Record details

    Reconstruction of Vegetation and Landscape Development during Volcanic Activity in the České Středohoří Mountains
Statement of responsibility
    Zlatko Kvaček, Harald Walther
Other titles
    HIBSCH 2002 Symposium, Teplá near Třebenice, Ústí nad Labem, Mariánské Lázně, Czech Republic, June 3-8, 2002 (Variant.)
    Kvaček, Zlatko, 1937-
    Walther, Harald
Source title - serial
    Vol. 15
    p. 60-64
    2 obr., 2 s. bibl.
    Zkr. název ser.: Geolines (Praha)
Subject group
    stratigrafická hranice
    vulkanity Českého středohoří
Geographical name
    Bechlejovice (Děčín)
    Kučlín (Teplice)
    Kundratice (Litoměřice)
    Roudníky (Ústí nad Labem)
    Seifhennersdorf (Německo)
    Suletice (Ústí nad Labem)
    Větruše (Ústí nad Labem)
    Žichov (Teplice)
    Žitenice (Litoměřice)
Abstract (in english)
   Volcanogenic strata of Upper Eocene age formed in the early stages of surface volcanic activity in the České středohoří Mountains are documented by ancient fish fauna, palynology and macropalaeobotany as well as radiometric dating at Kučlín, Kostomlaty, and Lbín. A volcanogenic lake system apparently existed in the southern part of the České středohoří Mts. at the time, and was drained by rivers and basin systems (Staré Sedlo Fm.) across Bohemia and Saxony towards the North Sea, as suggesled by the marine fish element (Morone). Volcanogenic sites reveal mainly Mesophytic forest vegetation reflecting paratropical-subtropical seasonal climate, while the plant assemblages of the Staré Sedlo Fm. correspond to subtropical gallery and riverine forests along riverbanks. The Late Eocene landscape of northern Bohemia was apparently an uneven peneplain wilh lowland rivers, lakes, maars and moderate volcanic uplands.
   At the Eocene/Oligocene boundary, the drainage system towards Saxony was interrupted. As the rift continued its deepening, separate shallow coal basins and lakes covered most of the České středohoří Mts., its periphery and the adjacent Most Basin. Sedimentation was often disturbed by volcanic activity, when lava flows entered basin waters. According to the changing fish faunas and vegetation, four levels can be recognised within the Ústí and Děčín formations: Roudníky-Větruše with ammiids and Juniperus; Kundratice-Seifhlennersdorf with the Gobius-Thaumaturus fish assemblage and taxads; Jedlka, Suletice, Markvartice with Calocedrus and a combination of Thaumaturus and Paleorutilus; and Matrý-Lužice/ Žichov with pines and Palaeorutilus. At first, vegetation was dominated by mixed Mesophytic and deciduous forests, reflecting a climatic deterioration at the Eocene/Oligocene boundary. Warming trends can be noticed higher up in the stratal succession.
   The youngest phase of the České středohoří Mts. (Dobrná Fm.) is not accompanied by plant and animal fossils. Information about the ecosystems (Cunninghamia, Taiwania, Fagus and Palaerutilus), climate and environment is provided only by the maar fill at Kleinsaubernitz in Saxony, which preceded this last period of landscape development, when a new river system (Hlavačov Gravel and Sand) originated in central Bohemia
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    21. 3. 2008
Import date
    8. 8. 2012