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Question
Unconformities which represent a break in the geologic record of deposition are important because ________.A) they cannot be mapped
B) they represent a period of major activity
C) the fossils found in the unconformities can be used to correlate global time period
D) they give an indication of sea level rise within an ocean basin
Answer
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Related questions
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A) reserve
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A) luster
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What does the tendency of micas to produce thin cleavage flakes suggest about its crystal structure?
A) The crystal structure is characterized by complex polymerized mats that form a sheetlike structure.
B) The structure is characterized by rings that form an interlocking network, forming planar sheets.
C) The structure is produced by flow in the igneous rock, aligning glass layers within the crystal structure.
D) The atoms are arranged in orderly arrangements that form strongly bonded sheets separated by weak bonds between the sheets.
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Use the Periodic table below to answer the following questions: When electrons are shared amongst all atoms, the resulting bond is a(n) ________ bond.
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Use the Periodic table below to answer the following questions: Element 20, Ca, has what chemical property?
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B) It tends to form covalent bonds and an ion with a charge of +1.
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D) It tends to be inert, and thus is dispersed throughout the crust.
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D) Any electron can exchange with adjacent atoms to form a bond; there is no preference.
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B) positive feedback mechanisms
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A) deep-ocean trenches
B) oceanic ridges
C) seamounts
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C) flat river valleys that cut through older mountain ranges
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A) along coastlines
B) near desert regions
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D) in areas that receive large amounts of rainfall
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A) viscosity
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A) subduction
B) sea floor spreading
C) back-arc contraction
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B) Asthenosphere
C) Lower mantle
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A) hot spots on the sea floor, like Iceland
B) spreading ridges
C) convergent plate margins
D) transform plate margins