Calcite (Inventory)/Pool Finger
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*[[Calcite (Inventory)/Spar/chenille/pool|Chenille/pool spar]] | *[[Calcite (Inventory)/Spar/chenille/pool|Chenille/pool spar]] | ||
*[[Calcite (Inventory)/Shelfstone|Shelfstone]] | *[[Calcite (Inventory)/Shelfstone|Shelfstone]] | ||
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==References== | ==References== | ||
Revision as of 18:54, 3 November 2012
The Pool Finger field of the Calcite section should be used to record any observation of pool fingers.
Pool fingers are finger-like formations that appear in pools and former pools usually under shelfstone. Many pool fingers resemble soda straws but are more lumpy, have no internal canal and sometimes form loops. They look like calcite coated strings or filaments and are believed to have a biological origin that is just that: mineral coated microbial filaments.
Most pool fingers are less than 1/2 mm wide and extend downward into the pool or former pool from under shelfstone. They may be associated with other pool formations such as chenille and pool spar and even subaqueous helictites.
Look for pool fingers in pools or anywhere a former pool may have existed especially under shelfstone.
 U loop pool finger |
See also
References
- Palmer, Arthur N. (2007) Cave Geology CAVE BOOKS, Dayton, OH pp 296-297 ISBN-13: 978-0-939748-66-2, ISBN-10: 0-939748-66-5
- Hill, Carol; Paolo Forti (1997) Cave Minerals of the World (Second Edition ed.) National Speleological Society pp 86-87 ISBN: 1-879961-07-5
