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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 active water is water with corrosive properties [16].?

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;
See all featured articles from other geoscience journals

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Your search for dolines (Keyword) returned 235 results for the whole karstbase:
Showing 226 to 235 of 235
Karst and caves of headstreams of the Lena River, 2012, Philippov V. M. , Filippov A. G. , Indyukov A. E.

Karst phenomena of headstreams of the Lena River in Eastern Siberia between junctions of the Zolotokan Creek and Chanchur River are described in the paper. Wide spreading of karst is determined by: areal occurrence of marine carbonate rocks of the Lower and Middle Cambrian, their monoclinal bedding, increased tectonical fracturing of karstiferous rocks, relatively high roughness of surface topography, flattened dividing ranges, relatively humid climate (precipitation 400-500 mm per year), and long history of continental regime of the area. The relics of ancient gently sloped river valleys at dividing ranges are the most karstified. There is no surface drainage in their limits, and groups of dolines up to 40-80 individuals per square kilometer are common. Karst development determines an existence of vast meadows covered with the dwarf birch, reindeer moss and herbs (Trollius asiaticus, Scutellaria baialensis, Rhodiola rosea, Veratrum lobelianum, Gentiana sp., Allium sp. .) among stocked coniferous taiga at the altitude of 1080-1150 m a.s.l. at the watershed divides of the Lena and Levaya Tongoda rivers (Mongolian Steppe Stow), and Lena and Pankucha-2nd rivers. On the rest of the territory, dolines do not form large groups, but they occur as isolated individuals or scattered clusters consisting of 3 to 5 individuals. Karst dry valleys are widely spread. Their total length is not less than 397 km, and 126 km of them belongs to the watershed of the Yukhta-1st River. Residual hills having morphology of pillars, towers and ridges were observed. Descriptions of two karst caves and two crevice caves are given.

Results of speleological explorations of the Kyzyl-Shevar karst plateau (the republic of Uzbekistan), 2012, Skachko, . V.

In July-August, 2011 exploration work was conducted on the territory of the Gissarsky preserve (Kyzyl-Shevar plateau, foot of the Chimbay Mountain) by the research expedition of Chertkovsky “Crystal” speleological club of the Ukrainian speleologicheskoy association, composed of 7 persons. During this expedition more than 90 dolines, collapses and crevices were examined on a plateau, and 40 caves were found as result, ranging from 5 to 204 m in depth. based on these results, the inventory of caves of the Kyzyl-Shevar plateau was compiled.

Classification of closed depressions in carbonate karst, 2013, Kranjc, A.

Closed depressions are the most characteristic features of karst having dolines among them. Some of the terms, such as doline, uvala, and polje, originate from the Dinaric karst, internationally introduced by J. Cvijic´ in 1893. Karst depressions belong to mezo- and macroforms (from decameter to kilometer scale). The basic feature is the doline, which can be further divided due to its genesis into more main types: solution (the real karst doline), collapse, dropout, buried, cap rock, and suffosion doline. The larger depressions, by dimension and form somewhere between a doline and a polje, are the uvala, but genetically they are closer to the doline. Polje (meaning a plain or field in Slavic languages) is the biggest closed epression, its bottom covering several hundreds of square kilometers. Closed depressions, solution dolines and poljes especially, are regarded as indicators of a fully developed karst (holokarst by Cvijic

Denudation and Erosion Rates in Karst, 2013, Gunn, J.

In many lithologies erosion (removal of material) and denudation (lowering of the land surface) are directly related butthis is not the case in karst where the majority of erosion is subsurface and only contributes to denudation over geological time. Dissolution is the dominant agent of both denudation and erosion although mechanical weathering of karst rock by clasts brought in by allogenic streams may contribute to the enlargement of cave passages. Most published ‘denudation’rates are actually corrosion rates and many were based on at most a few years of spot measurements at a spring or at a catchment outlet. Hence, considerable caution is necessary in interpreting the results. Cosmogenic nuclides could provide loner-term denudation estimates but have only rarely been applied to karst. Theoretical equations allow prediction of maximum erosion rates from runoff (water surplus), temperature, and carbon dioxide concentrations but field measurements indicate that erosion rarely operates at the maximal rate. Erosion rates vary spatially, with dolines a clear focus, and vertically, with most dissolution contributing to development of the epikarst rather than direct lowering of the land surface. Human activities, and particularly limestone quarrying, are potent erosive forces and in some areas more limestone was removed by quarrying in the twentieth century than by corrosion over the Holocene. Quarrying is also a direct agent of denudation, locally lowering land surface by tens or hundreds of meters

Solutional Weathering and Karstic Landscapes on Quartz Sandstones and Quartzite, 2013, Wray, R. A. L.

