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If & when this website goes down, there is a back-up here and an archived version here.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 of American Parks (= Geology 1105)

Geology 1122


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)