Petrophysical and Sedimentological Analyses of Siklós Ornamental Limestones, S-Hungary

Abstract

The two studied ornamental stones, `Siklós-green´ and `Siklós-rose´ are quarried in the Villány Mountains in South Hungary. The former one belongs to the Middle \hboxTriassic Zuhánya Limestone Formation while the latter one is a part of the Upper Jurassic Szársomlyó Limestone Formation. Besides pinkish, yellow and white varieties of `Siklós-rose´ also exist. Zuhánya Limestone was formed in an outer ramp setting representing the deepest facies. Szársomlyó Limestone contains pelagic fauna, microoncoids and peloids. The microoncoids were accumulated in a relatively shallow part of a drowned platform and were redeposited. The petrophysical tests showed that uniaxial compressive strength of both limestones was in the order of 80 MPa. It is easy to polish them and their polished surfaces are decorative. Both stones are used as inner wall or floor cover but due to its frost resistance `Siklós-rose´ is also applicable for outer surfaces. The byproduct of ornamental stone quarries are appropriate for aggregates. Better petrophysical properties of `Siklós-rose´ are attributed to the more homogeneous texture of the Jurassic limestone.