Community news

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 endellite is a cave mineral - al2si2o5(oh)4 2h2o [11].?

Checkout all 2699 terms in the KarstBase Glossary of Karst and Cave Terms

What is Karstbase?

Search KARSTBASE:

keyword
author

Browse Speleogenesis Issues:

KarstBase a bibliography database in karst and cave science.

Featured articles from Cave & Karst Science Journals
Chemistry and Karst, White, William B.
See all featured articles
Featured articles from other Geoscience Journals
Karst environment, Culver D.C.
Mushroom Speleothems: Stromatolites That Formed in the Absence of Phototrophs, Bontognali, Tomaso R.R.; D’Angeli Ilenia M.; Tisato, Nicola; Vasconcelos, Crisogono; Bernasconi, Stefano M.; Gonzales, Esteban R. G.; De Waele, Jo
Calculating flux to predict future cave radon concentrations, Rowberry, Matt; Marti, Xavi; Frontera, Carlos; Van De Wiel, Marco; Briestensky, Milos
Microbial mediation of complex subterranean mineral structures, Tirato, Nicola; Torriano, Stefano F.F;, Monteux, Sylvain; Sauro, Francesco; De Waele, Jo; Lavagna, Maria Luisa; D’Angeli, Ilenia Maria; Chailloux, Daniel; Renda, Michel; Eglinton, Timothy I.; Bontognali, Tomaso Renzo Rezio
Evidence of a plate-wide tectonic pressure pulse provided by extensometric monitoring in the Balkan Mountains (Bulgaria), Briestensky, Milos; Rowberry, Matt; Stemberk, Josef; Stefanov, Petar; Vozar, Jozef; Sebela, Stanka; Petro, Lubomir; Bella, Pavel; Gaal, Ludovit; Ormukov, Cholponbek;
See all featured articles from other geoscience journals

Search in KarstBase

Your search for holes (Keyword) returned 468 results for the whole karstbase:
Showing 16 to 30 of 468
The Formation of Potholes in North-West Clare [Ireland], 1966, Tratman E. K.

The formation of bauxite on karst topography in Eufaula District, Alabama, and Jamaica, West Indies, 1966, Clarke Om,
Bauxite deposits are formed on karst topography because the sinkholesentrap aluminous materials subject to laterization. In the Jamaican deposits, these primary aluminous materials are mainly residuum from the White Limestone Formation, but may include some volcanic ash. In the Eufaula deposits, the source materials were kaolinitic claysderived from weathering of crystalline rocks of the Piedmont. The sinkholes provide downward drainage, and deposits formed in them are protected from erosion

River Cave, Cooleman Plain, Kosciusko National Park, And Its Hydrological Relationships, 1969, Jennings, J. N.

River Cave is a Zwischenhohle (between-cave) in which the active river passage is reached through a former tributary stream passage from a dry valley. Now vadose in character, it is of gentle gradient, with some normally and some temporarily water-filled reaches of shallow phreatic nature. There is only a single level of development. Water tracing has confirmed previous inferences that it is mainly fed from the South Branch watersink, that its normal flow goes to the Blue Waterholes, the main rising of the Plain, and that there is flood overflow to Murray Cave, which is shown to have been formerly the normal outflow cave of the system. In the changeover from one outflow point (Vorfluter) to another, a shorter, steeper cave and longer surface course has been replaced by a longer cave of shorter gradient. Ev's Cave, a flood inflow cave of the South Branch, may also feed River Cave and Keith's Faint Cave is inferred to be part of the link between South Branch Sink and River Cave. It has the aspect of an early stage of vadose development from phreatic conditions. Previous interpretation of Glop Pot as a true phreatic relic is maintained in the light of new facts. Evidence is lacking with which to date the caves at all reliably. Glop Pot possibly belongs to a phase of surface planation of Tertiary age whereas the other caves are likely to be consequent on Pleistocene dissection. The tributary passage of River Cave and its associated dry valley may have lost their stream in the Holocene when Murray Cave became intermittent in action also. The Murray Cave event is due to subterranean piracy associated with rejuvenation whereas the loss of the tributary stream is probably in part due to increasing warmth and less effective precipitation.


