Author Question: How do stalactites, stalagmites, columns, drip curtains, and travertine terraces form? What will be ... (Read 130 times)

stevenposner

  • Hero Member
  • *****
  • Posts: 608
How do stalactites, stalagmites, columns, drip curtains, and travertine terraces form? What will be an ideal response?

Question 2

How do caves and caverns form? What will be an ideal response?



kxciann

  • Sr. Member
  • ****
  • Posts: 356
Answer to Question 1

Stalactites are icicle-like structures that hang from the ceiling due to precipitation from dripping water.
Each drop leaves a thin layer of calcite over the previous layer, so the structure grows down from the
ceiling. Stalagmites grow upward from the floor from small drops that come off the stalactite. A
column forms when a stalagmite and stalactite meet. A drip curtain is created by water seeping from a
crack in the caves ceiling to form a vertical sheet of rock. Water flowing along the cave's floor can
produce travertine terraces.



Answer to Question 2

Groundwater percolating through the zone of aeration dissolves the carbonate rock and enlarges its
fractures and bedding planes. On reaching the water table, the groundwater migrates to the surface.
The groundwater continues to dissolve rock in the zone of saturation and forms a system of horizontal
passageways. The surface streams erode deeper, the water table drops, and a new set of passageways
begin to form. The water abandons the channel ways and leaves a set of caves and caverns




Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

For a complete list of videos, visit our video library