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Is the water table below the layer of impermeable rock?
If the layer of impermeable rock is below the water table, then the water table is likely above the impermeable rock and the groundwater will be trapped above it. If the impermeable rock is above the water table, then the water table is likely below the impermeable rock layer and the groundwater will not be able to pass through it.
Aquifiers form above this type of soil?
impermeable
What is the angular unconformity?
Tilted strata lie below the unconformity; bedding in younger strata above is parallel to the unconformity.
What impermeable rock that occurs at the top of an oil reservoir?
Cap rock, such as shale or salt rock, forms a impermeable seal above an oil reservoir, preventing the oil from migrating upwards and escaping to the surface.
Aquifers form above this type of soil?
Aquifers form above permeable soil, such as sand or gravel, that allows water to flow easily. Impermeable soils like clay or bedrock will prevent the formation of aquifers.
Which is older deep strata or shallow strata?
There is no absolute trend, since geological faults can thrust older rocks above younger ones, and whole sequences can be turned upside down. However, more often than not, for a single location deeper strata are older.
Does not let water pass through it?
A waterproof material does not allow water to pass through it due to its water-resistant properties and tightly sealed structure. This feature is commonly found in materials like rubber, plastic, and certain fabrics that are treated to be impermeable to water.
Where is the groundwater located under the surface?
Its located above layers of impermeable underground rocks. At or below the water table.
Fossils found in the lowest geological strata are gerenally the most?
Fossils found in the lowest geological strata are generally the oldest. This is because the law of superposition dictates that older rock layers are found at the bottom, with each successive layer above being younger. Therefore, fossils found in lower strata are older than those in higher strata.
What happens once groundwater reaches a layer of rock in the ground that it cannot pass through?
When groundwater reaches a layer of rock it cannot pass through, it accumulates above the impermeable layer, creating a water table. This can lead to the formation of a perched water table, causing localized saturation above the impermeable layer. If the water cannot escape through another pathway, it may flow laterally along the top of the impermeable layer.
What is a perched water table and what is the cause?
A perched water table is a localized zone of saturation above the main water table within the soil profile. It typically forms in areas where impermeable layers, such as clay or bedrock, restrict downward movement of water. This leads to the accumulation of water above the impermeable layer, creating a perched water table.
What type of aquifer is bounded above and below by relatively impermeable beds?
A confined aquifer, also known as an artesian aquifer, is bounded above and below by impermeable layers of rock or sediment which prevent water from easily entering or leaving the aquifer. This creates high pressure within the aquifer, causing water to flow upward when a well is drilled into it.
