This page shows siliciclastic sands categorized by plate-tectonic setting. The rows work down from the most basalt-rich settings to those least characterized by basaltic rocks. Each image is a link to another page with a larger image and with a link to a microscope image - take a look!

Sands from Mid-Ocean-Ridge Volcanic Islands:

Iceland

Iceland

Galapagos

Sands from Ocean Islands:

Hawaii

Hawaii

Hawaii

Hawaii

Fiji

Fiji

Sands from Island Arcs:

U.S. Virgin Islands

Alaska

Sumatra

Bali

Bali

Guam

Sands from Active Continental Margins:

California

Washington

Oregon

Baha California

Mexico

Costa Rica

Ecuador

Sands from Passive Continental Margins:

Florida

Florida

Florida

Georgia

Georgia

Georgia

South Carolina

Virginia

Tunisia

Morocco

Australia

Australia

Australia

Malaysia

 

There's also a page with more information on plate tectonics

The title page and table of contents for this set of web pages

e-mail to Railsback (rlsbk@gly.uga.edu)
Railsback's main web page
UGA Geology Department web page
 

LOCATION