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15 Cards in this Set
- Front
- Back
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Why is underground water an effective shaper of the landscape?
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because of its chemical action
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What is the purpose of underground water
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-Works as a solvent
-Creates hydrothermal features |
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Dissolved carbon dioxide (gas in rain and groundwater) dissolves what kinds of rock?
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limestone, gypsum, and chalk
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Large, open underground areas in massive limestone depositions
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Cavern
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What are the 2 stages of cavern fomation?
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Initial Excavation: when water dissolves limy bedrock and leaves voids
Decoration state: when water leaves behind compounds it had been carrying in a solution (ex: stalagmites/tites) |
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A feature formed by precipitation deposits of minerals on the wall, floor, or roof of a cave
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Speleotherms (stalactites, stalagmites and pillars) limestone must be present
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Rounded depression formed by dissolution of surface carbonate rocks
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Sinkhole (most common feature of karst topography)
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Chain of intersecting sinkholes
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Uvula
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Karst topography does not contain...
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surface drainage and swallow holes
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Topography developed as a consequence of subsurface solution (usually develops where there is massive limestone bedrock)
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Karst
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How do sinkholes form?
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water table drops, population grows, and increase in groundwater use (creates lakes ex:florida)
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The outpouring or ejection of hot water (hotspring or geyser)
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hydrothermal activity
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What are 3 conditions necessary for development of hydrothermal features?
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-A heat source
-Abundance of water -Weak or broken ground surface |
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Hydrothermal feature consisting of a surface crack that is directly connected with a deep-seated source of heat
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Fumarole
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Yellowstone National Park
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-225 of earth's 425 geysers
-more than 3,000 hot springs -more than 7,000 other hydrothermal features |
