Definition of tubular passage; tube; tube passage: 1. Cave passage formed by approximately equal dissolution all round when full of flowing water within the phreas. as in ... " />
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Speleology in Kazakhstan

Shakalov on 04 Jul, 2018
Hello everyone!   I pleased to invite you to the official site of Central Asian Karstic-Speleological commission ("Kaspeko")   There, we regularly publish reports about our expeditions, articles and reports on speleotopics, lecture course for instructors, photos etc. ...

New publications on hypogene speleogenesis

Klimchouk on 26 Mar, 2012
Dear Colleagues, This is to draw your attention to several recent publications added to KarstBase, relevant to hypogenic karst/speleogenesis: Corrosion of limestone tablets in sulfidic ground-water: measurements and speleogenetic implications Galdenzi,

The deepest terrestrial animal

Klimchouk on 23 Feb, 2012
A recent publication of Spanish researchers describes the biology of Krubera Cave, including the deepest terrestrial animal ever found: Jordana, Rafael; Baquero, Enrique; Reboleira, Sofía and Sendra, Alberto. ...

Caves - landscapes without light

akop on 05 Feb, 2012
Exhibition dedicated to caves is taking place in the Vienna Natural History Museum   The exhibition at the Natural History Museum presents the surprising variety of caves and cave formations such as stalactites and various crystals. ...

Did you know?

That geological organ is a cylindrical or funnelshaped cavity in relatively soluble bedrock which typically has a vertical orientation and is partly or wholly filled with material similar to the overlying sediment cover. they are produced by solution of bedrock and concomitant subsidence of its sedimentary cover. most have a diameter of 25 cm to 7 m and a depth of 2 to 30 m, but some may be much larger. a depth/diameter ratio of 5 to 20 may be considered representative. in actuality, geological organs are a type of subsidence doline that develops under a cover of younger rock or sediment [17]. synonyms: (french.) orgue geologigue, poche de dissolution, puits naturel; (belgian.) abannet, cavite de dissolution; (german.) geologische orgel, orgel, unterirdische doline, verwitterungssacke, naturlicher schacht, erdorgel, erdpfeife, riesentoph, bodenkarren, (british.) sand pipe, sand-gall, gravel-pipe, pipe, pocket deposit, gull; (italian.) organo geologico; (roumanian.) orgile geologice; (czech.) geologicke varhany; (polish.) organy geologiczne; (russian.) organnaya truba, kamin; (serbo-croatian.) geoloske orgulje; (slavic) geoloske orglje, zapolvje jaski; (dutch.) geologische orgelpijp, aardpijp.?

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Featured articles from Cave & Karst Science Journals
Chemistry and Karst, White, William B.
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Glossary of Karst and Cave Terms

Based on "A Lexicon of Cave and Karst Terminology with Special to Environmental Karst Hydrology" EPA/600/R-02/003, 2002, EPA: Washington, DC., Speleogenesis Glossary includes 2699 cave & karst terms

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tubular passage; tube; tube passage

1. Cave passage formed by approximately equal dissolution all round when full of flowing water within the phreas. Relict tubes, abandoned as the water table was lowered, are common in old caves, and may be partially filled by sediment, breakdown or stalagmite, or entrenched to form keyhole passages. Tube sizes range to over 15m in diameter, but the larger ones are rarely of uniform section. Peak Cavern in Derbyshire is well known for its fine circular phreatic tubes. Some of the trunk passages of Mammoth Cave, Kentucky, are spectacular tubes of elliptical section, formed by dissolution rates that were higher along the bedding than across [9]. 2. These are nearly horizontal cave passages (tunnels) with round or elliptical cross sections and are either straight or winding. At Mammoth Cave they vary in size up to 30 feet high and nearly 100 feet wide. They are formed while completely filled with flowing water. Whereas they are typically wider than high as a result of dissolution along horizontal cracks and beddingplane partings, they may also form as high, narrow, straight fissures along major vertical or near vertical fractures [15]. See also canyon passage; keyhole passage; passage; vertical shaft.

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