Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
The Middle Holocene in slope deposits at Karlštejn-Budňany
Abstract
This article compares two sections representing two different neighbouring accumulation areas with subfossil malacofaunas. The age of both stratigraphically isolated malacofaunas is obviously Middle Holocene but they lack direct biostratigraphical links with their footwall and hanging wall. Moreover. it is remarkable in the case of the newly studied locality situated behind the "U Koruny" (The Crown) inn that the malacologically rich beds No. 4 and 5 are underlain by layers of virtually the same slope deposits which are almost entirely sterile despite the fact that the matrix of the stony talus consists completely of either sandy soil sinter or the calcium-carbonate content is in the clayey material of the slope deposits unusually high. In all similar localities (either in CaC03-enriched horizons or in those formed by soil sinters) investigated in the Bohemian Karst by V. Lozek these have always an abundant malacofauna which enables to reconstruct the development in the pre-mid Holocene period. regardless whether the CaC03 content is syngenetic or secondary.
