Geobulletin alpha

ECHOES IN STONE: WASHINGTON GEOLOGY 

Washington StateTwo hundred million years ago, what we now call Washington wasn’t Washington at all. It was two drifting islands — fragments of a wandering continent slowly inching their way west across the ancient ocean. They were vagabonds, carried on tectonic currents until, at last, they collided with the North American continent and made themselves at home.That restless motion

Productella spinulicosta Brachiopod Fossil 

This plate contains a number of spiny brachiopods that appear to be Productella spinulicosta (Hall, 1867) in the Jeffersonville Limestone. The fossil dates to the Devonian Period. It was found at Coopers Lane Quarry Clark County, Indiana USA by Barbara Conkin (1928-2019) who was a local professor of geology.