Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)

Geological setting of the Čeřeniště slope movement locality

 

Vladimír Cajz

Geoscience Research Reports 33, 2000 (GRR for 1999), pages 177–179

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Abstract

Locality of deep-seated slope movement near Čeřeniště village is situated within the superficial volcanic products of the České středohoří Mts. volcanosedimentary complex. These products are divided into three Formations due to the lithology. Rocks of all these Formations together with trachytic intrusions and Cretaceous sediments underlying the volcanics are preserved in close surroundings of the locality. It is caused by deep erosional cut of the creek and tectonics, too. The volcanics of the lower stratigraphic unit, the Ústí Formation, are sliden down the steep slope. This movement begins with great blocks sliding along subvertical planes and continues as a slow debris flow. The volcanics are represented by solid and argilized basanitic lavas and clayey volcaniclastics of hyaloclastic origin with intercalations of sediments as sands, clays, coal seam and diatomites. Deep subvertical planes are probably rising from the jointing of lava flows and may be influenced by small-scale brittle tectonics accompanying the faults. The presence of argilic material is essential for the movement process.