Lower Callovian
The outcrop is situated about 25 km west of Kielce. The outcrop has been described by Drewniak and Matyja (1992). Coordinates 58003 - 49482, sheet name (scale 1:25000) Rykoszyn. Lithology: The lithology is gaize (dispersed biogenic silica [mostly loose sponge spicules] in a carbonate matrix), overlain by clay intercalated with gaizes. The unit is followed by alternating marly limestones and marly shales (Jasna Góra beds), and by grey bedded wackestones and packstones (Grey Limestones), and further by grey sponge limestones (Morawica Limestone). Stratigraphy: The gaizes are of Callovian age, the limestones represent the Lower-Middle Oxfordian. Reference: Drewniak, A., and Matyja, B.A., 1992: Gnieďdziska; Callovian through Lower Oxfordian to lowermost Middle Oxfordian (Plicatilis Zone) succession. In: Matyja, B.A., Wierzbowski, A., and Radwa˝ski, A. (eds). Oxfordian and Kimmeridgian Joint Working Groups Meeting, Guide Book and Abstracts, 26-30. Warszawa.