Landscapes on highly quartzose bedrock that exhibit almost identical scale and morphology to those on karstified limestones occur under a range of climates and on most continents. These include ruiniform towers, grikes, stone cities, caves, dolines, smaller surface karren, and silica speleothems.

However, these rocks are much less soluble than most carbonates, and the weathering processes are quite different. However, because chemical solution is demonstratively a critical component in the genesis of these landforms, they may be regarded as karst. This chapter summarizes the processes of karstification in quartz sandstones and then reviews the incidence of these landforms around the world.

MODELLING THE EVOLUTION OF KARST AQUIFERS IN THREE DIMENSIONS/Conceptual models and realistic scenarios Inaugural dissertation/ zur Erlangung des Doktorgrades Dr. rer. nat. am Fachbereich Geowissenschaften im Institut fur Geologische Wissenschaften der Fr, 2013, Hiller, Thomas

This work presents the development of three dimensional karst evolution models for various settings and conditions. As karst aquifers are very sensitive to changes of their hydraulic boundary conditions a comprehensive understanding of the governing processes inside a karst aquifer is indispensable. Especially if a karst aquifer is inuenced by anthropogenic utilization like e.g. the construction of a dam site, the resulting changes inside the aquifer need to be understood as good as possible to prevent any unpredictable incidents. The use of numerical models to simulate the development of a karst aquifer is therefore a suitable tool in the preliminary investigations. It will be shown that simple three dimensional damsite models can be used to evaluate the parameters that control the karst aquifer evolution. Based on these simple models an enhanced three dimensional model of a real damsite is developed. This model is used to simulate the evolution of the aquifer close to this damsite and to expose how the construction of the dam inuenced the nearby bedrock signicantly. It is shown that the karstied zone around the dam site is the reason for the subsidence of an adjacent highway. The presented numerical results can be veried by eld observations. Additionally to the damsite models a three dimensional model approach is presented that describes the formation of large collapse dolines. Collapse dolines are signicant surface features of karst landscapes and their evolution which is usually linked to a subsurface karst system is of high interest in the karst community. To simulate the evolution and interaction of such a doline system, a three dimensional model with several spatially distributed dolines is used. There, based on the concept of a mechanically weakened crushed zone, the evolution over time is presented. The applied collapsing mechanism used in this work also allows to estimate the bedrock removal and surface lowering over time. The determined rates are in good agreement with values reported in literature


Digital elevation models (DEM) are digital representations of topography that are especially suitable for numerical terrain analysis in earth sciences and engineering. One of the main quantitative uses of DEM is the automatic delineation of flow networks and watersheds in hydrology and geomorphology. In these applications (using both low­resolution and precision DEM) depressions hinder the inference of pathways and a lot of work has been done in designing algorithms that remove them so as to generate depression­free digital elevation models with no interruptions to flow. There are, however, geomorphological environments, such as karst terrains, in which depressions are singular elements, on scales ranging from centimetres to kilo­metres, which are of intrinsic interest. The detection of these depressions is of significant interest in geomorphologic map­ping because the development of large depressions is normal in karst terrains: potholes, blind valleys, dolines, uvalas and poljes. The smallest depressions that can be detected depend on the spatial resolution (pixel size) of the DEM. For example, depressions from centimetres to a few metres, such as some types of karren, cannot be detected if the raster digital eleva­tion model has a spatial resolution greater than, say, 5 m (i.e., square 5m pixel). In this work we describe a method for the au­tomatic detection and delineation of terrain depressions. First, we apply a very efficient algorithm to remove pits from the DEM. The terrain depressions are then obtained by subtract­ing the depression­free DEM from the original DEM. The final product is a digital map of depressions that facilitates the cal culation of morphometric features such as the geometry of the depressions, the mean depth of the depressions, the density of depressions across the study area and the relationship between depressions and other variables such as altitude. The method is illustrated by applying it to data from the Sierra de las Nieves karst massif in the province of Málaga in Southern Spain. This is a carbonate aquifer that is drained by three main springs and in which the depressions play an important role in the recharge of the aquifer. A doline density map, produced from a map of 324 detected dolines/uvalas, identifies three main recharge areas of the three springs. Other morphometric results related to the size and direction of the dolines are also presented. Finally the dolines can be incorporated into a geomorphology map.

