KRIžNA JAMA (SW SLOVENIA): NUMERICAL- AND CORRELATED-AGES FROM CAVE BEAR-BEARING SEDIMENTS PRIMERJAVA ŠTEVILČNE IN KORELIRANE STAROSTI SEDIMENTOV Z OSTANKI JAMSKEGA MEDVEDA V KRIžNI JAMI

UDC 902.03:551.435.84(497.4 Križna jama) Pavel Bosak, Petr Pruner, Nadja Zupan Hajna, Helena Herc- man, Andrej Mihevc & Jan Wagner: Križna jama (SW Slove- nia): Numerical- and correlated- ages from Cave Bear-bear- ing sediments Križna jama is a large river cave located between Losko and Cerknisko poljes under Križna gora Mount in soutern Slo- venia. Itas been known since te mid-19 t� century due to numerous cave bear finds. The cave is filled by complicated sequences of cave fluvial and lacustrine sediments, wicare recently partly eroded. We studied two paleontological exca - vations and profiles in te Medvedji rov to contribute to te solution of dating of bone-bearing litologicalorizons. The Križna jama I profile consists of alternation of speleotem lay- ers (flowstone seets witsmall stalagmites, sometimes witin situ cemented Ursus gr. spelaeus bones) and fine-grained silici - clastics often witbones of cave bear. It can be correlated wit � te upper part of te Križna jama II profile, but wita sligtly less preserved stratigrapic record. Radiocarbon and U-series dates clearly indicate two different ages of cave bear tanato- cenoses in te Križna jama I profile: tose above flowstone crusts were dated to ca. 47-45 ka by radiocarbon dating; tose included in speleotem layers and clay interbeds are older t � an