Cooleman and Right Cooleman Caves, Kosciusko National Park, and the Shift of Risings, 1971, Jennings, J. N.

The Cooleman-Right Cooleman system is an abandoned, nearly horizontal outflow cave of shallow phreatic nature, modified by breakdown. It lies just inside and parallel to a gorge wall of Cave Creek. This relationship, and others like it here, are attributed to a greater water input into the limestone along the lines of dissection of Cooleman Plain rather than to the mechanical effects of slope retreat such as Renault has favoured. This outflow cave has been replaced as the major rising of this karst by the Blue Waterholes a short distance down valley; shallow incision of the valley has accompanied the shift of the rising. This down valley movement does not seem to be explicable by removal of overlying impervious beds in this direction to expose more limestone but by a displacement of the main artery feeding the risings in the course of the deepening of underground karst development as a result of incision. However, this displacement is not more favourable to the emergence of the underground drainage of the Plain as a whole. The downstream shift of the rising therefore remains problematic. Discussion favours interpretation of Cooleman Cave entrance as a secondary breach into the outflow cave previously emerging at Right Cooleman entrance, aided by lateral erosion of the surface stream, but it is recognised that the evidence is far from conclusive.


Seminar on Karst Denudation - The Blue Waterholes, Cooleman Plain, N.S.W. and the problem of Karst Denudation rate determination, 1972, Jennings J. N.

Observations at the Blue Waterholes, March 1965 to April 1969 limestone solution on Cooleman Plain, N.S.W., 1972, Jennings J. N.

The analysis of growth patterns of two generations; the example of karst sinkholes, 1972, Drake J. J. , Ford D. C.

Observations at the Blue Waterholes, March 1965 - April 1969, and Limestone Solution on Cooleman Plain, N.S.W., 1972, Jennings, J. N.

After brief descriptions of the geomorphology of the Cooleman Plain karst and in particular of the Blue Waterholes, the methods adopted to analyse the functioning of these major risings are detailed. The discharge regime of Cave Creek below them is oceanic pluvial in type perturbed by drought and snow. There is much annual variation both in seasonal incidence and total amount, with catchment efficiency correspondingly variable. Suspended sediment concentration is even more erratic and monthly determinations are inadequate for calculating corrasional denudation rates. Mean concentrations of suspended solids are about 1/18th of solute load. Total dissolved salts have a strong inverse relationship with discharge, and mean values are high compared with those for other catchments in eastern Australia but none of these determinations are from limestone catchments. Sodium, potassium, and chlorine contents are low compared with the same catchments but silica is relatively high. The ratio of alkaline earths to alkalis indicate that Cave Creek carries carbonate waters and there is an inverse regression of the ratio on discharge. There is inverse correlation of total hardness on discharge likewise due to concentration of surface waters by evaporation in dry periods, together with reduced underground solution rate at times of large, rapid flow. The spring waters remain aggressive. Close regressions of hardness on specific conductivity now permit the latter to be determined in the place of the former. Much evidence converges to indicate that all the springs at the Blue Waterholes are fed from the same conduit. The intermittent flow which comes down the North Branch on the surface to the Blue Waterholes differs significantly in many characters from the spring waters. Rates of Ca + M carbonate equivalent removal vary directly with discharge since hardness varies much less than does water volume. These gross rates have to be adjusted for (a) atmospheric salts entering the karst directly, (b) peripheral solute inputs from the non-karst two-thirds of the catchment and (c) subjacent karst solution before they can be taken as a measure of exposed karst denudation. The methods for achieving this are set out. The total corrections amount to about one third of the total hardness, though the correction for subjacent karst on its own lies within the experimental error of the investigation. The residual rate of limestone removal from the exposed karst also shows a winter/spring high rate and a summer/autumn low rate but the seasonal incidence and annual total varied very much from year to year. In comparison with results from karsts in broadly similar climate, the seasonal rhythm conforms and so does the high proportion (78%) of the solution taking place at or close to the surface. This reduces the importance of the impounded condition of this small karst but supports the use of karst denudation rate as a measure of surface lowering. Cave passage solution may however be more important in impounded karst than its absolute contribution might suggest, by promoting rapid development of underground circulation. The mean value of limestone removal is low for the climatic type and this is probably due to high evapotranspirational loss as well as to the process of eliminating atmospheric, peripheral non-karst and subjacent karst contributions. The difficulties of applying modern solution removal rate to the historical geomorphology of this karst are made evident; at the same time even crude extrapolations are shown to isolate problems valuably.


