Corrosion residue (Inventory)

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[[File:Cr yellow and red.jpg|thumb|Corrosion residues. Most of the corrosion residue in this photo is yellow. The darker residue is red.]]
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'''Corrosion residues''' are relatively insoluable minerals which were once part of the bedrock. They were left behind and concentrated when the bedrock was dissolved. They are the waste products from bacterial processes which utilize manganese and iron in the rock for energy.
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'''Corrosion residues''' are relatively insoluable minerals which were once part of the bedrock. They were left behind and concentrated when the bedrock was dissolved. On the ''CCNP Cave Inventory Form'', the [[Recorder (Inventory)|recorder]] is asked only to distinguish them by color. There are three color categories on the form: red, brown and yellow. They can usually be found on the floor but could appear in cracks or [[vug]]s or on shelves and ledges. They could even appear as a type of crust or coating.
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On the ''CCNP Cave Inventory Form'', the [[Recorder (Inventory)|recorder]] is asked only to distinguish them by color. There are three color categories on the form: red, brown and yellow. They can usually be found on the floor as fluffy, colored soils (speleosols) but could appear in cracks or [[Glossary (Inventory)#Vug|vug]]s or on shelves and ledges. They could even appear as a type of crust or coating. Several colors could be present at a single location. Many caves in the Guadalupes have exceptional examples of corrosion residue. The individual grains of a corrosion residue accumulation are often arranged in tiny [[Glossary (Inventory)#Fractal|fractal]] patterns indicating a biological origin.
The ''CCNP Cave Inventory Form'' asks the recorder to include the thickness if possible. An estimate of how thick the accumulation is should be included next to the station.
The ''CCNP Cave Inventory Form'' asks the recorder to include the thickness if possible. An estimate of how thick the accumulation is should be included next to the station.
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==Red CR==
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==Fields==
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[[File:RedCR.JPG|thumb|Red corrosion residue]]
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*[[Corrosion residue (Inventory)/Red CR|Red CR]]
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The '''Red CR''' field is used to record stations where red corrosion residue is found. The red is usually a rusty red color.
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*[[Corrosion residue (Inventory)/Brown CR|Brown CR]]
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*[[Corrosion residue (Inventory)/Yellow CR|Yellow CR]]
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==Brown CR==
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[[File:BrCR.JPG|thumb|Brown corrosion residue]]
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The '''Brown CR''' field is used to record stations where brown corrosion residue is found.
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==Yellow CR==
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The '''Yellow CR''' field is used to record stations where yellow corrosion residue is found. The yellow is usually a kind of dirty yellow color.
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==Example==
==Example==
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==See also==
==See also==
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*[[Residual red clay (Inventory)|Residual red clay]]
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*[[Clays (Inventory)/Residual red clay|Residual red clay]]
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==References==
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*Palmer, Arthur N. (2007) ''Cave Geology'' CAVE BOOKS, Dayton, OH pp 337-338 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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*Various (June 2004) ''Core Values'' Carlsbad Caverns National Park; as published by Bob Hoff: http://carlsbadcavernshistory.blogspot.com/2011/05/carlsbad-caverns-national-park-core.html
{{Cave inventory}}
{{Cave inventory}}
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[[Category:Needs references]]
 

Current revision as of 13:38, 24 January 2012

Corrosion residues are relatively insoluable minerals which were once part of the bedrock. They were left behind and concentrated when the bedrock was dissolved. They are the waste products from bacterial processes which utilize manganese and iron in the rock for energy.

On the CCNP Cave Inventory Form, the recorder is asked only to distinguish them by color. There are three color categories on the form: red, brown and yellow. They can usually be found on the floor as fluffy, colored soils (speleosols) but could appear in cracks or vugs or on shelves and ledges. They could even appear as a type of crust or coating. Several colors could be present at a single location. Many caves in the Guadalupes have exceptional examples of corrosion residue. The individual grains of a corrosion residue accumulation are often arranged in tiny fractal patterns indicating a biological origin.

The CCNP Cave Inventory Form asks the recorder to include the thickness if possible. An estimate of how thick the accumulation is should be included next to the station.

Contents

Fields

Example

Corrosion Residue

Red CR: GG39 (thin film)
Brown CR: GG40 (4 inches)
Yellow CR: GG37 (3 cm), 38 (2.5 cm)

See also

References


Corrosion residue (Inventory) is a part of the cave inventory project.
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