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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. ...

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That radioisotope is an unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation [22].?

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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 zagros (Keyword) returned 31 results for the whole karstbase:
Showing 1 to 15 of 31
The Zagros Mountains, Iran: A Preliminary Report, 1971, Judson D. M.

Hydrogeological conditions in the Middle East, 1982, Burdon Dj,
The geology of Middle East is summarized under the subheadings: Precambrian basement, epicontinental sediments, geosynclinal and shelf deposits, Tertiary volcanics and Quaternary cover. The main tectonic episodes including epeirogenic movements, rifting and the Tertiary orogeny, are reviewed. The imposition of hydrometeorolocal and climatic conditions upon the regional geology provides the setting for the hydrogeological discussion. Five factors which influence infiltration to aquifers under conditions of low precipitation and high potential evaportranspiration are discussed. The predominance of fossil groundwater is the most striking hydrogeological phenomenon occurring on a regional scale in the Middle East. Its mode of formation during the pluvials is outlined and the isotopic evidence is reviewed. The main physical and chemical characteristics of fossil ground-waters are described. It is conservatively estimated that some 65 000 km3 of good- to medium-quality groundwater are stored in the great artesian basins of the Near East. These fossil ground-waters are a non-renewable natural resource. Current annual abstraction is, as yet, a small percentage of the total reserves but economic factors rather than the volume of reserves will determine the ultimate extent of their exploitation. The renewable groundwater resources of the Middle East tend, by comparison, to be of local rather than regional significance. Some originate outside the Middle East, coming in as surface flows in the Nile and Tigris-Euphrates and infiltrating into the sediments in and adjacent to the flood plains. Other renewable resources accumulate within the region where high precipitation and mountainous relief are associated. Such areas include the Djebel Akhdar of Cyrenacia, the Tertiary fold mountains from the Taurus through the Zagros to the Oman ranges, and the volcanic and basement highlands of Yemen, Asir and Ethiopa. Locally, in areas of lower precipitation, lenses of recent fresh groundwater float on regional more saline groundwater. In some areas subsurface flows towards and through wadi systems are also of importance

Les montagnes refuges calcaires de Mditerrane orientale et du Moyen-Orient (Grce, Crte, Turquie, Iran), 1990, Maire, R.
The mountain shelters in the karst regions of Greece, Crete, Turkey and Iran - The concept of mountain shelters in karst region exists from the Prehistory, especially with rock-shelters and karstic caves. In the high karsts of Greece, Crete, Taurus (Turkey) and Zagros (Iran), the highlanders have survived during the invasions and wars because of their natural bastions. At the junction of civilisations and religions (Christians and Moslems), the karst biotope, one of the natural environment the most used by human people to guard against enemy and to breed (sheep-farming). Because of grazing and destruction of forests (particularly by Byzantine people and Venitians), the mediterranean karst mountain grew poorer.

Les nomades lours du massif calcaire du Kuh-e-Garrin (Zagros central, Iran), 1997, Dumas, Dominique
Today many nomadic confederations live in the Zagros range. For a long time, these high mountains have offered these populations both shelter and a large territory which is not as arid as the piedmont plains due to orographic rainfall Whereas the Baxtyari and Qashqa are well described in the literature, little is known about the Lours nomads. In this paper, observations and investigations on nomadic families (Summers 1994, 1995, 1996) are presented together with the characteristics of their seasonal migrations. The socio-economic dimension of these populations is also studied to explain the reasons which account for the overgrazing clearly visible in all Zagros mountains. Today, these high mountain karsts are subject to a higher anthropogenic pressure than previously, which entails an irreversible disappearance of vegetation and soils.

Karst terraines in Iran - Examples from Lorestan, 1999, Ahmadipour, Mohammad Reza

In Iran karst terrain covers about 13% of the total area. The carbonate rocks belong to the Eocene, Oligocene-Miocene, Miocene, Jurassic and Cretaceous. Most of the carbonate rocks are developed in the basins of Mazindaran and Zagros. The carbonate rocks in the Zone of Zagros, due to the prevailing tectonic activities, have undergone more processes of karstification. About 56 % of all the springs originated from this zone. In Lorestan the Zagros zone consists of a series of parallel anticlines in which, due to the tectonic movements, the rocks have undergone folding and fracturing. The folding and fracturing have created rich ground water reservoirs. The carbonate rocks of Lorestan show all types of karst features such as karren, dolines and caves. The most developed karstic features are seen in the Bangeston group. Most of the springs are discharged either along the lineaments or at the intersection of the lineaments. The chemical analyses of the samples show that they are of bicarbonate type. The drinking water of the city of Khorramabad (capital of Lorestan) is supplied from the karstic springs. In this paper, the karst hydrology of two important regions of Lorestan are considered.

