GLG 201 Midterm: Exam 2 Study Guide
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Symmetric flow is back and forth so there are ridges and a smooth trough in between. Asymmetric flow is in one direction with a steep slope on one side: what is transgression and regression, sea level changes moving depositional belts. Transgression flooding due to sea level rise. Regression exposure due to sea level fall: create predictable patterns of strata called depositional sequences . Slate finest grained, from shale or mudstone, at low pressure and temperature. Gneiss banded with light felsic and dark mafic minerals. Marble: what are the causes of foliation in rock, rock was subjected to differentiated stress, nonfoliated rocks were recrystallized without compression or shear, what is a gneiss, metamorphic rock with distinct, often contorted, compositional bands. Chapter 9: volcanic eruptions: what are the different types of volcanoes and eruptive behavior, types of volcanoes. Cinder cone smallest, formed by fragments piling up at the vent (ex. Shield broad, dome-shaped, constructed by slow flows (ex.
