TY - JOUR A1 - Dvorak,J. T1 - Neogene valley fill near Jedovnice and the question of age of main cave levels in the northern part of the Moravian karst JF - Journal of the Czech Geological Society JA - J. Czech Geol. Soc. Y1 - 1994 VL - 39 IS - 2-3 SP - 235 EP - 240 CY - Prague PB - Czech Geological Society SN - 1803-1943 (online), 1802-6222 (print) AV - Free UR - http://www.jgeosci.org/index.php?pg=detail&ID=JCGS.672 L1 - http://www.jgeosci.org/content/Dvorak_1994.pdf AB - Detailed gravimetric measurements in the southhern vicinity of Jedovnice in the Moravian Karst proved erosional nature of depressions filled with lower Badenian sediments. Following data of hydrogeologic wells and altitudinal comparison, the existence of pre-Badenian blind valley to southwest of Jedovnice and pre-Badenian cave levels between Jedovnice and Byci skala in the Krtiny Valley were proved.The southern part of the Drahany Upland was drained, during Paleogene period, in the north - south direction into sea embayment of subsiding Nesvacilka block southeast of Brno. The highest discharge had Svitava River draining smaller tributary basins of Punkva River, paleo-Jedovnicky and Krtinsky Creeks. Cave level at Sloup and Holstejn is connected with this valley system. Ramp valley of Vyskov Gate was originated in lower Karpathian and caused rapid backward erosion of streams flowing in northwest- southeast direction. Piracy of paleo-Rakovecky Creek beheaded paleo-Jedovnicky creek in southeastern vicinity of Jedovnice. In that time, paleo-Jedovnicky Creek was deeply entrenched in lower Carboniferous elastics (130 m) and entering pure Devonian limestones disappeared in subhorizontal cave system at the end of blind valey. Karst spring was situated in the Byci skala Cave in Krtinske Valley. Large portion of the Drahany Upland was submerged in lower Badenian (Neogene) sea. Jedovnice blind valley was filled by marine Badenian deposits. After the regression, new valley was formed by Jedovnicky creak. Waters fall down in 90 m deep chasm into cave system linked with pre-Badenian cave level. ER -