Granite comparison
The Early Cambrian Wichita Granite Group of southwestern Oklahoma is exposed as a dozen shallowly-emplaced sheet plutons that exhibit...
Mapping at high resolution
Geologic mapping has been a traditional tool of Earth science; the distribution of exposed rock types provides a key constraint to any...
Which pluton are you?
The Wichita Mountains of southwestern Oklahoma exposes the products Cambrian rift magmatism. The bulk of the felsic rocks represent a...
Granite on the margins
Magmas intrude the shallow crust by opening fractures, known as dikes. The photo shows a granitic dike cutting gabbroic rocks, in the...
Bismuth analogs for microstructure
Undergraduate research and EURECA student, Jared Steger, has grown bismuth crystals for use in a study on rock microstructure. Jared...