GEOL 101: EXAM 2
20 Cards in this Set
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The Cambrian explosion refers to...
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The sudden appearance of animal in the fossil record
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Geologically, the oldest part of the North American continent is...
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The shield and interior platform
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The most important products of the 1950's era prebiotic soup experiments were...
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amino acids
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Geologists recognize a reverse fault as one in which...
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Rocks in the hanging wall have moved upward
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Geologists are particularly interested in stromatolites since...
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these rocks hold some of the most important evidence for early life on Earth
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What about Mars is true/
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There is plenty of evidence for the presence of water in the past
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A mylonite texture is likely to have developed as a result of...
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intense shearing forces
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The formation of the San Andreas fault is best described as...
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oblique convergence of an oceanic ridge with the North American plate
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The rocks exposed at the base of the Grand Canyon
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are separated from overlying sedimentary strata by an angular unconformity
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A marble cylinder compressed int he lab at lower crustal pressures...
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Will like show ductile deformation
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The number of radioactive atoms left after three half-lives have passed is...
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1/8 of the original population
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Most geologists believe the earliest fossil evidence of life on Earth occured...
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after the late heavy bombardment period of impacts
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Which of these is characteristic of a right bend of a right-lateral fault?
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Normal faults
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During the metabolic process of photosynthesis...
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organisms store glucose and consume carbon dioxide
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Rock strata are separated by great distances are correlated by matching...
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fossil assemblages
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Oxygen was first added to the primitive atmosphere of Earth by...
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photosynthesis of microorganisms (cyanobacteria)
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Which statement about the geological time scale is true...
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geological era are defined by changes in fossil assemblages
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Which best describes the evolution of hte western NA continent...
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multiple accretion of island arcs and buoyant continental fragments
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The series of evens describing the formation of the solar system is called...
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the nebular hypothesis
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The assembly of supercontinent Pangea occured as a result of..
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A series of orogenic, or mountain building, events
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Chapter 10