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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. ...

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. ...

Speleology in Kazakhstan

Shakalov on 11 Jul, 2012
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 nivo-karst is a karst-like topography produced by the differential chemical weathering beneath snowbanks from snowmelt containing carbonic acid. it is found mostly in periglacial areas [1].?

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.
Engineering challenges in Karst, Stevanović, Zoran; Milanović, Petar
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Featured articles from other Geoscience Journals
Geochemical and mineralogical fingerprints to distinguish the exploited ferruginous mineralisations of Grotta della Monaca (Calabria, Italy), Dimuccio, L.A.; Rodrigues, N.; Larocca, F.; Pratas, J.; Amado, A.M.; Batista de Carvalho, L.A.
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
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Your search for subsidence (Keyword) returned 186 results for the whole karstbase:
Showing 1 to 15 of 186
Subsidence problems in route design and construction, 1972, Malkin Alexander Bernard, Wood John Charles,
The paper reviews the main causes of ground subsidence as it affects route design and construction in the United Kingdom. Investigation techniques and remedial measures are discussed in relation to both natural and mining subsidence. In addition to the common occurrence of subsidence problems in the coalfields, emphasis is placed on their presence elsewhere in the country. Natural subsidence problems are associated mainly with carbonate and saliferous rocks but mining activity has taken place at various times at numerous geological horizons for a variety of minerals. Future mining activity is likely to involve fewer minerals but will still be dominated by the coal industry. Experience has shown that the conflicting interests of route planners and mineral operators can usually be resolved by negotiation, accompanied in some cases by compensation

Ecological and Faunistic Data on the Stenasellidae (Crustacea Isopoda Asellota of Subterranean Waters)., 1974, Magniez Guy
Some important morphological features, which are discussed here, point out that the Stenasellids (Crustacea Isopoda Asellota) must be considered as a true family (Stenasellidae), independent from the Asellidae. A definition and a renewed diagnosis of the Stenasellidae Dudich, 1924, are given. Their relationships must be pursued, especially in the marine Parastenetroidea and in the psammic Microcerberidae. Until 1938, the group was known only from subterranean waters of southern Europe. Now, several genera and many thermophile species from north-tropical underground waters have been discovered in Africa (5 gen., 12 sp.), Asia (1 gen., 2 sp.) and Central America (1 gen., 4 sp.). The Stenasellids are very active burrowers. Such a behaviour explains how their phyletic lines had colonized the continental underground waters, by migrations from the littoral gravels to the underflow of rivers, phreatic alluvial waters and fnally, to the karstic waters. The typical medium for the life of the group is represented by the phreatic zones of African shields arenas. In European phyletic lines, the speciation seems to be linked with tertiary subsidences (within the Tyrrhenian area, for the line of Stenasellus virei). The European species which have survived quaternary glaciations may have diversified themselves (rising of subspecies), recolonizing newly vacant biotopes in postglacial ages.

Geomorphology of the North Karst, South Nahanni River Region, Northwest Territories, Canada, PhD Thesis, 1976, Brook, George Albert,

First investigated on the ground in June 1972, the Nahanni karst of northern Canada is the most complex karst terrain yet reported from high latitudes. It is centered at 61°28' N, longitude 124°05' W and lies within the zone of discontinuous permafrost. Mean annual temperature is 24°F and mean total precipitation 22.3 inches. Principal karst forms are fracture-located karst streets and irregularly-shaped closed depression called karst platea which may be up to 600 feet in depth. Platea often contain karst towers which are residuals of wall recession. Vertical-walled pond dolines up to 120 feet deep are common in bare karst areas while subjacent karst collapse, subsidence and suffosion depressions occur on marginal shale- and drift-mantled surfaces. Three small poljes have been identified, two produced entirely by solution, the other a structural form. These are periodically inundated. There are several peripheral fluvial canyons up to 3,000 feet deep that are blocked by glacial drift and which presently drain underground. Similarity in the hydrogeological properties of Nahanni Formation limestones at a variety of scales has led to the development of morphologically-identical karst forms which range in size from inches up to hundreds of feet. Furthermore, many of these landforms are part of a developmental sequence that at one scale links vertical-walled dolines, karst streets, platea and poljes; and at another links solution pits, grikes and joint hollows on limestone pavements. The evidence suggests that poljes form by the coalescence of dolines and uvalas just as Cvijic suggested in 1918. In attempting to explain the almost "tropical" nature of the sub-arctic Nahanni karst landform assemblage, a number of facts are of importance.
(a) The Nahanni Formation limestones have been highly warped and intensively fractures during the past one million years. Open fractures have encouraged karstification by allowing easy movement of water underground. Warping has provided the relief necessary for the development of solutional forms with a distinct vertical component.
(b) The karst can not be considered relict because it was glaciated during the Pleistocene. In addition the hydrological activity in it today is comparable with that in many humid tropical karst areas.
(c) Solutional denudation rates governed by aspects of surficial and bedrock geology may in some localized areas be equivalent to rates in humid tropical carbonate regions.
(d) At present rates, the most highly developed forms could have been produced within the last 200,000 years and because there is evidence to indicate that the karst may not have been glaciated for up to 250,000 years, such a period has been available for solutional development.
Because the Nahanni region has not been glaciated for an extremely long period, it may be one of only a few high-latitude carbonate terrains that have had time to develop fully. Its very existence questions the validity of the concept that the intensity and direction of karst development is climate-controlled. In the Nahanni at least, the structural and lithological properties of the host limestone appear to have been of greater importance. The labyrinth karst type present in regions of humid-tropical to sub-arctic climate, is an outstanding example of a structurally-controlled karst landscape. It may well be that the same controls also influence the distributions of other karst types.