Karst and caves in salt diapirs, SE Zagros Mts. (Iran), 1999, Bosá, K Pavel, Bruthans Jirí, , Filippi Michal, Svoboda Tomá, š, , Š, Mí, D Jakub

About 200 salt diapirs (plugs) have been known in the region of the Persian Gulf. numerous are still active. Karst rocks are represented by a rock salt, less frequently by gypsum and anhydrite. Karst developed especially in relics of planated surfaces. Karst forms are completely comparable with karsts in classical carbonate rocks. Different forms can be distinguished: karren, solution pipes, solution dolines, solution-collapse dolines, uvala-like to polje-like depressions, blind valleys, canyon-like forms, ponors, springs and caves. Two World longest caves in salt were discovered and explored here. Long caves are developed especially in a watertable, large ones in plugs near the seacoast. Caves are often outlets of closed depressions (polje-like). Some caves at bottoms of collapse-solution dolines or swallow holes are subvertical. Karst processes are caused dominantly by dissolution of salt, less frequently of gypsum. The process of subrosion of halite under gypcretes plays the main role. Deep circulation of meteoric waters was proved in some plugs.

Thickness of cap rock and other important factors affecting the morphogenesis of salt karst, 2000, Bruthans Jirí, , Š, Mí, D Jakub, Filippi Michal, Zeman Ondrej

Four classes of different thickness of cap rock can be distinguished, each with its special superficial and underground karst forms: 1. salt outcrops, 2. thin cap rock (0,5-2 m), 3. cap rock of moderate thickness (5-30 m), 4. cap rock of great thickness (more than 30 m). The most important factors affected by cap rock thickness are as follows: the density of recharge points, the amounts of concentrated recharge which occur at each recharge point, the rate of lowering the ground surface of salt karst, the dissolution capacity of water and the size and amount of load transported by underground flood-streams into cave systems. The thickness of cap rock above the cave does not influence the cave itself; more important seems to be the thickness of cap rock in the recharge area of the cave and the type of recharge into the salt environment. Another important factor is the thickness of overburden above the cave, which negatively correlates with intensity of breakdown. Wide passages in some caves are developed as result of intensive deposition of bedload, which expel the stream into the side of the passage and are due to enhanced corrosion in the few decimetres high zone above the bottom of passage.

The Effect of Darab Salt Dome on the Quality of Adjacent Karstic and Alluvium Aquifers (South of Iran), 2002, Sharafi A. , Raeisi E. , Farhoodi G.

Karstified carbonate formations are among the most important water resources in the south-central regions of Iran. If the karst water is not contaminated by salt domes, the electrical conductivity of water in the karst aquifer is less than 500 µS cm-1 in the south-center of Iran. The study area is located in the southern flank of Shahneshin-Milk anticline, 200 km east of Shiraz. This region is situated in the Zagros Thrust Zone. The Tarbur karstic formation (Late Campanian-Maastrichtian) is outcropped on the southern flank of the Shahneshin-Milk anticline which is underlain by the impermeable Radiolarite formation. The Darab salt dome outcrops inside the karstified Tarbur Formation. Several springs emerge from the Tarbur Formation. The quality of all springs is in the range of unpolluted karst water except for three springs which are located near the Darab salt dome. The electrical conductivity of these springs range from 1200 to 2000 µS cm-1. Part of the alluvium near the Darab salt dome is salt-marsh which is bounded by two channels. The electrical conductivity in the salt-marsh below the water table is about 1400 µS cm-1, and it reduces to 400 µS cm-1 at the lower depths. Run-off from the Darab salt dome and seepage from the channel with low quality water are probably the main reasons of salt-marsh development. A considerable amount of polluted Tarbur karst water does not flow towards the marshland because, firstly, most of the Tarbur karst water discharges from the springs, and secondly, the alluvium aquifer is not affected by polluted water at lower depths.

Hydrodynamic behaviour of the Gilan karst spring, west of the Zagros, Iran, 2003, Karimi H. , Raeisi E. , Zare M.

Gypsum karst of Zagros Mountains (I.R. Iran), 2003, Cucchi Franco, Zini Luca

Evaporite morphologies have attracted our attention during geological surveys on the Karkheh River, a water course that intersect the chain of the Mountains Zagros in the western Iran. We recognised three types of karst in the evaporitic Gachsaran Formation as a function of the localisation along the syncline axis or along a fold side. There are sinkholes and suffosion dolines or caves and collapse dolines along the syncline axis, gently dipping galleries at the contact between limestone and gypsum following maximum dip.

Geophysical characteristics of epikarst: case studies from Zagros Mts. (Iran) and the Koneprusy region (Czech Republic), 2003, Bosá, K Pavel, Beneš, Vojtech

Characteristics of epikarst zone were studied by geophysical methods, especially refraction seismics, combined with electrical resistivity and gravimetry measurements. Applied methods were equal in both regions, so comparable results were obtained. The interpreted seismic boundaries follow the basal plane of epikarst (s.l.) and limit the epikarst zone from the geophysical point of view, i.e. zone with comparably low seismic velocities (mostly 1,000 to 3,000 m.s-1). The thickness of epikarst in the Czech Karst - the Koneprusy Devonian - is from 5 to about 60 m. The epikarst in Zagros Mts. reached up to 180 m (Cretaceous lmst.). The differences of character and vertical extent of epikarst zone depend on entirely different geological structure and geomorphological setting (relief) and evolution of both sites, which established different conditions for the release of residual stress in the limestone massifs.

