Sediment and Soil
Sediments, sedimentology, and soil science.
The Wentworth Grain Size Scale
Sediment grades listed from boulders down to clay.
Sediment grades listed from boulders down to clay.
Desert Pavement Picture Gallery
Photos of desert pavement and its features.
Photos of desert pavement and its features.
Theories of Desert Pavement
A lot of geologic history may hide under the rug of the desert pavement.
A lot of geologic history may hide under the rug of the desert pavement.
Here's Sand In Your Eye
An introduction to this gritty subject, including the sounds of singing sand dunes.
An introduction to this gritty subject, including the sounds of singing sand dunes.
Ballfield Dirt
Baseball is played on a precision geotechnical product.
Baseball is played on a precision geotechnical product.
Why Stones Rise and Houses Sink
Farmland tends to collect stones; here's why.
Farmland tends to collect stones; here's why.
Cone Penetrometer Testing or CPT
Cone penetrometer testing is carried out near an earthquake fault.
Cone penetrometer testing is carried out near an earthquake fault.
Ground-Penetrating Radar
A crew demonstrates ground-penetrating radar in the field.
A crew demonstrates ground-penetrating radar in the field.
"Is Agriculture Eroding Civilization's Foundation?"
Geomorphologist David Montgomery puts modern agriculture, and its damage to healthy soils, in the geological context in GSA Today.
Geomorphologist David Montgomery puts modern agriculture, and its damage to healthy soils, in the geological context in GSA Today.
State Soils
Each state in the United States has selected a state soil. The U.S. Department of Agriculture lists them all, plus Puerto Rico and Virgin Islands.
Each state in the United States has selected a state soil. The U.S. Department of Agriculture lists them all, plus Puerto Rico and Virgin Islands.
Pedosphere's Keys to Soil Taxonomy
The educational site pedosphere.com has put the heart of the USDA's Keys to Soil Taxonomy, Eighth Edition online. Classify and identify your soil using rigorous professional methods.
The educational site pedosphere.com has put the heart of the USDA's Keys to Soil Taxonomy, Eighth Edition online. Classify and identify your soil using rigorous professional methods.
Canadian Soil Information System
A deep source on the wide variety of soils Canada contains. The Soil Landscapes section is full of fine soil profiles, for instances.
A deep source on the wide variety of soils Canada contains. The Soil Landscapes section is full of fine soil profiles, for instances.
International Sand Collectors Society
Headquartered in Connecticut, the ISCS site offers sand kits and a killer photo gallery.
Headquartered in Connecticut, the ISCS site offers sand kits and a killer photo gallery.
Caltech Booming Sand Dunes Research
This research group has some lovely photos and multimedia of sounding sand, plus groundbreaking research into the phenomenon.
This research group has some lovely photos and multimedia of sounding sand, plus groundbreaking research into the phenomenon.
Sound-Producing Sand Avalanches
The physics of booming sands, introduced by the University of Michigan's Franco Nori.
The physics of booming sands, introduced by the University of Michigan's Franco Nori.
Soil Science Education Page
The Goddard Space Flight Center hosts this kid-oriented introduction to the field, including science fair ideas, soil profiles, stories, and links.
The Goddard Space Flight Center hosts this kid-oriented introduction to the field, including science fair ideas, soil profiles, stories, and links.
Soil Science for Archaeologists
A whole online book from the National Park Service.
A whole online book from the National Park Service.
Web Soil Survey
The U.S. Department of Agriculture serves up custom soil maps for anywhere you like in the USA.
The U.S. Department of Agriculture serves up custom soil maps for anywhere you like in the USA.