A putative Tournaisian and Visean volcanic-sedimentary succession in the Lublin Basin, SE Poland: depositional processes, petrological characteristics and sequence stratigraphy

The aim of this study was to establish the stratigraphic extent a putative Tournaisian Stage within Carboniferous succession in Lublin Basin. oldest part succession, known as Huczwa Formation and comprising depositional sequences 1–4, investigated based on lithofacies analysis, sequence stratigraphy petrographic studies. article provides descriptions sequences, parasequences (cyclothems) that were formed range environments (elements architecture) result volcanic processes – lava pyroclastic eruptions chemical weathering their products. Correlation of the West European global chronostratigraphic divisions, well Khoriv suite Lviv-Volyn Basin adjacent Ukraine, indicates late age for sequence 1, Visean for 2–4. There is gap between 1 2, spanning probably uppermost lower middle Visean. upper represented by FRST-LST deposits mainly volcaniclastic conglomerates sandstones developed braided-river channels incised valleys with hyperconcentrated flow processes. These deposits are represented by polymictic paraconglomerate lithic/sublithic/subarkose arenites or sublithic wackes, and contain predominantly grains acidic alkaline igneous rocks. This material came from Łukow-Wisznice Elevation Volynian Polesia region, located NE E Lublin Basin. In rocks tuffs appear which developed during activity at least three cones volcanoes source lavas central SW areas basin, SE area, previously undescribed. 2-4 consist sediments deposited valleys. TST HST accumulated shallow ramp-type carbonate shelf, clayey shelf deltaic environments.