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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. ...
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,
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. ...
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 calcite is 1. the commoner, more stable, mineral form of calcium carbonate, caco3. it is the dominant component of all limestones and, due to its dissolution and reprecipitation by natural waters at normal temperatures, it is also the dominant mineral of chemical cave deposits including stalactites and stalagmites. it is white or colorless when pure but may be stained, most commonly to yellows and browns, by included impurities such as iron oxides. its uninterrupted growth in a pool may allow development of good crystals, shaped as elongate scalenohedral pyramids of trigonal habit. growth in stalactites and stalagmites is either in masses of fine parallel or radiating needles, or in a mosaic of larger rhombic crystals, easily identified by their well developed cleavage surfaces. calcite is also the dominant vein mineral in limestones [9]. 2. a mineral composed of calcium carbonate (caco3) like aragonite but differing in crystal form; the principal constituent of limestone and other speleothems [10].?
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Featured articles from Cave & Karst Science Journals
Arranged by geologist Dr. Temucin Aygen, the International Conference of Speleology and Karstology at Istanbul, with the participation of about twenty foreign scholars, opened first at Beyazit de Stamboul University. For three days papers and discussions enlivened the sessions, broken by tours around the Bosporus. During the following two weeks the members of the Conference took a field trip across Anatolia, through Ankara, Konya, Mersin, Antalya, Burdur, Izmir, Bursa, and Istanbul. They thus had the opportunity to investigate the principal karstic phenomena of Turkey; the Konya obrouks, travertines of' Yerkòpru and Antalya, caves of the Mersin region, vauclusian springs of Irviz and Manavgat, and so forth. The interest of these occurrences of Anatolian karst is unquestionable; in addition to the scientific problems they pose, they represent a great economic value either as tourist centres or as producers of electric energy and sources of water for irrigation.
Arranged by geologist Dr. Temucin Aygen, the International Conference of Speleology and Karstology at Istanbul, with the participation of about twenty foreign scholars, opened first at Beyazit de Stamboul University. For three days papers and discussions enlivened the sessions, broken by tours around the Bosporus. During the following two weeks the members of the Conference took a field trip across Anatolia, through Ankara, Konya, Mersin, Antalya, Burdur, Izmir, Bursa, and Istanbul. They thus had the opportunity to investigate the principal karstic phenomena of Turkey; the Konya obrouks, travertines of' Yerkòpru and Antalya, caves of the Mersin region, vauclusian springs of Irviz and Manavgat, and so forth. The interest of these occurrences of Anatolian karst is unquestionable; in addition to the scientific problems they pose, they represent a great economic value either as tourist centres or as producers of electric energy and sources of water for irrigation.
Dr Klaus Dobat (Tubingen) and Madame Dobat have collected the following terrestrial Isopods from caves of Eregli on the coasts of the Black Sea, North of Turkey: 1) Ligidium (Ligidium) assimile sp. nov., trogloxene widely distributed in the northern Anatolian territories; 2) Chasmatoniscus oculatus gen. et sp. nov., troglophile; 3) Trichoniscus (Trichoniscus) heracleotis sp. nov., troglobic; 4) Cylisticus (Platycylisticus) dobati subgen. et sp. nov., troglophile; 5) Cylisticus (Cylisticus) mechthildae sp. nov., troglobic. The author gives the descriptions together with figures of all these new Oniscoidea in this paper, M. Dobat describes the caves of Eregli and lists the animals herein found.
Dr Klaus Dobat (Tubingen) and Madame Dobat have collected the following terrestrial Isopods from caves of Eregli on the coasts of the Black Sea, North of Turkey: 1) Ligidium (Ligidium) assimile sp. nov., trogloxene widely distributed in the northern Anatolian territories; 2) Chasmatoniscus oculatus gen. et sp. nov., troglophile; 3) Trichoniscus (Trichoniscus) heracleotis sp. nov., troglobic; 4) Cylisticus (Platycylisticus) dobati subgen. et sp. nov., troglophile; 5) Cylisticus (Cylisticus) mechthildae sp. nov., troglobic. The author gives the descriptions together with figures of all these new Oniscoidea in this paper, M. Dobat describes the caves of Eregli and lists the animals herein found.
