author
W. D. Keller
1900–2001
A pioneering American geologist and clay mineralogist, he spent decades studying how minerals form, weather, and shape the earth beneath our feet. His writing brings complex geology down to earth, especially for readers curious about rocks, soils, and the science of the natural world.
1 Audiobook
The Common Rocks and Minerals of Missouri
by W. D. Keller
About the author
Born in Clay County, Missouri, in 1900, Walter D. Keller became an influential geologist, sedimentologist, and clay mineralogist whose career was closely tied to the University of Missouri. He earned multiple degrees in geology and related fields and later served on the university's geology faculty, eventually leading the department.
Keller was known internationally for his research on clays, kaolin, weathering, and sedimentary processes. Alongside his scientific papers, he also wrote books for students and general readers, including works on introductory geology and Missouri's rocks and minerals, helping make earth science more approachable.
He lived a remarkably long life, passing away in 2001 at the age of 101. Remembered as a major figure in twentieth-century geology, he left behind both a strong research legacy and a gift for explaining the everyday importance of the ground beneath us.