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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 geomorphic process is the process responsible for the formation and alteration of the earth's surface [16].?

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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.
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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 returns (Keyword) returned 7 results for the whole karstbase:
Evaporite karst of northern lower Michigan, 1997, Black Tj,
Michigan has three main zones of evaporite karst: collapse breccia in Late Silurian deposits of the Mackinac Straits region; breccia, collapse sinks, and mega-block collapse in Middle Devonian deposits of Northern Lower Michigan, which overlaps the preceding area; and areas of soil swallows in sinks of Mississippian deposits between Turner and Alabaster in Arenac and Iosco counties, and near Grand Rapids in Kent County. The author has focused his study on evaporite karst of the Middle Devonian deposits. The Middle Devonian deposits are the Detroit River Group: a series consisting of limestone, dolomite, shale, salt, gypsum and anhydrite. The group occurs from subcrop, near the surface, to nearly 1400 feet deep from the northern tip of the Southern Peninsula to the south edge of the ''solution front'' Glacial drift is from zero to 350 feet thick. Oil and gas exploration has encountered some significant lost-circulation zones throughout the area. Drilling without fluid returns, casing seal failures, and lost holes are strong risks in some parts of the region. Lost fluid returns near the top of the group in nearby areas indicate some karst development shortly after deposition. Large and irregular lost-circulation zones, linear and patch trends of large sink holes, and 0.25 mile wide blocks of down-dropped land in the northern Lower Peninsula of Michigan were caused by surface- and ground-water movement along faults into the Detroit River Group. Glaciation has removed some evidence of the karst area at the surface. Sinkhole development, collapse valleys, and swallows developed since retreat of the glacier reveal an active solution front in the Detroit River Group

Seasonal Effects on the Geochemical Evolution of the Logsdon River, Mammoth Cave, Kentucky., 1998, Anthony, Darlene M. , Ms

The following research describes the collection and evaluation of geochemical data from the Logsdon River, an open-flow conduit that drains a portion of the Turnhole Spring drainage basin within the Mammoth Cave karst aquifer of south-central Kentucky. This spatial survey of nearly 10 km of continuous base-level conduit included seasonal sampling of carbon dioxide partial pressures (PCO2), dissolved ions, and saturation indices for calcite (SIcal). The highest PCO2 are found at the upstream site closest to the Sinkhole Plain recharge area, which creates undersaturated conditions. Rapid outgassing of CO2 into the cave atmosphere creates oversaturated conditions for several thousand meters. This change in chemistry results in the accumulation of travertine in these areas. A boost in PCO2 roughly half-way through the flow path returns the water to slightly undersaturated conditions. The most likely source for additional CO2 is in-cave organic decay, as the boost also occurs during winter months when microbial activity in the soil is at a minimum. A general decline in Ca2+, Mg2+, and HCO3- concentrations occurred over the distance through the Logsdon River conduit. This decline may reflect a diluting of water by localized inputs from the Mammoth Cave Plateau and precipitation of travertine along the flow path. Although values for all parameters are greater in summer than winter, the trend in evolution is similar for both seasonal extremes.
The nature of the transition from summer to winter conditions in the aquifer was investigated by way of an intensive study of the geochemistry at the Logsdon River monitoring well. The relationship between conductivity (spC) and pH was evaluated during both seasons in an attempt to predict the activity of hydrogen for any given water sample, based on continuous spC measurements at the well. Data collected during the 1997-98 seasonal transitions supported a single, nonlinear regression equation that may represent two distinct seasonal regimes.

