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Cards In This Set
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Joints facilitate weathering because
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B. They permit water and other chemical agents to penetrate below the surfacec. provide more surface area for the weathering front to attack
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Why did the rill depth increase on the limestone boulders measured on three different alpine glacial moraines studied along the valley floor?
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The lower moraine was older and subjected longer weathering. (not all of the above)
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Limestone will tend to precipitate in sea water when
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-carbon dioxide content increase(1*)-carbon dioxide content decreases (2)
-it is agitated by wave action (1*)- |
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Frost wedging occurs in rock because
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Water expands when it freezes to form ice
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Besides frost wedging which of the following are examples of mechanical weathering?
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-bioturbation-spalling of boulders from range fires
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H+ ions utilized in hydrolysis weathering reactions come from
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Carbonic acid
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Which of the following depositional events generally results in graded beds?
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Rivers(maybe)
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Over time angular joint blocks will (blank) due to surface weathering
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Become rounded
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What diagnostic property would you use to determine that the cementing agent within sandstone is Fe2O3?
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Its reddish color
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Chert generally precipitates in deep ocean water because
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Calcium carbonate precipitates in cold water (2)
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Rivers erosion tends to be greatest____fold structure
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Near the axis of
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Oolites form from
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Precipitation of calcite around sand grains oscillated by waves
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A sedimentary rock unit with graded beds that fine toward the top would indicate
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That the rock unit has not been deformed (remains right-side up)
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If a fault offset a layer of volcanic ash that is 15000 years old and the fault was buried by a landslide deposit that is radiocarbon dated at 12000 years one can infer that the faulting event
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Occured prior to 12000 yaocurred after 15000 ya
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According to the principle of inclusions the closest age for the formation of a conglomerate rock
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Would be the oldest clast (pebble) age comprising the conglomerate
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