A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Analyzing rocks in thin ...

Bruce Bjornstad has loved rocks since he was a kid, growing up on the East Coast. But his real love and expertise is the Missoula Floods — cataclysmic events that scoured the Columbia Basin and laid ...

What are some events that all of us have had in our lives? Ask the class "What are some events that all of us have had in our lives?" Make a list of 5 or 6 things on the board. Let’s organize these!

An introduction to geology -- Plate tectonics: a scientific revolution unfolds -- Matter and minerals -- Magma, igneous rocks, and intrusive activity -- Volcanoes and volcanic hazards -- Weathering ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Credit: E. Cottrell, ...