The Geothermal nature of the Floridan Plateau, 1977, Smith Douglass L. , Griffin George M.

Hydrogeology related to geothermal conditions of the Floridan Plateau -- Geologic and geomorphic setting -- The principal artesian zone -- The Boulder zone -- Injection sites in Florida -- The Geothermal regime of the Floridan Plateau -- Vertical temperature profiles in Floridan Aquifer system, geographic distribution of temperature in Floridan Aquifer system -- Surface evidence of thermal upwelling -- Humble-Lowndes-Treadwell No. 1 -- Warm mineral springs sinkhole -- The Mud hole submarine spring -- Comparison of theoretical and field studies -- The Dolomite question and cavity formation, Geothermal gradients below the Floridan Aquifer system -- Heat flow in Florida oil test holes and indications of oceanic crust beneath the Southern Florida-Bahamas Platform -- Spatial distribution of ground water temperature in South Florida -- Regional significance of Florida heat flow values -- Thermal model for the Florida crust -- A Model of subsidence with inhomogeneous heat production.

Sea-Level Lowering During the Illinoian Glaciation: Evidence from a Bahama 'Blue Hole', 1979, Gascoyne M, Benjamin Gj, Schwarcz Hp, Ford Dc,
Stalagmites have been recovered from 45 meters below sea level in an underwater karstic cave ('blue hole') near Andros Island in the Bahamas. Uranium series ages, corrected for contamination of the sample by young marine carbonate replacements, show that the speleothem was deposited between 160,000 and 139,000 years before the present. This period corresponds to the Illinoian glacial event and demonstrates that sea level must have been lowered by at least 42 meters (allowing for subsidence) from its present position during this time

Towards the prediction of subsidence risk upon the Chalk outcrop, 1983, Edmonds Cn,
Surface karst landforms such as solution pipes, swallow holes and dolines are well developed on the Cretaceous chalk outcrop in Britain. The local frequency of these solution features on the chalk can be as high as on any of the best developed karst areas on other British limestones. However, the overall frequency of solution features for major regions of the chalk outcrop is much lower. Solution pipes, swallow holes and dolines often represent an engineering hazard because of metastable conditions, which, if disturbed, can result in ground subsidence. The research described here is aimed at producing a model to predict areas of subsidence risk upon the chalk outcrop. Considerations for the prediction of subsidence risk are outlined with preliminary analysis for two areas

