Intro to physical geology and plate tectonics
1)What is geology important for?
-energy and natural resources, solving environmental problems, building cities and
highways, predicting and protecting against natural disasters (earthquakes, volcanic
Earth Rocks! Lab Exam #2 Notes
Hardness of Minerals:
Metals extracted from ore minerals:
Pyrite an ore mineral of iron
Chalcopyrite an ore mineral of copper (wire)
Galena an ore mineral of lead (car batteries)
Sphalerite an ore mineral of zinc
1 What does relative time tell us?
Whether a rock is younger or older than another based on superposition, original
horizontality, crosscutting relations, and inclusions
2 Briefly explain the 4 factors
Superposition: in undeforrned, horizont
i What is the mam cause of earthquakes?
-Elasu'c rebound of the cmst as stress builds up
-Ptocks bend then eventually rupture at the hypercentre and energy radiates in all
Cycle starts over as rocks start bending again
2 Where does
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Geology science that examines earth, its form and composition, and the
changes that it has undergone and undergoing.
Physical Geology a major division of geology that examines the materials
of earth and seeks to understand the