Andrew Alden

Andrew Alden is a writer, photographer, editor and blogger with a lifelong passion for rocks, minerals, fossils and the planets they come from.


Andrew spent six years with the U.S. Geological Survey, which included research excursions on land and sea. He has been a writer on geological subjects since 1981, host of the earthquakes conference on The WELL since 1992, and's Geology Expert since 1997. He began leading geological tours in 2005.


Andrew holds a bachelors in Earth science from the University of New Hampshire. He has field experience with the U.S. Geological Survey and local government, and is a constantly improving amateur geologist with a growing rock collection. He is a longtime member of the Geological Society of America and AGU.

Andrew Alden

I believe not only that geology is the core of all sciences, but also that knowledge of geology benefits every human being of any age. I regularly attend scientific meetings and keep abreast of geological literature, and I love to translate what I learn. 

Read more from Andrew Alden