La grotte dAlisadr, un tmoin exceptionnel de lvolution morphologique du Zagros (Iran), 2004, Dumas, Dominique
Cave of Alisadr: a geomorphologic site of outstanding interest in the Zagros Mountains of Iran - The tourist cave of Alisadr, located on the eastern boundaries of the Zagros Mountains, is biggest subsurface cave visited in Iran. Most part of the karstic underground galleries is permanently filled with water: on the sides of the galleries former water table levels are indicated by numerous calcareous sinters. The sub-surface karst has preserved numerous relics and paleoenvironmental residual deposits, which show the geomorphologic karstic development. Dating of the three conspicuous calcareous levels in the cave and that of the surface basaltic mesa, to be established a few kilometres from the cave enable a chronology the stages of karstic evolution. The place of pre-quaternary vestiges in the landscapes of this country is also determined. For example, no typical landform of glacial erosion has been identified. The current karstic denudation rate is about 3 mm/Ky. The geomorphologic evolution of surface and sub-surface landforms during the quaternary era is shown and deduced from the processes, which have led to breccia formations in calcareous rocks.

Geological, structural and geochemical aspects of the main aquifer systems in Kuwait, 2004, Alsulaimi Js, Alruwaih Fm,
The paper summarizes the lithology, structure and the geometry of the main aquifer systems in Kuwait (the Dammam Formation and the Kuwait Group) along with the hydrochemical characteristics of the aquifers. Kuwait lies between the Arabian Shield and Zagros fold belt at the periphery of the Arabian platform. Structures associated with the Kuwait Arch noticeably control the subsurface configuration of the Dammam Formations and, hence regulate the distribution of the overlying Kuwait Group sediments. For the broad setting, the paleogeography of the Eocene has been constructed. The main lithologies of concern, both in the surface and subsurface, are the recent and subrecent sediments. The Kuwait Group includes the Dibdibba Formation, and the undifferentiated Ghar and Fars Formations, as well as the Hasa Group comprising the Dammam, Rus and Umm Er-Radhuma Formations. Subsurface geological cross-sections were constructed for the Dammam Formation, showing its structures, configuration, unconformity, and zones of uplift. Potential sites of karst formation in the Dammam limestone have been identified in the cross-sections. The structural study enables the reconstruction of the paleomorphostructural sections of the Dammam Formation. The chemical investigation indicates that the Kuwait Group aquifer is occupied by Na2SO4 and NaCl water types. In addition, the Kuwait Group aquifer is supersaturated with respect to calcite and is undersaturated with respect to halite, gypsum, anhydrite and dolomite. The Dammam Formation aquifer has Na2SO4, CaSO4 and NaCl water types. Moreover, the Dammam Formation is supersaturated with calcite and dolomite and is undersaturated with respect to halite, gypsum, and anhydrite. The calculated mean values of the PCO2 of the Kuwait Group and the Dammam Formation aquifers are 3.8 x 10(-3) atm. and 2.99 x 10(-3) atm. respectively, which are significantly above the PCO2 of the Earth's atmosphere. This may suggest a deep closed environment

Characterising the main karst aquifers of the Alvand basin, northwest of Zagros, Iran, by a hydrogeochemical approach, 2005, Haji Karimi, Ezatollah Raeisi, Michel Bakalowicz,

Tertiary-Quaternary faulting and uplift in the northern Oman Hajar Mountains, 2005, Kusky Timothy, Robinson Cordula, Elbaz Farouk,
Field mapping and remote sensing investigations reveal two new major fault sets cutting through Tertiary rocks, Quaternary terraces and a several-hundred-year-old irrigation canal system in the Hajar Mountains of northern Oman. They extend for tens of kilometres, forming fracture intensification zones several hundred metres wide. WNW- to NW-oriented faults run parallel to the mountain fronts in the plains adjoining the central Hajar range then obliquely crosscut the mountains in the north. Motion along these faults explains how Quaternary marine terraces became elevated 190 m above sea level. A second fault set strikes north to NNE. The associated juvenile topography suggests that they also accommodate recent uplift, subsidiary to the WNW-striking faults, with minor strike-slip and differential movement between various segments of the Hajar Mountains. Both fault systems, and the amount of Quaternary uplift (between 100 and 500 m), are similar to those in other active and ancient forebulge environments. Using the fracture patterns observed, it is proposed here that the Hajar range lies on the active forebulge of a collision zone between the NE margins of the Arabian plate, the Zagros fold belt and the Makran accretionary prism, which resulted in the recent uplift

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