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Enviroscan Ukrainian Institute of Speleology and Karstology


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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 conical wall niche is see meander niche.?

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


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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;
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Your search for chalk (Keyword) returned 87 results for the whole karstbase:
Showing 16 to 30 of 87
Chalk Caves Revisited, 1992,
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Lowe D. J.

Forum : The ''Problem'' of Chalk Caves - A Reply, 1992,
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Lowe D. J.

Forum : The ''Problem'' of Chalk Caves, 1992,
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Mullan G. J.

La grotte du Funiculaire (Le Mesnil-sous-Jumiges, Seine-Maritime), splogense et tude dun remplissage ferro-manganique, 1993,
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Coquerel G. , Lefebvre D. , Rodet J. , Staigre J. C.
The Funicular Cave is a major cave of the Lower Seine Completely excavated 40 years ago by its owner, it presents a spatial organisation model of drains for the paleokarsts of the great valley. Among the infillings, we discovered a brown-black deposit with a surprising concentration of 90% iron and of 7% manganese, without organic matter or nickel mineral.

The Chalk as an aquifer, 1993,
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Price M. , Downing R. A. , Edmunds W. M.

SPELEOGENESIS IN AEOLIAN CALCARENITE - A CASE-STUDY IN WESTERN VICTORIA, 1994,
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White S. ,
Most studies of karst landscapes and their processes have been concerned with consolidated, often well-jointed limestones. There are particular problems involved in the study of karst procesess in softer, less-compact limestones such as chalk, coral reefs, and aeolian calcarenite. Previous studies in aeolian calcarenite indicated these problems and a scheme was developed of speleogenesis in aeolian calcarenite. A study of karst processes in aeolian calcarenite at Bats Ridge in western Victoria has developed this scheme further. The karst features and processes at Bats Ridge are an integral part of the landscape of a mid-Pleistocene calcarenite dune system. The resolution of problems of the rapid subaerial speleogenesis in the area is achieved by the synthesis of the known karst features of the ridge and the geology and geomorphology of the area. Karst development on this aeolianite ridge depends on lithological conditions as well as the availability of aggressive water capable of solution. The diagenesis of the calcarenite is occurring now and must have been occurring by the mid-Pleistocene. This simultaneous lithification of the carbonate dunes into aeolian calcarenite rock and the development of solutional karst features in the dunes is the characteristic feature of the speleogenesis in this area. It is the formation of a hardened kankar layer (cap rock) in the dunes of sufficient compressive and tensile strength to support cavities, which is the result of these interrelated factors, that has strongly determined the formation of the karst features

Strengthening of soils during construction under chalk karst conditions, 1994,
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Zhivoderov V. ,

Numerical multisource and multiscale imagery in the study of the topographic surface. Hydrogeological application in a karstic environment: Verneuil-sur-Avre (Perche, France), 1996,
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Sykioti O. , Deffontaines B. , Chorowicz J. , Obert D. , Demarsily G. , Lauverjat J. , Carvalho J. ,
We propose a new method revealing geological structures and their possible relationships with water percolation. It is based on a combination of (1) numerical analysis of the topography (satellite imagery Landsat TM, HCMM, SAR-ERS1; digital elevation model and derived data: drainage network, slope map, summit level surfaces...); (2) classic geological approach (field work, geological mapping, gravimetry); and (3) hydrogeological approach (piezometric map, tracer experiments). The superimposition of these data into a geocoded data base leads to the identification and the location of morphostructures (synthetic structural map). Field data and tracer experiments confirm the validity of the results. We propose to take into consideration the present day stress regime in order to define main orientations of open fractures. In conclusion, this method provides structural information allowing a better understanding of geometry in karstic aquifers

New geometric organization of the chalk karst drainage: The weathering mesh-network of the Mansonniere cave system (Bellou-sur-Huisne, Orne, France), 1996,
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Rodet J. ,
The Mansonniere karst system presents a labyrinthic network opened on a tectonic pattern near the fault of Belleme. It is the first known chalk karst system of over 1 km explored galleries in the world. This is also the standard model of a karst system set on a tectonic mesh, developed in a chalk plateau without a detritic cover, showing specific processes. The great karst maze is in fact a poorly drained network but still a functional one which progresses by coalescent weathering fronts, in the tectonic network. This kind of pattern is specific of a primitive degree of karstification

Discussion on 'The Chalk as a karstic aquifer: evidence from a tracer test at Stanford Dingley, Berkshire, UK': Quarterly Journal of Engineering Geology, 28, S31-S38, 1996,
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Banks D, Davies C, Davies W,
M. Price writes: Banks et al. (1995) address the nature of the permeability of parts of the Chalk aquifer, provide useful data from a tracer test, and draw attention to the potential dangers of disposing of agricultural and road run-off to swallow holes. The paper includes a calculation of fissure conductivity and aperture from the results of the tracer test. In this it has to be emphasized that the calculations relate to Darcian flow in an equivalent smooth, plane, parallel-plate opening, not the more likely turbulent flow in a natural fissure. The true average aperture of the fissure is therefore likely to be significantly greater than that calculated (Price 1987, 1996). The situation described at Stanford Dingely is one where drainage originating from impermeable Tertiary strata flows onto the Chalk and sinks into the aquifer. The majority of active Chalk sinks appear to be of this type; the drainage sinking into them originates as run-off from other strata. Rain falling anywhere on the outcrop of the Chalk is normally able to infiltrate, so water flowing across the Chalk outcrop is almost invariably allogenic drainage or water that has infiltrated the Chalk and emerged as baseflow. Drainage to sinks is therefore a minor component of recharge to the Chalk. The tracer test undertaken into at Stanford Dingley involved introducing tracer into a known point of entry in the aquifer, and observing its arrival at a known point of emergence. Such tests almost inevitably measure the speed of groundwater movement along a ... This 250-word extract was created in the absence of an abstract

