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Browsing by Subject "exotics"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Debryty kohezyjne warstw istebniańskich (senon górny - paleocen) na zachód od Skawy
    (Wydawnictwa AGH, 2005) Strzeboński, Piotr Andrzej
    Cohesive debrites of the Istebna Beds occur within the western part of the Silesian Unit of the Outer Flysch Carpathians. The lithofacies described represents siliciclastic deposits consisting of mud-sandy matrix and scattered, psephite-size clasts. The cohesive debrites originated from sediment gravity flows that were generated on the slope of sedimentary basin by mass-movements and were deposed as aprons by submarine, cohesive debris flows. The highest content of the cohesive debrites (12% of the succession thickness) has been recorded within the Istebna Beds of the Silesian Beskid Mts, the medium in the Beskid Mały Mts (7%) and the lowest within the Moravian Beskid Mts (2%). Most frequently the lithofacies presented occurs within the Lower Istebna Sandstones, while the cohesive debrites with the biggest lithoclasts occur within the top part of the Lower Istebna Shales. The exotic material with dominating crystalline rocks, mostly gneisses, schists and granitoids, makes up 25% of the described deposits (exotic cohesive debrites). Various types of limestones prevail among much rarer clasts of sedimentary rocks and the amount of the limestones distinctly increases going to the east.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Rocky Sandstone Landforms in Istebna, Silesian Beskid (Outer Carpathians, Poland)
    (Wydawnictwa AGH, 2018) Starzec, Krzysztof; Waśkowska, Anna; Golonka, Jan; Gawęda, Aleksandra; Szopa, Krzysztof
    The rocky sandstone landforms, which are interesting geotouristic objects, occur in the eastern part of Istebna village. The series of rock walls and pulpits is located on the southern slopes of the Karolówka Range. Fragments of the upper sandstones of Istebna Formation (Upper Cretaceous–Paleocene) crop out within these rocks. They represent the period of intensive supply of the clastic material into the Outer Carpathian Silesian Basin leading to the origin of thick-bedded, very coarse-grained sandstones and conglomerates. The occurrence of large, numerous crystalline rocks is a particular and unique feature of these outcrops. These magmatic and metamorphic rocks were derived from the basement of the Carpathian basins. This paper describes the detailed characteristics of these rocky landform objects.