James St. John

E-mail: “stjohn.2”  at  “”

Office: Founders Hall 2150



Mailing Address:

James St. John

Founders Hall 156

1179 University Drive

Ohio State University at Newark

Newark, Ohio 43055  USA



JSJ at Crater Lake (= Mt. Mazama collapse caldera), with Wizard Island volcanic cone in the background (southwestern Oregon).


If & when this website goes down, there is a back-up here and an archived version here.


Cool Rocks


Cool Fossils


Rocks and Fossils in the Field


Geology 1100

Geology 1122

Geology 2205


Geology of American Parks


Geology of Mammoth Cave


Geology of Carlsbad Caverns


Common Minerals                Sediments


Common Rocks                    Rocks of All Ages


JSJ in the Field                    Interesting Geology Talks


Science & Pseudoscience     What is Geology?


The Evolution-Creation Thing


They Look the Same, but They’re Not!


The Most Important Info. that Few People Know


JSJ’s flickr postings (mostly geology; some biology)


JSJ’s youtube channel (mostly Yellowstone)