Quelques aspects du karst en Chine, 1985, Tricart, J.
Some characteristic features of karst in China Karst terrain is widespread in China: some 2,000,000km2, corresponding to 20-25% of the whole surface of the country. It occurs at very different altitudes and under quite different climates, from the region of Zhoukoudian, where has been found the skull of the Pekin Man, to the Tibet Plateau, where there is presently permafrost conditions, and up to southern tropical moist China, near Canton and Guilin. Recent chinese investigations have proved that most karst features are old. In Southern China a tropical karst (tower-karst or "mogotes" karst) is associated with lacustrine deposits containing the well-known Hipparion Fauna, of Miocene age. Its predates the intensive uplift of the Himalaya and of the Tibet, which has begun during the Pliocene and has continued during all the Pleistocene. The same fossils have been found in this tropical karst in present permafrost areas, above 5,000m. In the region of Guilin (Guangxi Province), this tropical karst has been described. There is evidence for the former existence of a covered karst, where limestones and dolomitic limestones were covered by a thick layer of reddish residual clays, with limonite. This mantle has been stripped during different periods of drier and probably cooler climate, has suggested by pollen spectra. In some places, these residual products have been trapped into pits, cracks, and caves. We have observed a small quantity of red clay painting limestone stalactites and sinters (Chuanshan and Leng Yin Yen Caves, in the surroundings of Guilin). They present sometimes a mining interest and some extractive industries are presently active (limonite, cassierite, etc.). Many caves have been surveyed by the Institute of Karst geology, in Guilin. Some have been equiped for tourism, around Guilin. All these caves are old. Some radiocarbon dating of speleothems yield ages of 33,000 year BP. The famous carving of the Leng Yen Cave have not been affected by calcite deposition from dripping since at least 500 years. The large caves that have been surveyed should correspond to a long evolution span. Along the Lijiang River, at least two terraces can be observed. They are built with gravels and pebbles, covered with thinner sand and loam, suggesting climatic changes, also attested by the changes of fauna and vegetation. These past cooler periods are characterised by an opened vegetation, with the striping of the old weathering cover of the former tropical karst. These karst terrains have been investigated in China for management purposes. Groundwater oscillations have frequently resulted in land subsidences damaging buildings, and in dramatic collapses destroying fields, roads. Sometimes, underground collapse plugged caves and dammed underground rivers, resulting in floodings. The caves are frequently used as reservoirs for irrigation and power plants.

Subsidence and foundering of strata caused by the dissolution of Permian gypsum in the Ripon and Bedale areas, North Yorkshire, 1986, Cooper Ah,
Underground dissolution of thick gypsum beds in the Edlington Formation and Roxby Formation of the Zechstein sequence in North Yorkshire, England, has resulted in a 3 km-wide and 100 km-long belt of ground susceptible to foundering. Within this belt a large subsidence depression at Snape Mires, near Bedale, was largely filled with lacustrine deposits in the later part of the Late Devensian and during the Flandrian. South of Snape Mires the Nosterfield-Ripon-Bishop Monkton area has suffered about 40 episodes of subsidence in the past 150 years, and the presence of several hundred other subsidence hollows indicates considerable activity from the later part of the Devensian onwards. The linear and grid-like arrangement of these subsidence hollows indicates collapse at intersections in a joint-controlled cave system. Linear subsidence features at Snape Mires are also joint-controlled. The transition from anhydrite at depth to secondary gypsum near surface marks the down-dip limit of the subsidence-prone belt. Cavities are propagated upwards by roof collapse of caverns in the gypsum, leading to the formation of breccia pipes. Choking of the pipes can reduce the surface expression of the underground collapse, but the larger cavities are liable to produce pipes that reach the surface even at the eastern boundary of the 3 km-wide belt described. Further subsidence in the Ripon area is predicted and some suggestions for remedial measures are given

Subsidences and erosion in loess soils, 1987, Savvateev S. S. , Kriger N. I. , Lavrusevich S. A. , Petrov A. G. ,

Subsidence hazard prediction for limestone terrains, as applied to the English Cretaceous Chalk, 1987, Edmonds Cn, Green Cp, Higginbottom Ie,
Soluble carbonate rocks often pose a subsidence hazard to engineering and building works, due to the presence of either metastable natural solution features or artificial cavities. There is also an inherent danger to the public and lives have been lost because of unexpected ground collapses. Although site investigation techniques are becoming increasingly elaborate, the detection of hazardous ground conditions associated with limestones is frequently difficult and unreliable. Remedial measures to solve subsidence problems following foundation failure are expensive. It would be advantageous if areas liable to subsidence could be identified in a cost-effective manner in advance of planning and ground investigation. Hazard mapping could then be used by planners when checking the geotechnical suitability of a proposed development or by engineering geologists/geotechnical engineers to design the type of ground investigation best suited to the nature and scale of the potential hazard. Recent research focussed on the English Chalk outcrop has led to the development of two new models to predict the subsidence hazard for both natural solution features and artificial cavities. The predictive models can be used to map the hazard at any given chalkland locality, as a cost-effective precursor to ground investigation. The models, although created for the Chalk outcrop, have important implications for all types of limestone terrain. The basis of the predictive modelling procedure is an analysis of the spatial distribution of nearly 1600 natural solution features, and more than 850 artificial cavity locations, identified from a wide varietyy of sources, including a special appeal organized by CIRIA. A range of geological, hydrogeological and geomorphological factors are evaluated to identify significant relationships with subsidence. These factors are ranked, numerically weighted and incorporated into two quantitative subsidence hazard model formulae. The models can be applied to perform hazard mapping

