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By this point in the semester students have had a refresher of basic geologic principles (Steno's laws) and depositional environments. On this trip students explore a roche moutonnee that has been cut in half by a road exposing the tilted strata in cross-section. The top surface (and others) are stromatolitic. Students are set loose on the outcrop with no prior information about the outcrop or geologic setting, and make observations at both large and small scales. We then walk the outcrop as a group to ensure all features are observed. Students then ascertain the variation in depositional environments over time, as well as the post-depositional history of the outcrop.
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