Subaërial Decay of Rocks and Origin of the Red Color of Certain Formations (open access)

Subaërial Decay of Rocks and Origin of the Red Color of Certain Formations

A report that focuses on the widespread decay of the surface rocks throughout the Appalachian region. It also focuses on the iron-stained sands which result from subaërial decay of crystalline rocks that agree in many ways with iron-stained sands forming certain geologic formations.
Date: 1889
Creator: Russell, Israel Cook
System: The UNT Digital Library
Report of Work Done in the Division of Chemistry and Physics (open access)

Report of Work Done in the Division of Chemistry and Physics

A report about mica which occurs in overlapping, crystalline plates, at Stony Point.
Date: 1889
Creator: Powell, J. W.
System: The UNT Digital Library