In the paper the covered karstification was studied in four karst areas of Hungary using geophysical methods. Author established the dolines-with-ponor (subsidence doline) develop where the permeable coveringsedimentary rock is thin, or impermeable
beds of coveringsedimentary rock wedge out. Dolines-with-ponor may develop when the coveringsedimentary rock is thick if a pit developed earlier on the limestone floor. The characteristic features of covered karstification change on accumulation
surfaces. Author present the genetic types of covered karst forms and list their occurrences in different karst areas. - (AM)
Changes in the crust and in the sedimentarycover across the transition from the Arabian platform to the Mediterranean basin: evidence from seismic-refraction and sedimentary studies in Israel and in Sinaï
Vaasan Soderfjärden sedimenttiaineksen suojaama kambrikaudella muodostunut kraatteri. (Soderfjärden, Vaasa, western Finland: a crater covered with sedimentary material since its formation in the Cambrian)
The Soderfjärden crater has a diameter of 5-6 Km and its maximum depth exceeds 300 m in a peripheral ring which is covered with Lower Cambrian sedimentary rocks more than 200 m thick. Firm evidence of the process that formed the crater has been
A high resolution seismic study in the northern Sicilian basin, between Cape Milazzo and Aeolian Archipelago emphasizes the connection between the sicilian metamorphic basement and the volcanic body. The sedimentarycover includes two units
: the well developped sedimentary sequence of Sicilian origin and the reduced Aerolian volcanic sequence. The volcanic sedimentary unit is affected by a series of slides| the partial denudation of the volcanic cone can explain the preservation of the initial
Factors influencing solution in karren and on covered karst
The effect of the following factors on karstification were investigated : the presence of Pinus mugo, slope length, and slope angle (Totes Gebirge, Austria), the wind action (Diego de Almagro Island, Chile), the thickness and quality of covering
sedimentary rock (Bakony Mountains, Mecsek Mountains, Hungary) and the role of karst water (tsingies, Madagascar). - (AM)
Investigation of covered karst form development using geophysical measurements
. established continuous changing of the sedimentarycover along a cross-section. They produced a model of burrow development by using these data.
The AA. present the development of covered karst forms in the Bakony Mountains and those conditions which determine the formation of the various morphological types in the study. Using geophysical methods (vertical electrical sounding, multi
electrode measuring), they measured the resistivity of the rock in the sample areas. The results show that a covered karst form develops on the surface, which is younger than the pit of the limestone floor. By using multielectrode measurement, the AA
The Vlierzele sands (Eocene, Belgium) : a tidal ridge system in Tide-influenced sedimentary environments and facies.
. In the lower ranges of this facies, the intact megaripple forms have been preserved under a cover of vaguely horizontally laminated sands. The latter could be the result of rapid storm deposition on the lower flank of the sand ridge. - (Les AA.).
data have been employed to prepare a detailed isopach map of the non-consolidated recent sedimentarycover. The general distribution of isopachs in this area is clearly influenced by these morphostructural lines, which controlled the sedimentary
This work determines the nature of the recent sedimentary filling in the Bay of Cadiz sea bottom and adjacent continental shelf and establishes the main controlling factors on the Holocene marine sedimentation. Bathymetric, geophysical and drilling
Data are given on most conspicuous geologic and geomorphic anomalous features in the European North-West, including masses detached by glaciers; remnants of sedimentarycover removed considerably from areas of its continuous distribution
for paleogeographic reconstructions. In particular, they indicate that a sedimentarycover existed on the Baltic shield during the Paleozoic, and provide evidence for significant glacial erosion at the latest stage of the geologic history. - (L'A.).
Uber die Ausbildung der Deckschichten und Verwitterungszonen im sächsischen Erzgebirge und seinen nordlichen Vorland. (On the formation of sedimentarycovers and weathering zones in the Saxon Erz Gebirge and its northern foreland)
by Middle Pleistocene terrigenous sediments has been recognized. Presently, the Salento Peninsula landscape shows at its inner and western parts wide karstic surfaces, remnants of the middle Pleistocene sedimentarycover, and morphostructural ridges. - (NF)
The Salento area is a narrow peninsula composed of Cretaceous and Neogenic carbonatic rocks constituting the southernmost part of the emerged Apulian foreland. A karstic landscape shaped on Upper Cretaceous - Lower Pleistocene rocks and covered
Overprinting relationship among major and minor structures in the sedimentarycover of south-eastern Umbria and northern Latium provide significant information on the modes of compressional deformation propagation in the Umbria-Marche Apennines
The AA. investigated quantitatively the propagation of a reactivated strike-slip fault through a sedimentarycover with 5 simplified analogue models that reproduce a chain with its frontal allochtonous wedge overrunning the foreland. The results
. The original samples were taken from in-gully sedimentary structures with differing densities of established vegetation cover. The results showed that the use of salt-tolerant species in bio-reclamation of dispersive soils could reduce the need for gypsum
The physical and chemical properties of sodic gully bank soil material, deposited as in-channel sedimentary structures below a pipe system in alkaline marls, Colorado, were re-analysed for their dispersive status using a new methodology
Sedimentary and erosional phases responsible for the formation of fluviatile terraces are studied in a middle altitude environment. The importance of neotectonic phenomena is revealed by the shaping of alluvial channels as also their sedimentary
The Calabria-Peloritani Arc southern terrane (CPAST) is a stack of crystalline basement nappes, some of them provided with a widely outcropping Alpine sedimentarycover, sealed by clastics of the Stilo-Capo d'Orlando Formation (SCOF). A comparison
between the sedimentary cycles characterising the CPAST during the Oligocene-Early Miocene and those almost coeval of the Betic-Rifian internal units highlights their quite similar evolution. Thus it is reliable that both the orogenic belts originated from
In examining whether the denudational efficiency of scarp retreat was sufficient to account for the wide erosional gaps in the sedimentarycover, rates of scarp retreat were determined by using the information of dated volcanic material
The aim of this study was to analyse the frequency and magnitude of runoff, under natural rainfall conditions, in an arid ecosystem of longitudinal dunes covered by a thin microbial crust. This study is important for the understanding
of the redistribution of water resources, of soil development, and of their effect on various biological aspects such as the distribution and composition of the vegetation. In addition, this study is expected to contribute to a better understanding of sedimentary
by karst phenomena. The AA. describe the structures observed in the sedimentarycover that may result from the progressive solution of underlying limestones, and then discuss the possible tectonic meaning of at least some of these structures.