LATEST VERIFIED FINAL EXAM UPDATE: ESS 101 A+
QUESTIONS AND ANSWERS.
joints facilitate weathering because
-permit water and other chemical agents to penetrate below the surface
-provide more surface area for the weathering front to attack
why did the rill depth increase on the limestone boulders measured on three
different alpine glacial moraines studied along the valley floor
the lower moraine was older and subjects to longer weathering
limestone will tend to precipitate in sea water when
-carbon dioxide content increases
-it is agitated by wave action
frost wedging occurs in rock because
water expands when it freezes from ice
besides frost wedging which of the following are examples of mechanical
weathering?
-bioturbation
-spalling of boulders from range fires
h+ ions utilized in hydrolysis weathering reactions come from
carbonic acid
which of the following depositional events generally results in graded beds?
turbidity currents
over time angular joint blocks will ___ due to surface weathering
become rounded
what diagnostic property would you use to determine that the cementing agent
within sandstone is Fe2O3?
reddish color
chert generally precipitates in deep ocean water because
calcium carbonate precipitates in cold water
river erosions tend to be greatest ___ fold structure
, near the axis of
oolites form from
precipitation of calcite around sand grains oscillated by waves
a sedimentary rock unit with graded beds that fine towards the top would indicate
___
that the rock unit has not been deformed (remains right-side up)
if a fault offset a layer of volcanic ash that is 15,000 years old and the fault was
buried by a landslide deposit that is radiocarbon dated at 12,000 years old one
can infer that the faulting event ___
-occured prior to 12,000 years ago
-occured after 15,000 years ago
according to the principle of inclusions the closest age for the formation of a
conglomerate rock ___
would be the youngest class (pebble) age composing the conglomerate
how might you recognize in the field that a disconformity exists between two
sequences of rock?
-you might observe a buried soil or weathering zone between the 2 units
-you may observe fossils b/w the 2 rock units that did not live during the same time
period
the strike-slip fault shown below is ___
right lateral
the zig zag pattern of rock units that can be observed while flying over
pennsylvania is due to ___
erosion of plunging (tilted) anticlines and synclines
which of the following transport agents generally results in oscillation (symmetric
ripples)?
ocean waves
according to the principle of cross-cutting relationships, if a fault is found cutting
across sedimentary strata, the reasonable conclusion would be that
the fault is younger that the strata
QUESTIONS AND ANSWERS.
joints facilitate weathering because
-permit water and other chemical agents to penetrate below the surface
-provide more surface area for the weathering front to attack
why did the rill depth increase on the limestone boulders measured on three
different alpine glacial moraines studied along the valley floor
the lower moraine was older and subjects to longer weathering
limestone will tend to precipitate in sea water when
-carbon dioxide content increases
-it is agitated by wave action
frost wedging occurs in rock because
water expands when it freezes from ice
besides frost wedging which of the following are examples of mechanical
weathering?
-bioturbation
-spalling of boulders from range fires
h+ ions utilized in hydrolysis weathering reactions come from
carbonic acid
which of the following depositional events generally results in graded beds?
turbidity currents
over time angular joint blocks will ___ due to surface weathering
become rounded
what diagnostic property would you use to determine that the cementing agent
within sandstone is Fe2O3?
reddish color
chert generally precipitates in deep ocean water because
calcium carbonate precipitates in cold water
river erosions tend to be greatest ___ fold structure
, near the axis of
oolites form from
precipitation of calcite around sand grains oscillated by waves
a sedimentary rock unit with graded beds that fine towards the top would indicate
___
that the rock unit has not been deformed (remains right-side up)
if a fault offset a layer of volcanic ash that is 15,000 years old and the fault was
buried by a landslide deposit that is radiocarbon dated at 12,000 years old one
can infer that the faulting event ___
-occured prior to 12,000 years ago
-occured after 15,000 years ago
according to the principle of inclusions the closest age for the formation of a
conglomerate rock ___
would be the youngest class (pebble) age composing the conglomerate
how might you recognize in the field that a disconformity exists between two
sequences of rock?
-you might observe a buried soil or weathering zone between the 2 units
-you may observe fossils b/w the 2 rock units that did not live during the same time
period
the strike-slip fault shown below is ___
right lateral
the zig zag pattern of rock units that can be observed while flying over
pennsylvania is due to ___
erosion of plunging (tilted) anticlines and synclines
which of the following transport agents generally results in oscillation (symmetric
ripples)?
ocean waves
according to the principle of cross-cutting relationships, if a fault is found cutting
across sedimentary strata, the reasonable conclusion would be that
the fault is younger that the strata
