33 research outputs found

    Jurassic and Cretaceous Stratigraphy and Sedimentary Evolution of the Julian Alps, NW Slovenia

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    A detailed stratigraphy of Jurassic and Cretaceous deep-water sediments in the Julian Alps is presented. The study areas are located at Mt. Mangart, in the Triglav Lakes Valley and in the broader surroundings of Bovec. The successions are paleogeographically attributed to the Bovec Basin and the Julian High, and correlated with similar successions elsewhere in the Southern Alps. The sedimentary evolution is reconstructed and discussed in relation to synsedimentary tectonics, eustatic sea-level fluctuations and global paleoceanographic changes. The monograph is a fundamental publication for stratigraphy and sedimentology of Jurassic and Cretaceous deposits in the Julian Alps.Avtor v monografiji podaja detajlno stratigrafsko razčlenitev jurskih in krednih globljemorskih zaporedij na več lokalitetah v Julijskih Alpah – na Mangartu, v Dolini Triglavskih jezer in v širši okolici Bovca. Stratigrafska zaporedja primerja s podobnimi zaporedji v severni Italiji in sedimentarno evolucijo ozemlja razlaga v povezavi z regionalnimi tektonskimi premiki, evstatičnimi nihanji morske gladine in globalnimi paleooceanografskimi spremembami. Knjiga je delo s področja regionalne geologije. Besedilo je v angleškem jeziku z izvlečkom v slovenščini

    Application of a mass movement susceptibility model in the heterogeneous Miocene clastic successions of the Slovenj Gradec Basin, northeast Slovenia

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    In Slovenia, mass movements are not only a threat to the population, but also a major environmental and social science challenge. Lithologically heterogeneous areas have been found to be problematic, and the Miocene Slovenj Gradec basin (in northeast Slovenia) is one such area. For this area, we developed landslide and rockfall susceptibility maps based on detailed geological research combined with statistical modeling schemes. Crucial factors include lithological composition, land use, geological structural elements, slope curvature, aspect and inclination, and bed dipping. The approach taken in the development of mass movement susceptibility maps presented here is transferable to other areas defined by heterogeneous lithology. Such maps could prove useful spatial planning, forestry, environmental protection, landscape architecture, and other fields

    Debris flooding magnitude estimation based on relation between dendrogeomorphological and meteorological records

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    Debris floods are mass movement events which are usually triggered by intense short duration rainfall events. They often occur on alluvial fans in an alpine environment. Due to their sever geohazard potential they pose a serious threat to infrastructure and human life. To minimize their threat understanding of their past magnitude occurrence is crucial. Dendrogeomorphology has proven to be a highly useful method in studies of past slope mass movements. However, establishing magnitudes of past events has so far been based on indirect indicators, such as: spatial distribution of affected trees, characteristics of tree injures and sedimentological records. In this study we present a method that directly estimates the magnitudes of past debris flood events on an alluvial fan using dendrogeomorphological and meteorological data sets. The studied dendrogeomorphological data set is based on tree-ring series from 105 sampled trees (Picea abies, Abies alba and Larix decidua) growing on an active alluvial fan in a typical alpine environment of the Julian Alps in NWSlovenia. Based on sudden growth suppression thirteen debris flood events since 1903 were dated. Meteorological data from a nearby meteorological station was used to determine the exact triggering meteorological event for ten events. Comparing the It index of affected trees and calculated return period of an individual triggering meteorological event established the magnitude of debris flooding.Weshowed thatmore trees are affected at high return period/intensity of the triggering meteorological event and therefore higher magnitudes of debris floods. This research presents the first combined use of dendrogeomorphological and meteorological data sets for magnitude estimation of historic debris flood events which could be successfully applied in similar environments

    Geomorphology and wine: the case of Malvasia in the Vipava valley, Slovenia

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    The concept of terroir incorporates interaction between geogenic and anthropogenic parameters and defines the typicity and quality of wine in a particular geographic area. Geomorphology represents one of the most important geogenic parameters of terroir. In 2008 we produced two wines from two different sites located within the same vineyard in the Vipava valley (Slovenia). Despite identical vine-growing and winemaking techniques, the two sites yielded grapes and wines of different quality. Both sites are identical in terms of macroclimate and bedrock, thus the differences are related to soil composition, drainage and microclimate, all directly linked to different geomorphic positions

    A glimpse of the lost Upper Triassic to Middle Jurassic architecture of the Dinaric Carbonate Platform margin and slope