Fluorescent dye determination of groundwater movement and contamination in permeable rock strata., 1973, Giammona Charles P.
A preliminary inquiry to the extent and boundaries of subterranean waterways within the Mystery Cave System was explored. Rhodamine WT dye in 500 ml quantities was used in fluormetry determinations of surface flow to ground water basins. A Turner Model 111 fluorometer was utilized for detection purposes powered by a portable 12 volt, 220 amp hour battery-inverter system. It was shown that water entered underground passageways through sinkholes or highly creviced limestone/dolomite rock strata and reappeared several kilometres downstream. The outflow appears in the form of "springs". The possibility exists that contaminated surface water may seep through the soil for long distances. It is obvious there is acute danger of underground contamination of municipal and private water supplies situated in this area.

Fluorescent dye determination of groundwater movement and contamination in permeable rock strata., 1973, Giammona Charles P.
A preliminary inquiry to the extent and boundaries of subterranean waterways within the Mystery Cave System was explored. Rhodamine WT dye in 500 ml quantities was used in fluormetry determinations of surface flow to ground water basins. A Turner Model 111 fluorometer was utilized for detection purposes powered by a portable 12 volt, 220 amp hour battery-inverter system. It was shown that water entered underground passageways through sinkholes or highly creviced limestone/dolomite rock strata and reappeared several kilometres downstream. The outflow appears in the form of "springs". The possibility exists that contaminated surface water may seep through the soil for long distances. It is obvious there is acute danger of underground contamination of municipal and private water supplies situated in this area.

Donnees geomorphologiques sur la region de Fresh Creek, Ile Andros (Bahama), 1974, Bourrouilh F,
A geomorphological study of the east coast of Andros (Fresh Creek area) shows the existence of a paleotopography represented by low-altitude hills (few metres). This paleotopography is protected by the presence of a calcitic Quaternary crust which covers Pleistocene calcarenite.In the western part of the area, there are long woody axes, oriented NE-SW, parallel to the channels of the creek. They end at two kilometres from the coast, along which is a second kind of lower hills, orthogonal to the first.The first axes can be interpreted as megaripples as seen at the present time on modern deposits (on the Great Bahama Bank) and fossilized by the upper crust. The second direction is made by accretion ripples along the coast.The surface of the Bahamian calcarenite has been studied. The Bahamian karst presents two topographical forms: “blue holes” like those outside the island, which are 60-80 m in diameter and both sparse and deep; and “washtub” dolines; these are numerous and shallow, and, from low altitude, exhibit a honeycombed aspect on the surface. This karstic topography with dolines and blue holes is also seen through the water of the Creek the hard bottom of which is covered only here and there with a few centimetres of sediments. Hence, there is a submerged karstic topography, made of the same elements as the aerial karst, but submerged by the Holocene transgression. The present karstic relief, in relation with the different eustatic levels of the Quaternary, has begun 120,000 years ago, according to the isotopic ages, and might be composed by different steps, difficult to show now, in the topography.The blue holes in the interior of the island of young and little evolved karst, were formed more by solution than by collapse of the karstic caves, because of the absence of a real river to drain the Andros shelf at the time of low sea levels. Blue holes of the inside of the island, as they are called, with submarine openings, have the same salinity as the water of the creek (17.5 g/l). The dolines with very low salinity (0.7 g/l to 3.8 g/l) are filled with stromatolites and charophytes, slowly forming sediments made up essentially of high-magnesian calcite.It seems that the Andros Island karst can be compared with that of the Yucatan, where there are round and deep open pits, called cenote, of which the Bahamian equivalent would be the blue holes which were drowned by the Holocene transgression.ResumeSur l'ile Andros, zone emergee du Grand Banc de Bahama, l'auteur montre l'existence d'une paleotopographie comprenant deux categories de rides d'orientation differente et semblant fossilisee par une croute calcitique recente et l'existence d'un karst aux formes jeunes, bien qu'heritage d'un karst holocene en voie de submersion. Ces formes sont des “blue holes” ou trous bleus circulaires (60 a 80 m de diametre) et peu nombreux, et des dolines, dites en baquet. Dans ces dolines se deposent actuellement des croutes stromatolithiques calcitiques dont l'etude est faite par diffractometrie de rayons X et microscopie electronique a balayage

