Calcite (Inventory)/Folia
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{{Inventory image|File:Folia 2.jpg|Folia}} | {{Inventory image|File:Folia 2.jpg|Folia}} | ||
| + | The '''Folia''' field of the [[Calcite (Inventory)|Calcite]] section should be used to record any observation of folia. | ||
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| + | Folia are horizontal growths of calcite usually occurring on overhanging walls. They appear much like inverted [[Calcite (Inventory)/Rimstone Dam|rimstone dams]]. | ||
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| + | Folia are concentrated around pool surfaces and are strongly associated with [[Calcite (Inventory)/Raft|calcite rafts]]. They are believed to form when CO<sub>2</sub> bubbles strike the ceiling or an overhanging wall and cause calcite to precipitate from the water. They may also form from frequent changes in water level leaving behind horizontal deposits. | ||
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| + | Folia ribs project from the wall between 1 and 5 cm with a thickness of each rib about 0.5-1 cm. Each rib is usually spaced between 1 and 5 cm apart. | ||
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| + | Folia have also been observed in mud. | ||
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==See also== | ==See also== | ||
*[[Calcite (Inventory)/Raft|Calcite raft]] | *[[Calcite (Inventory)/Raft|Calcite raft]] | ||
| + | *[[Calcite (Inventory)/Rimstone Dam|Rimstone dam]] | ||
==References== | ==References== | ||
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*Palmer, Arthur N. (2007) ''Cave Geology'' CAVE BOOKS, Dayton, OH p 277 ISBN-13: [[Special:Booksources/978-0-939748-66-2|978-0-939748-66-2]], ISBN-10: [[Special:Booksources/0-939748-66-5|0-939748-66-5]] | *Palmer, Arthur N. (2007) ''Cave Geology'' CAVE BOOKS, Dayton, OH p 277 ISBN-13: [[Special:Booksources/978-0-939748-66-2|978-0-939748-66-2]], ISBN-10: [[Special:Booksources/0-939748-66-5|0-939748-66-5]] | ||
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Revision as of 00:51, 25 March 2012
The Folia field of the Calcite section should be used to record any observation of folia.
Folia are horizontal growths of calcite usually occurring on overhanging walls. They appear much like inverted rimstone dams.
Folia are concentrated around pool surfaces and are strongly associated with calcite rafts. They are believed to form when CO2 bubbles strike the ceiling or an overhanging wall and cause calcite to precipitate from the water. They may also form from frequent changes in water level leaving behind horizontal deposits.
Folia ribs project from the wall between 1 and 5 cm with a thickness of each rib about 0.5-1 cm. Each rib is usually spaced between 1 and 5 cm apart.
Folia have also been observed in mud.
 Folia |
See also
References
- Hill, Carol; Paolo Forti (1997) Cave Minerals of the World (Second Edition ed.) National Speleological Society pp 73-74 ISBN: 1-879961-07-5
- Palmer, Arthur N. (2007) Cave Geology CAVE BOOKS, Dayton, OH p 277 ISBN-13: 978-0-939748-66-2, ISBN-10: 0-939748-66-5
