Why do dry lake beds occur? And why are they called playas?
Tibet's Extreme Tectonics
Amazing things go on beneath the surface crust of the Tibetan Plateau.
Wave-cut platforms are created by nearshore erosion.
Sand Dune Geology
A thorough summary by the National Park Service's John Mangimeli.
Unconformities: Gaps in the Record
In rocks, what is not there can be as informative as what is there.
Loess Hills of the Lower Mississippi Valley
A wide-ranging site about the great deposits of windblown silt in the central United States.
Parts of a Stream
The terminology of streams and their associated landforms.