Physical Structure of the Epikarst, 2013, Jones, William K.

Epikarst is a weathered zone of enhanced porosity on or near the surface or at the soil/bedrock contact of many karst landscapes. The epikarst is essentially the upper boundary of a karst system but is also a reaction chamber where many organics accumulate and react with the percolating water. The epikarst stores and directs percolating recharge waters to the underlying karst aquifers. Epikarst permeability decreases with depth below the surface. The epikarst may function as a perched aquifer with a saturated zone that transmits water laterally for some distance until it drains slowly through fractures or rapidly at shaft drains or dolines. Stress-release and physical weathering as well as chemical dissolution play a role in epikarst development. Epikarst may be found on freshly exposed carbonates although epikarst that develops below a soil cover should form at a faster rate due to increased carbon dioxide produced by vegetation. The accumulation of soil within the fractures may create plugs that retard the downward movement of percolating water and creates a reservoir rich in organic material. The thickness of the epikarst zone typically ranges from a few meters to 15 meters, but vertical weathering of joints may be much deeper and lead to a “stone forest” type of landscape. Some dolines are hydrologically connected directly to the epikarst while other dolines may drain more directly to the deeper conduit aquifer and represent a “hole” in the epikarst. water stored in the epikarst may be lost to evapotranspiration, move rapidly down vertical shafts or larger joints, or drain out slowly through the soil infillings and small fractures. Much of the water pushed from the epikarst during storms is older water from storage that is displaced by the new event water.

A multi-method approach for speleogenetic research on alpine karst caves. Torca La Texa shaft, Picos de Europa (Spain), 2014,

Speleogenetic research on alpine caves has advanced significantly during the last decades. These investigations require techniques from different geoscience disciplines that must be adapted to the methodological constraints of working in deep caves. The Picos de Europa mountains are one of the most important alpine karsts, including 14% of the World’s Deepest Caves (caves with more than 1 km depth). A speleogenetic research is currently being developed in selected caves in these mountains; one of them, named Torca La Texa shaft, is the main goal of this article. For this purpose, we have proposed both an optimized multi-method approach for speleogenetic research in alpine caves, and a speleogenetic model of the Torca La Texa shaft. The methodology includes: cave surveying, dye-tracing, cave geometry analyses, cave geomorphological mapping, Uranium series dating (234U/230Th) and geomorphological, structural and stratigraphical studies of the cave surroundings. The SpeleoDisc method was employed to establish the structural control of the cavity. Torca La Texa (2,653 m length, 215 m depth) is an alpine cave formed by two cave levels, vadose canyons and shafts, soutirage conduits, and gravity-modified passages. The cave was formed prior to the Middle Pleistocene and its development was controlled by the drop of the base level, producing the development of the two cave levels. Coevally to the cave levels formation, soutirage conduits originated connecting phreatic and epiphreatic conduits and vadose canyons and shafts were formed. Most of the shafts were created before the local glacial maximum, (43-45 ka) and only two cave passages are related to dolines developed in recent times. The cave development is strongly related to the structure, locating the cave in the core of a gentle fold with the conduits’ geometry and orientation controlled by the bedding and five families of joints.

Clay cortex in epikarst forms as an indicator of age and morphogenesis—case studies from Lublin–Volhynia chalkland (East Poland,West Ukraine), 2014,

Clay cortex from the contact zone between the host rock (chalk) and infilling deposits were examined in

paleokarst forms (pockets, pipes, and dolines of different age) from the Lublin–Volhynia chalk karst region. In light of the sedimentological and micromorphological analyses, it seems possible to work out a model as the basis for genetic and stratigraphic discussions. (1) Dolineswith the Paleogene orNeogene mineral infills are characterized by (a) homogeneous, residual type of massive clay gradually passing into the chalkmonolith, and at the sametime(b) relatively thickweathered zone. (2) Pipeswith glacigenic mineral infill fromthe Saalian Glacial are characterized by (a) sharp contact between host rock and clay, (b) narrow weathering zone of chalk, (c) diffuse nature of the contact zone between residual clay and mineral infill, and (d) contamination of clay by clastic material. (3) Pocketswith glacigenic mineral infill and traces of theWeichselian periglacial transformation are characterized by (a) strong contamination of chalk by quartz grains, (b) diffuse transition between clay and infill: fromclayey matrixwith single quartz grains (at the contactwith chalk) to clayey coatings and intergranular bridges (in the infill), (c) intensive weathering (cracking) of mineral grains in the infill.

Results 226 to 235 of 235
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