Naravni kamen so v okolici Ljubljane (Emona) izkoriščali in uporabljali že v rimskem obdobju. Na tem območju so ohranjeni številni kamniti spomeniki iz tistega časa. V članku je predstavljena analiza ...kamnine dveh nagrobnih stel, najdenih na južnem obrobju Ljubljanskega barja, na Ižanskem: nagrobnik za Kviemonija in njegovo družino iz cerkve sv. Janeza Krstnika v Podkraju pri Tomišlju in nagrobnik za Petona z Marofa na Igu (sekundarni najdišči). Na podlagi makroskopskega in mikroskopskega opisa sklepamo, da je spomenik iz Podkraja izklesan iz litiotidnega apnenca spodnjejurske starosti, spomenik z Iga pa iz ooidnega apnenca, ki po starosti sodi v vrhnji del spodnje jure ali v srednjo juro. Oba litološka različka najdemo na južnem obrobju Ljubljanskega barja, pri čemer je najbolj verjetno nahajališče litiotidnega apnenca okolica Podpeči.
Dolina Triglavskih jezer Brancelj, Anton; Dakskobler, Igor; Erhartič, Bojan ...
Geografija Slovenije,
2015
eBook
Odprti dostop
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.
The Rock Physics Handbook addresses the relationships between geophysical observations and the underlying physical properties of rocks. It distills a vast quantity of background theory and laboratory ...results into a series of concise chapters that provide practical solutions to problems in geophysical data interpretation. This expanded second edition presents major new chapters on statistical rock physics and velocity-porosity-clay models for clastic sediments. Other new and expanded topics include anisotropic seismic signatures, borehole waves, models for fractured media, poroelastic models, and attenuation models. This new edition also provides an enhanced set of appendices with key empirical results, data tables, and an atlas of reservoir rock properties – extended to include carbonates, clays, gas hydrates, and heavy oils. Supported by a website hosting MATLAB routines for implementing the various rock physics formulas, this book is a vital resource for advanced students and university faculty, as well as petroleum industry geophysicists and engineers.
Research represent in this monograph (Incomplete Solution Of Carbonate Rocks In Karst Caves Of Slovenia) was dedicated to incomplete solution of limestones and dolomites in karst caves~that is to ...occurrence of thick, soft weathered zones of “soluble” residue of carbonate rocks. With field and laboratory analyses I have tried to find out what is happening within the carbonate rocks during weathering and why they do not dissolve completely. Solution penetrates into the rock along various textures and structures. Results of analysis have shown that during weathering limestones and dolomites become purer~Mg, Sr and U are leached out, structure of the rock becomes more porous. In the cases when surface of weathered rock come in contact with flowing water, the water tears exposed particles and transports them away. If water does not flow over the exposed particles fast enough, they remain attached to the wall of the cave. The ratio between corrosion and the mechanical erosion of carbonate rocks on cave passages walls is more significant for the formation of roughness and rocky relief on the wall than for the growth of the passage. Microorganisms are present in the processes, but it is not yet known if they contribute to the weathering. From research follows that zones of white porous rock on cave walls are a product of weathering and are not precipitated secondary minerals.
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