Calcite (Inventory)/Shelfstone
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{{Inventory image|File:Shelfstone.jpg|Shelfstone around a [[Water (Inventory)/Pool|pool]]. Note the guano; it and the pool should be inventoried separately.}} | {{Inventory image|File:Shelfstone.jpg|Shelfstone around a [[Water (Inventory)/Pool|pool]]. Note the guano; it and the pool should be inventoried separately.}} | ||
| + | The '''Shelfstone''' field of the [[Calcite (Inventory)|Calcite]] section should be used to record any observation of shelfstone. | ||
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| + | Shelfstone is a flat ledge of calcite that grew at the edge of a [[Water (Inventory)/Pool|pool]]. It extends inwardly creating a ledge above the water. They can also form around other speleothems such as [[Calcite (Inventory)/Column|columns]] and [[Calcite (Inventory)/Stalagmite|stalagmites]] to form tables and lily pads. | ||
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| + | Shelfstone forms at the pool surface and if the pool level changes over time, multiple levels of shelfstone can form. Shelfstone can be left high and dry when a former pool has dropped or disappeared. Its presence indicates a former pool level or [[Water (Inventory)/Paleo-Waterline|paleo-waterline]]. Shelfstone is usually only a few centimeters thick but its width can vary greatly even up to several meters. [[Calcite (Inventory)/Spar/chenille/pool|Chenille/Pool spar]], [[Calcite (Inventory)/Pool Finger|pool fingers]] and [[Calcite (Inventory)/Helictite/subaqueous|subaqueous helictites]] can be found under shelfstone so be sure to examine it for these speleothem types. | ||
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| + | Look for shelfstone at the edges of any pool or former pool. | ||
==See also== | ==See also== | ||
*[[Water (Inventory)/Pool|Pool]] | *[[Water (Inventory)/Pool|Pool]] | ||
| + | *[[Water (Inventory)/Paleo-Waterline|Paleo-Waterline]] | ||
*[[Calcite (Inventory)/Spar/chenille/pool|Chenille/pool spar]] | *[[Calcite (Inventory)/Spar/chenille/pool|Chenille/pool spar]] | ||
*[[Calcite (Inventory)/Pool Finger|Pool finger]] | *[[Calcite (Inventory)/Pool Finger|Pool finger]] | ||
| + | *[[Calcite (Inventory)/Helictite/subaqueous|Subaqueous helictite]] | ||
==References== | ==References== | ||
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*Palmer, Arthur N. (2007) ''Cave Geology'' CAVE BOOKS, Dayton, OH p 278 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 278 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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{{Cave inventory}} | {{Cave inventory}} | ||
Revision as of 13:14, 29 March 2012
The Shelfstone field of the Calcite section should be used to record any observation of shelfstone.
Shelfstone is a flat ledge of calcite that grew at the edge of a pool. It extends inwardly creating a ledge above the water. They can also form around other speleothems such as columns and stalagmites to form tables and lily pads.
Shelfstone forms at the pool surface and if the pool level changes over time, multiple levels of shelfstone can form. Shelfstone can be left high and dry when a former pool has dropped or disappeared. Its presence indicates a former pool level or paleo-waterline. Shelfstone is usually only a few centimeters thick but its width can vary greatly even up to several meters. Chenille/Pool spar, pool fingers and subaqueous helictites can be found under shelfstone so be sure to examine it for these speleothem types.
Look for shelfstone at the edges of any pool or former pool.
See also
References
- Hill, Carol; Paolo Forti (1997) Cave Minerals of the World (Second Edition ed.) National Speleological Society pp 97-98 ISBN: 1-879961-07-5
- Palmer, Arthur N. (2007) Cave Geology CAVE BOOKS, Dayton, OH p 278 ISBN-13: 978-0-939748-66-2, ISBN-10: 0-939748-66-5