The application of airborne remote sensing to the detection of solution features in limestone, 1987, Edmonds Cn, Kennie Tjm, Rosenbaum Ms,
Airborne remote sensing techniques have been developed for the detection of collapse and subsidence features in chalk and other limestone rocks. The detection of such features in the early stages of an engineering project is of crucial importance if serious geotechnical problems to building construction and public safety are to be avoided. Particular attention is paid to the potential of airborne multispectral scanner (MSS) and thermal infrared (IR) data as a means of detection. Background information is also provided concerning a project to obtain multitemporal thermal IR data over two test sites on the Cretaceous Chalk outcrop of southern England

Subsidence associated with the abstraction of fluids, 1988, Bell Fg,
Subsidence of the ground surface due to the withdrawal of groundwater, oil, gas or brine from sedimentary deposits has ccurred in many parts of the world. The abstraction of groundwater has been the principal cause of subsidence, primarily because more groundwater is abstracted than all the other liquids put together. Subsidences of several metres have been recorded, for example, in California due to the exploitation of oil, as well as groundwater. Such ground movements represent a notable problem in engineering geology. Generally these subsidences take place slowly but the occurrence at the surface of sinkholes as a result of water tables being lowered in limestone terrains is a rapid process. In the case of groundwater, gas or oil abstraction the reduction in pore pressure in the voids due to the decline in head leads to an increase in effective load on the sediments concerned, bringing about consolidation, which is reflected at the surface as subsidence. On the other hand when mineral deposits are worked by solution mining the rock material itself is removed which, if uncontrolled, resultsin subsidence. The removal of fluids from sediments frequently has resulted in the formation of fissures at the surface. Indeed there are cases on record where faults are alleged to have been formed. Such fissures often occur around the periphery of the subsidence trough

Land subsidence in the AI-Dahr residential area in Kuwait: a case history study, 1990, Airifaiy Ia,
Four cylindrical sinkholes occurred between April 1988 and June 1989 in a residential area located 27 km south of Kuwait City. The physiographic and geological conditions of their development and the methods of survey followed to detect potential subsurface cavities in the area are discussed. The major sinkhole is 15 m in diameter and 31 m deep; the others are a few metres in size. A mechanism of migrating sinkholes is suggested, where the upper elastic sediments have been moved down into cavities of the underlying Dammam Limestone. Such movement could have been triggered by garden irrigation and urbanization. A conceptual model is introduced to explain the mechanism of this subsidence. Microgravity techniques were applied using a La Coste Model-D gravimeter to detect areas of subsurface weakness. Negative anomalies in the order of 80 microgals were recorded and considered to indicate underground cavities or zones of contrasted mass-deficiencies representing high risk areas. Moderate anomalies were also recorded and attributed to poor compaction of the ground prior to construction

Prsentation des rgions karstiques du Vietnam, 1991, Khang, Pham
Tropical karst of Vietnam - The main karstic region of Vietnam cover a total surface of 50,000 km2 and are to be found almost exclusively in North Vietnam, that is to say in 1/5 of the territory. They are situated in the distinct zone conditioned by the Tertiary and Quaternary phases. The largest zones are situated in the Northern and Eastern parts of the country. The least karstified zone is the West and southwest of Hanoi. The flooded coastal region (Isle of Catba, Along Bay) belongs to the boarder of the subsidence zone of the Red River delta. Although the damp tropical monsoon climate has varied very little from the Neogene until today, the karstic landscapes and degrees of evolution differ in each area and can range from cone, pyramid, tower to pinnacle karsts.

Upper Ordovician Arthur Marble and Oligocene Takaka Limestone contain extensive phreatic cave systems beneath the Takaka valley and Golden Bay. Half of all water flows in the Takaka valley pass through subterranean drainage conduits in carbonate rock. New Zealand's largest freshwater springs, the Waikoropupu Springs, are one surface expression of these karst systems. Other characteristics are dolines and submarine springs. A paleocave system developed in the Arthur Marble during the formation of the northwest Nelson peneplain in the Late Cretaceous and early Tertiary. Subsequent subsidence of the peneplain, and deposition of Motupipi Coal Measures, Takaka Limestone, and Tarakohe Mudstone, was followed by folding and faulting of the sequence in the Kaikoura Orogeny. Uplift and erosion in the Pleistocene brought the two carbonate rock formations within reach of groundwater movements. The paleocave system in Arthur Marble was reactivated during periods of glacial, low sea levels, and a smaller cave system formed in the overlying Takaka Limestone. Both systems interact and extend to more than 100 m below present sea level, forming the Arthur Marble - Takaka Limestone aquifer

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