Water-saturated muds have actually low permeabilities yet can have higher porosities 보다 well-cemented sandstone.
You are watching: Which common, rock-forming mineral or mineral group is most readily dissolved by groundwater?
true
An artesian fine is one in which ________.
water rises over the optimal of the aquifer without any pumping
________ would have the biggest capacity to naturally remove sewer pollutants.
Slightly clayey sand
________ is the volume that voids or open an are in a rock or unconsolidated material.
porosity
Which among the following logically describes why parts of some cavern systems room aerated?
a nearby, downcutting stream lower the water table ~ the caves had actually formed
A perched water table develops when ________.
a horizontal aquitard over the local water table lies listed below an aquifer
The aerated zone ________.
lies above the water table
The term karst topography was very first used in ________.
the Republic the Slovenia, a district of the previous Yugoslavia
________ are attributes found in all good aquifers.
High porosity and high permeability
A ________ is the icicle-like speleothem the grows under from the roof the a cavern.
stalactite
Which among the adhering to is not a speleothem?
geyserite
For unconfined aquifers, what hydrologic variable is approximated by the steep of the water table?
hydraulic gradient
Permeability is the physical pressure that pushes water listed below the water table v a porous, rock material.
false
Which that the adhering to geologic materials would have the highest possible groundwater velocities and be least efficient in removing unwanted pollutants from the water?
limestone; countless solution channels and fractures widened by dissolution
Artesian groundwater problems can develop in an inclined aquifer v aquitards above and below.
true
Which the the following explains the configuration of an unconfined water table around a pump well?
cone that depression
An unconfined water table is the ________.
boundary in between the saturated zone above and partly saturated region below
________ account because that the largest usage of groundwater in the united States.
Agriculture and also irrigation
In locations underlain through unconsolidated or weakly consolidated strata, lowering that the water table can cause the land come subside.
true
Which one of the following worrying stalactites and stalagmites is not true?
stalagmites form on the floors of caves listed below the water table
In locations of karst topography, rare surface streams frequently flow right into sinkholes and also continue flow underground for part distance.
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true
________ controls the lull (or difficulty) of underground water transmission v a porous material.
permeability
Which common, rock-forming mineral or mineral team is most readily liquified by groundwater?
calcite
Which the the following can logically be concluded by speleothems/dripstone hanging native a cavern roof?
the cave roof was over the water table when the speleothems formed
The hot spring deposits at Mammoth warm Springs, Yellowstone nationwide Park, are travertine. What rock probably lies what beneath the warm springs?