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    In the southernmost outcrops of the Slovenian Basin the Middle Jurassic coarse-grained limestone breccia (mega)beds are interstratified within a succession that is otherwise dominated by hemipelagites and distal turbidites. In this paper, these beds are described as the Ponikve Breccia Member of the Tolmin Formation. We provide descriptions of the studied sections with detailed geological maps and analysis of the breccia lithoclasts. From the latter, a non-outcropping margin of the Dinaric Carbonate Platform is reconstructed. In the Late Triassic the platform margin was characterized by a Dachstein-type marginal reef. After the end-Triassic extinction event, the platform architecture remained, but the reefs were replaced by sand shoals characterized by ooids. In the late Early Jurassic and/or early Middle Jurassic a slope area might have been dissected by normal faults and a step-like paleotopography was formed. In the Bajocian, during a period of major regional geodynamic perturbations, extensional or transtensional tectonic activity intensified and triggered the large-scale collapses of the Dinaric Carbonate Platform margin producing the limestone breccias described herein. This may in turn have caused a backstepping of the platform margin, as is evident from the occurrence of Late Jurassic marginal reefs that are installed directly above the Upper Triassic and Lower Jurassic inner platform successions

    Dolina Triglavskih jezer

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    In 1924, the Triglav Lakes Valley was designated a protected area, which is today part of the central area of extensive Triglav National Park. The lakes give a special character to the valley, which also stands out for its other natural features. In terms of nonliving nature, this volume presents some of the valley’s geological, geomorphological, and hydrological characteristics, and, in terms of living nature, it presents its vegetation, focusing on botanical characteristics and forest. The volume also discusses the human presence and its impact on the appearance of the landscape.Leta 1924 je bilo v Dolini Triglavskih jezer vzpostavljeno zavarovano območje. Danes je del osrednjega dela obsežnejšega Triglavskega narodnega parka. Dolini dajejo poseben pečat jezera, izstopa pa tudi po drugih naravnih posebnostih. V okviru nežive narave so v knjigi predstavljene nekatere njene geološke, reliefne in vodne značilnosti, v okviru žive narave pa rastje, s poudarkom na botaničnih značilnostih in gozdu. Knjiga predstavlja tudi človekovo prisotnost in njegov vpliv na videz pokrajine

    Program module for control of production processes with use of digital camera

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    The diploma thesis describes software solution for controlling industrial processes with the help of digital camera. The developed software module is a part of application developed originally for optic fibre preform manufacturing, but can also be applied to other fields of industry. The digital camera solution functions as an independent module inside control application. During manufacturing process it captures images of manufactured part and sends them into its subsystem for further processing. Module is developed in such a manner that multiple different algorithms can easily be applied to images, according to process needs. Acquired data is then sent to various devices, which are part of bigger SCADA system. Camera control module is custom made control system useful in real industrial environment, where adaptation to process changes plays a vital role in production of high quality products. Since developed solution solves specific industrial problem as a whole, the diploma also describes basics of automation and process control. Basic elements needed for computer based process control are also described. In contrast to more widely accepted solutions in industry, software was developed using Microsoft .NET framework. The diploma tries to introduce the aspect of developing automation solutions from .NET developer's point of view. It also discusses advantages of using such technology in contrast to more traditional technologies used in automation

    Sedimentological and geomorphological characteristics of Quaternary deposits in the Planica-Tamar Valley in the Julian Alps (NW Slovenia)

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    We present a geomorphological map on a scale of 1:15,000, with detailed sedimentological descriptions, and a general relative spatio-temporal depositional reconstruction of Quaternary sediments in the Planica-Tamar Valley (NW Slovenia). After the Last Glacial Maximum, the retreating Quaternary glacier deposited large amounts of glacial sediments. These were followed by Holocene sediments, which differ in their sedimentological characteristics, transport mechanisms, and morphology. These sediments are deposited as sedimentary bodies with complex depositional geometries. They form areas of active, partly active, and inactive sedimentation in response to local/regional climate and bedrock geology. Previous research of the valley was mainly focused on bedrock mapping, while almost completely neglecting Quaternary deposits. This work is the first broader analysis of Quaternary sedimentary deposits in the research area, which offers an insight into the complex geomorphological and sedimentological processes, which shape the current mountainous landscape

    Anisian Strelovec Formation in the Robanov kot, Savinja Alps (Northern Slovenia)

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    A detailed sedimentological features of the Slatinski plaz section with a transition from the deep-water Anisian (Illyrian) Strelovec Formation to the Ladinian shallow-water Contrin Formation have been presented. The Strelovec Formation is divided into fie different lithostratigraphic units that are characterised by dark hemipelagic and pelagic thin-bedded limestones and dolomitic mudstones that are frequently intercalated with deposits of gravitymass flws, slump and slide to fie-grained low-density turbidity origin. The Strelovec Formation was deposited in a hydrodynamically quiet, pelagic deeper-water anoxic environment, most probably on a gentle platform slope. In the upper part of the formation, the presence of olistolith blocks of shallow-water limestones indicates the closing of the prograding shallow-water platform wedge. Massive dolostones of Unit 6 mark the complete filing of the basin and the beginning of the shallow-water sedimentation of the Contrin Formation in the Early Ladinian
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