Uniformitarian models, which involve plate tectonics and a dominance of horizontal forces, suggest that TTGs formed by partial melting of a subducting slab, as do modern-day adakites 3, 12, 13.

Diffusionism assumes that (1) inventiveness is rare and therefore diffusion accounts for nearly all significant culture change and (2) certain places are permanent loci of invention and thus are more ...

The University of Chicago Press publishes more than 90 scholarly journals that cover a wide range of disciplines, from the humanities and the social sciences to the life and physical sciences. In ...

This GSA Special Paper focuses on the catastrophic events that have influenced both Mars and Earth and is part of the ongoing search for the correct balance between catastrophic and uniformitarian ...

His "uniformitarian" proposal was that the forces molding the planet today have operated continuously throughout its history.

Charles Darwin read, and was much influenced by, Lyell's Principles of Geology while aboard HMS Beagle. This frontispiece image illustrates the main point of the book: that evidence of the forces ...