Exchange of water between conduits and matrix in the Floridan aquifer, 2001, Martin J. B. , Dean R. W. ,
Flow through carbonate aquifers may be dominated by conduits where they are present, by intergranular or fracture porosity where conduits are missing, or may occur in conduits and matrix porosity where both are well developed. In the latter case, the exchange of water between conduits and matrix could have important implications for water management and hydrodynamic modeling. An extensive conduit system has been mapped by dye trace studies and cave diving exploration at the Santa Fe Sink/Rise system located in largely unaltered rocks of the Floridan aquifer of north-central Florida. In this area, the Santa Fe River flows underground at the River Sink and returns to the surface similar to 5 km to the south at a first magnitude spring called the River Rise. Limited data show that discharge is greater by 27-96% at the River Rise than at the Sink and that the downstream increase in discharge is inversely related to discharge of the river. Natural SO42- concentrations indicate that similar to 25% of the water discharging from the Rise originates from the Sink during low flow. Conversely, SO42- and other solute concentrations indicate that most of the water discharging from the Rise originates from the Sink during floods. Ar similar to 40% decrease in Na () and Cl (-) concentrations over a 5 1/2-month period at a down-gradient water supply well may reflect flow of dilute flood water from the conduits into and through the matrix at rates estimated to be between 9 and 65 m/day, Calcium concentrations remain constant through time at the well, although flood waters have similar to 90% lower Ca (2) concentrations than ground water, perhaps reflecting dissolution of the matrix rocks. This apparent exchange of water between matrix and conduits is important for regional ground water quality and dissolution reactions, (C) 2001 Published by Elsevier Science B.V

Hydrogeology of the Brassington area, Derbyshire, UK, 2007, Gunn, Trevor D Ford And John.
The subterranean drainage of the partly dolomitized Carboniferous Limestone of Brassington Moor is deduced to be mainly via mineral vein fissures in both limestones and dolomites. Some of the drainage remains close to the water table and resurges without any rise of temperature, whereas other drainage circulates at depth and returns as thermal springs. Before the late 18th century drainage probably resurged at springs in the Via Gellia but these are largely inoperative having been dewatered by man-made lead mine drainage levels (soughs). Although a limited flow still comes from Cromford Sough, this in turn has been largely dewatered by the lower Meerbrook Sough, which discharges a mix of both cold and thermal waters.

Bats and bell holes: The microclimatic impact of bat roosting, using a case study from Runaway Bay Caves, Jamaica, 2009, Lundberg J And Mcfarlane D A

The microclimatic effect of bats roosting in bell holes (blind vertical cylindrical cavities in cave roofs) in Runaway Bay Caves, Jamaica, was measured and the potential impact of their metabolism on dissolution modelled. Rock temperature measurements showed that bell holes with bats get significantly hotter than those without bats during bat roosting periods (by an average of 1.1C). The relationship is clearest for bell holes with more than about 300g aggregate bat body mass and for bell holes that are moderately wide and deep, of W:D ratio between 0.8 and 1.6. Measurement of temperature decay after abandonment showed that rock temperature returns to normal each day during bat foraging periods. Metabolic activity from a typical population of 400g bat (10 individuals) yields 41g of CO2, 417.6kJ of heat, and 35.6g of H2O in each 18hour roost period, and could produce a water film of ~0.44mm, that is saturated with CO2 at ~5%. The resultant rock dissolution is estimated at ~0.005cm3 CaCO3 per day. The metabolic heat ensures that the focus of dissolution remains vertical regardless of geological controls. A typical bell hole 1m deep may be formed in some 50,000years by this mechanism alone. Addition of other erosional mechanisms, such as direct bacterial bio-erosion, or the formation of exfoliative organo-rock complexes, would accelerate the rate of formation. The hypothesis is developed that bell holes are initiated and formed by bat-mediated condensation corrosion and are governed by geographic distribution of clustering bats and their roosting behaviour.

A spreadsheet program (Scallopex) to calculate paleovelocities from cave wall scallops, 2009, Woodward Emily, Sasowsky Ira D.

The determination of paleovelocities through analysis of scal-lops on cave walls is an important part of paleohydrologic analysis. The linked equations that must be solved to do this are cumbersome, though. This paper presents a spreadsheet program that simplifies the process. The user enters scallop lengths, paleotemperatures, and passage dimensions; and the program returns velocities.

Springs, 2012, White, William B.

Springs are localized points where groundwater returns to surface routes. Karst springs drains integrated conduit and fracture networks and often have very high discharges. Most spring waters have temperatures very close to local seasonal averages but some waters rise from depths and produce thermal springs. Spring discharges tend to respond rapidly to storm recharge. The hydrographs of springs can be analyzed to provide information on the conduit system that feeds the spring. Karst springs are highly vulnerable to contamination from surface sources. Great caution must be exercised before using karst springs as water supplies.

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