Rejestr zmian klimatycznych późnego glacjału i holocenu w obrębie torfowiska pod Kotoniem (Beskid Średni, Karpaty zewnętrzne)
Abstract
LATE GLACIAL AND HOLOCENE CLIMATIC CHANGES REGISTERED IN A PEAT BOG AT KOTOŃ MOUNT (BESKID ŚREDNI RANGE, OUTERCARPATHIANS; SOUTHERN POLAND)
Summary
On the southern slope of the pass located between Kotoń Mt. and Pękalówka Mt. (BeskidMakowski Mts), a colluvial vast landslide surrounded by two wedge-shaped niches occurs. At the foot of one of these niches, a longitudinal depression (gutter pipe type) filled up with a fen type peat bog was formed. The maximum depth of these deposits is about 4.7 m. At the bottom there occurs silt with gravel and a thin layer (10 cm) of strongly decomposed peat (dated at 12140 ±70 BP by a 14C method) and covered with clayey silt (4.18–3.85 m). This is overlain by moss fen and sedge-moss fen type peat (3.85–1.2 m) covered, in turn, by a thick mineral layer (1.2–0.2 m) composed of clay and silty clay. The profile ends with a thin level of sedge peat. Mineral cover was deposited in some stages; the first was ascribed to a wet period of the Boreal–Atlantic phase boundary, whereas the main was assigned to the Early Subboreal, and the Subatlantic phase. The radiocarbon datings, confirmed by a pollen analysis, indicate that the landslide depression formed during the BøllingInterstadial. The peat accumulation started with the Older Dryas and the AllerødInterstadial. The depositionof mineral (non-organic) layers that underlie the peat bog was linked to the wet phases recorded in the Early Atlantic, Early Subboreal, and Early Subatlantic.
Summary
On the southern slope of the pass located between Kotoń Mt. and Pękalówka Mt. (BeskidMakowski Mts), a colluvial vast landslide surrounded by two wedge-shaped niches occurs. At the foot of one of these niches, a longitudinal depression (gutter pipe type) filled up with a fen type peat bog was formed. The maximum depth of these deposits is about 4.7 m. At the bottom there occurs silt with gravel and a thin layer (10 cm) of strongly decomposed peat (dated at 12140 ±70 BP by a 14C method) and covered with clayey silt (4.18–3.85 m). This is overlain by moss fen and sedge-moss fen type peat (3.85–1.2 m) covered, in turn, by a thick mineral layer (1.2–0.2 m) composed of clay and silty clay. The profile ends with a thin level of sedge peat. Mineral cover was deposited in some stages; the first was ascribed to a wet period of the Boreal–Atlantic phase boundary, whereas the main was assigned to the Early Subboreal, and the Subatlantic phase. The radiocarbon datings, confirmed by a pollen analysis, indicate that the landslide depression formed during the BøllingInterstadial. The peat accumulation started with the Older Dryas and the AllerødInterstadial. The depositionof mineral (non-organic) layers that underlie the peat bog was linked to the wet phases recorded in the Early Atlantic, Early Subboreal, and Early Subatlantic.