Rapid groundwater flow in fissures in the chalk: an example from south Hampshire, 1974, Atkinson Tc, Smith Di,
Projected road improvements in south Hampshire included plans to dispose of surface drainage into soakaways to be sited near an area of swallow holes in the Chalk. An experiment was undertaken to establish if there was a direct connection between the swallow holes, located near the junction of the Chalk and the Lower Tertiary strata, and major springs used for water supply in the Havant area. As the swallow holes are dry except in periods of storm rainfall a tracer, the fluorescent dye Rhodamine WT, was injected together with a large volume of water into one of the swallow holes. Water samples were collected from the springs at Havant and analysed for Rhodamine WT using a Turner fluorometer. The tracer was found at both sets of springs sampled and the straight line velocity from input point to spring was in excess of 2 km per day. Computations based on the concentration of dye recovered from the springs show that in the event of a tanker spillage within the proposed drainage scheme severe contamination would be expected to occur at the springs. The experiment and the results obtained make it clear that extreme caution should be exercised to avoid contamination of fissure-flow within the Chalk aquifer

Investigations into the vertical distribution of organisms and chemical substances in the groundwater in valleys and terraces; methods and first results., 1975, Husmann Siegfried
In the alluvial ground of the river Fulda valley and in the diluvial terrace of the river Weser assortments of tubes of various lengths were sunk into sandy and gravely underground to bring to light groundwater of different depths. The installation of these groundwater pump stations was effectuated by two different methods: 1. with the aid of an apparatus for bringing down bore-holes, 2.by ramming in the pump tubes with the aid of a pneumatic hammer. The first biological and chemical investigations in these subterranean water research stations indicated that the vertical distribution of groundwater organisms and chemical substances in special cases may depend on the nature of subterranean water currents and the infiltration of polluted water into the sandy and gravely underground of valleys and terraces.

Stratigraphy and origin of surficial deposits in sinkholes in South-central Indiana, 1976, Hall R. D. ,

A study of fresh water lens configuration in the Cayman Islands using resistivity methods, 1976, Bugg Sf, Lloyd Jw,
The problems of identifying the base of fresh water lenses in oceanic islands are discussed. A study carried out in the Cayman Islands is described in which the lens base is defined in relation to potable water standards and mapped using surface resistivity measurements with salinity profile controls in boreholes. Using depth-salinity ratios the piezometric surface is then determined. The technique is considered to provide a reliable cheap and rapid method of obtaining lens geometry in oceanic islands particularly where fairly homogeneous lithologies are present

Results 16 to 30 of 468
You probably didn't submit anything to search for