Rillenkarren in the British Isles, 1996,
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Vincent P. ,
This paper presents the first descriptions of rillenkarren in the British Isles. Rillenkarren are widely developed at two 'classic' karst locations, namely: the Burren coast of Co. Clare, Ireland, and the Morecambe Bay area of north west England. Rillenkarren are also found on hard Cretaceous chalks of Northern Ireland and Carboniferous limestones on the Anglesey coast, north Wales. The limestones at all sires are very hard, extremely pure and dolomite poor. A logit regression model is developed, based on published rillenkarren data from the Napier Range, Western Australia. The model suggests that the two rock properties, % calcite in the rock fabric and % calcite in the micrite cement are key variables in explaining the presence of rillenkarren. Within the context of the model, these two explanatory variables define a feasible domain for the development of rillenkarren. British rillenkarren data satisfy the conditions of this model

The Chalk as a karstified aquifer: closed circuit television images of macrobiota, 1997,
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Waters A. , Banks D. ,
The use of closed circuit television (CCTV) imaging in the Chalk aquifer of the Thames catchment of southern England, has shed much light on the aquifer's flow mechanisms. CCTV images indicate that flow to a Chalk abstraction borehole is typically via a limited number of highly transmissive solutionenhanced fracture features. These bear some similarities to conduits found in true karstic aquifer systems, and have implications for the modelling of mass transport in the Chalk aquifer. Another feature, typical of karst aquifers, noted during CCTV surveys is the occasional presence of macroscopic biota, arthropods and annelids, apparently inhabiting the Chalk aquifer system

An investigation, using the chalk karst of Haute-Normandie (France), as an example of the relationships between the surface and endokarst using a granulometric method, 1998,
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Lacroix M. , Leboulanger T. , Wang H. Q. , Feeny V. , Dupont J. P. , Meyer R. ,
Karst, by definition, is the result of rock dissolution. Ii the rock is not completely soluble, residues will remain ('acquired' particles). This insoluble material, present in the springs issuing From the karst body after some time lag, provides information regarding karst processes taking place within the rock body. The presence of pathways between the surface and the endokarst is reflected by an increase in the suspended particulate material (SPM) that may be considered to be 'inherited' from outside of the karst system, By the study of microgranulometric spectra the origins of the particles are differentiated and, on this basis, a classification of karst systems is proposed. The technique was applied to the chalk karat of Haute Normandie (France) by obtaining characterisations of the microgranulometric fraction of the main surface formations (clay-with-flints and loess) and that produced by dissolution of the chalk. By the comparison of these spectra with those of the SPM contained in ten karst springs, it was possible to define two types of karsts ('open' and 'closed') and their intermediates. In 'closed' karst a majority of the particles originated from the dissolution of the chalk itself, while in the 'open' karst, the majority of the particles are derived from the surface formations. This notion of 'aperture' is quite different from the conventional allogenic/authigenic karst classification which implies the formation of an impermeable residual soil that focuses surface water inputs

Mise en evidence des relations surface-endokarst par la microgranulometrie, exemple du karst crayeux haut-normand, 1998,
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Lacroix Michel, Leboulanger Thierry, Wang Huaqing, Feeny Veronique, Dupont Jean Paul, Meyer Robert,
Karst, by definition, is the result of rock dissolution. If the rock is not completely soluble, residues will remain ('acquired' particles). This insoluble material, present in the springs issuing from the karst body after some time lag, provides information regarding karst processes taking place within the rock body. The presence of pathways between the surface and the endokarst is reflected by an increase in the suspended particulate material (SPM) that may be considered to be 'inherited' from outside of the karst system. By the study of microgranulometric spectra the origins of the particles are differentiated and, on this basis, a classification of karst systems is proposed. The technique was applied to the chalk karst of Haute Normandie (France) by obtaining characterisations of the microgranulometric fraction of the main surface formations (clay-with-flints and loess) and that produced by dissolution of the chalk. By the comparison of these spectra with those of the SPM contained in ten karst springs, it was possible to define two types of karsts ('open' and 'closed') and their intermediates. In 'closed' karst a majority of the particles originated from the dissolution of the chalk itself, while in the 'open' karst, the majority of the particles are derived from the surface formations. This notion of 'aperture' is quite different from the conventional allogenic/authigenic karst classification which implies the formation of an impermeable residual soil that focuses surface water inputs

Evidence for rapid groundwater flow and karst-type behaviour in the Chalk of southern England, 1998,
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Macdonald A. M. , Brewerton L. J. , Allen D. J. ,
With the growing importance of groundwater protection, there is increasing concern about the possibility of rapid groundwater flow in the Chalk of southern England and therefore in the frequency and distribution of karstic' features. Pumping test data, although useful in quantifying groundwater resources and regional flow, give little information on groundwater flow at a local scale. Evidence for rapid groundwater flow is gathered from other, less quantifiable methods. Nine different strands of evidence are drawn together: tracer tests; observations from Chalk caves; Chalk boreholes that pump sand; descriptions of adits; the nature of water-level fluctuations; the Chichester flood; the nature of the surface drainage; geomorphological features; and the presence of indicator bacteria in Chalk boreholes. Although the evidence does not prove the widespread existence of karstic features, it does suggest that rapid groundwater flow should be considered seriously throughout the Chalk. Rapid groundwater flow is generally more frequent close to Palaeogene cover and may also be associated with other forms of cover and valley bottoms

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