PBS
Pbs: Egypt's Golden Kingdom: Natural Resources
This PBS article explains how Egypt, even though a desert region, was blessed with many natural resources.
University of Kentucky
University of Kentucky: Rocks and Minerals: Sedimentary Rocks: Sandstone
The cementing of minerals together forms a sedimentary rock called sandstone. One form of sandstone is rock asphalt. Learn more about it here.
Andre Dollinger
Reshafim: Building in Stone
Stone masons, the builders of the pyramids, were important craftsmen in Egypt. Read about the stone, tools, and techniques these stone masons used. Hyperlinks to additional information and links to outside website for more research.
Australian Museum
Australian Museum: Sedimentary Processes
Everything you need to know about sedimentary rocks and the processes by which they are created, including weathering, soils, environments, and classification.
CK-12 Foundation
Ck 12: Plix: Sedimentary Rock Classification
[Free Registration/Login Required] Get a visual of how sedimentary rock forms through an interactive animation on this site. Also, test your understanding with a short quiz.
The Franklin Institute
Franklin Institute: How Sedimentary Rock Is Formed
The Franklin Institute describes the way sedimentary rock is formed, with links to descriptions of several types of sedimentary rocks.