The Material from Which Stalactites and Other Cave Formations Develop

question 34

Multiple Choice

The material from which stalactites and other cave formations develop is derived from

• A)halite that was dissolved from the overlying rock as groundwater flowed through it and then precipitated when the water evaporated.
• B)various types of gases in the cave,which sublimate to form a solid.
• C)calcite that was dissolved from the overlying rock as groundwater flowed through it and then precipitated when the water evaporated.
• D)calcite that sublimates from air trapped within the cave when temperatures fall below a certain level-about -10°C.
• E)phosphates that were carried into the cave by groundwater and then precipitated as the groundwater evaporated.

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