KARSTIC HYDROGEOLOGY OF THE IRMENE POLJE - BODRUM (TURKEY) - The Irmene polje (25 km2) is located in the Bodrum peninsula, Turkey. The formation exposed, are coloured argilaceous schists, blackish shales and sandstones of a paleozoic age. They are overlapped by unconformable carbonate formations of Early Triassic to Late Jurassic. The karstification is mostly developed on the non-dolomitic parts of the fissured limestones. The groundwater flow is generally northwards, towards coastal or submarine springs. Thus, it is calculated that a discharge of about 40 l/s can be obtained from possible wells to supply water for the Irmene village. We propose to increase the infiltration rate within the karstic aquifer by building barriers, which would favour runoff towards natural wells or sinks not active for the moment.
Gamma-ray scintillation spectrometry has been used to measure the 137Cs and 134Cs levels and depth distributions in soil of a tea plantation in the Eastern Black Sea region in Turkey. Soil samples were collected in November 1987. The depth distribution was found to be exponential with [alpha] = 0.16 cm-1 and the exposure rate arising therefrom is calculated as 17.46 [mu]R/h over the ground surface
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.
The study area is situated within the complex structure and karst system of the western Taurids. Basinwide interpretation of the structural features, each of which has great importance, will enlighten many complicated hydrogeologic problems encountered in the area. Thus, considering the previous views on the structural geology of the area, an interpretation of the structural and tectonic features of the study area by means of satellite images was undertaken, and based on the data gained, new approaches were suggested to solve the hydrogeological problems, in particular, determination of the recharge-discharge mechanisms of the Olukkopru and Dumanli karst springs, which are the most important karst groundwater discharge points in the region, has been attempted. Within the framework of this study, a tectonic-lineament map of a large area covering Eqirdir, Beysehir, and Sugla lakes at the north and the basins to the south of these lakes was prepared
This study aims to define the karst related problems that may arise during the implementation of three weir and two dam projects planned in the Lower Zamanti Basin. Based on the regional hydrogeological investi-gations, the problems that may arise during the construction phase were outlined and relevant investigation techniques were proposed. This study showed that no water leakage problem is expected in the reservoir areas of Çamlıca II , Çamlıca III, Tatlar weirs and Göktaş dam, while the possibility of leakage thorugh the reservoir of the Topraktaş dam should be investigated by means of geophysical surveys and exploratory boreholes. The same suggestions are also va¬lid for the energy tunnels of Çamlıca II, Tatlar weirs and Göktaş dam where dewatering of karst groundwater would be an important problem.
In karst basins where hydraulic structures ARE designed to utilize the existing water potential, de¬termination of the distinct groundwater flow patterns and the inter-relations among them bears great importance from the view point of the geotechnical safety of the structure. The combined use of hydrologic, hydrochemical and isotopic data enables us to identify different groundwater flow patterns prevailing in karst basins. Once the inter-relation among the groundwater flow patterns is established, the decision regarding the implementation of projects will be easier. Hydrologic investigations including analyses of the "stream yield" and "groundwater balance", produce invaluable in¬formation that can be used to locate the important karstic effluents along the basin. The study of the hydrochemistry of major karstic effluents reveals reliable information on the "depth" of underground circulation and the "recharge condi¬tions" dominating within the karst system. Evaluation of environmental isotopic data introduces important details pertai¬ning to the "mean recharge area elevations" and "turn-over times" of the karst waters and inter-relation among each other. Sometimes very closely located karstic outflows may have quite different circulation/recharge characteristics. This paper attempts to demonstrate the combined use of hydrologic, hydrochemical and isotopic techniques for the determination of the "deep-regional" and "shallow" groundwater circulation patterns existing in the Lower Zamanti Basin.