Stone heritage in Southeast Slovenia
M. Golež, B. Mirtič, 2015. "Stone heritage in Southeast Slovenia", Global Heritage Stone: Towards International Recognition of Building and Ornamental Stones, D. Pereira, B. R. Marker, S. Kramar, B. J. Cooper, B. E. Schouenborg
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The landscape of southeast Slovenia and its heritage in stone is, in terms of geology, primarily identified through the application of various types of sandstone of Miocene age, from those of Lower Miocene found in the wider areas of Celje and Ptuj to those of Middle Miocene found in and around Šmarje pri Jelšah and Rogaška Slatina. The inactive quarries in this region reveal traces of stonemasonry, while the outcrops of clastic sedimentary rocks reveal their diverse geological heritage. Hence, the wealth of natural and cultural heritage of a place is intertwined in one spot, offering an opportunity to make stonemasonry, stonemasons’ products, the traditional technological know-how, as well as arts and sciences, popular. With the stone heritage of southeast Slovenia gravely threatened, the abandoned quarries identified represent potential sites for obtaining natural stone for the purposes of renovating architectural heritage structures in the Slovenian countryside and more widely, like in the case of the revitalization of the abandoned quarry in Strtenica.
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This volume provides a synopsis of current research on volcanic processes, as gained through the use of palaeomagnetic and rock magnetic techniques. Thermoremanent magnetization information provides a powerful means of deciphering thermal processes in volcanic deposits, including estimating the emplacement temperature of pyroclastic deposits, which allows us to understand better the rates of cooling during eruption and transport. Anisotropy of magnetic susceptibility and anisotropy of remanence are used primarily to investigate rock fabrics and to quantify flow dynamics in dykes, lava flows, and pyroclastic deposits, as well as identify vent locations. Rock-magnetic characteristics allow correlation of volcanic deposits, but also provide means to date volcanic deposits and to understand better their cooling history. Because lava flows are typically good recorders of past magnetic fields, data from them allow understanding of changes in geomagnetic field directions and intensity, providing clues on the origin of Earth’s magnetic field.