Dana Havlin Novakova - Academia.edu (original) (raw)
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The occurrence of Ciezkow sandstone layer on map sheet 25-234 Horni Becva is limited to narrow NW... more The occurrence of Ciezkow sandstone layer on map sheet 25-234 Horni Becva is limited to narrow NW-SE zone between Vigantice and Horni Becva. Among rocks of Flysch Belt of Western Carpathians Ciezkow sandstone has anomalous features – is very cleanly selected and silicious (80 % of quartz). Paleogene rocks and sediments (particularly their matrix) are usually calciferous. Lithological composition of Ciezkow sandstone makes specific conditions in groundwater circle and has an influent to ground water chemical composition: ground water has low mineralization and pH. Also the rock environment has similar conditions like crystalline rock environment. On surface has evolved peat bogs and specific vegetation – phytocenoses typical for acid soils without nutrients.
Environmental Geology, 2007
The Czech Geological Survey has been conducting geological mapping on the scale 1:50,000 in sever... more The Czech Geological Survey has been conducting geological mapping on the scale 1:50,000 in several areas of Nicaragua and El Salvador since 1997. In 2004, an area of approximately 750 km 2 was studied in the northern parts of the La Libertad, San Salvador, and Cuscatlá n districts in El Salvador from the perspective of geological hazards and hydrogeology. A basic description of the water cycle conditions and ground water units of this area were made for the first time, including the study of infiltration zones, transit zones, and zones of drainage. A 1:50,000 scale hydrogeological map, and a vulnerability map for one selected drainage area of the Río Matizate river were designed. The basic hydrogeological conditions, hydrochemical groundwater characteristics, the potential for groundwater contamination, and the main sources of pollution were also described.
The occurrence of Ciezkow sandstone layer on map sheet 25-234 Horni Becva is limited to narrow NW... more The occurrence of Ciezkow sandstone layer on map sheet 25-234 Horni Becva is limited to narrow NW-SE zone between Vigantice and Horni Becva. Among rocks of Flysch Belt of Western Carpathians Ciezkow sandstone has anomalous features – is very cleanly selected and silicious (80 % of quartz). Paleogene rocks and sediments (particularly their matrix) are usually calciferous. Lithological composition of Ciezkow sandstone makes specific conditions in groundwater circle and has an influent to ground water chemical composition: ground water has low mineralization and pH. Also the rock environment has similar conditions like crystalline rock environment. On surface has evolved peat bogs and specific vegetation – phytocenoses typical for acid soils without nutrients.
Environmental Geology, 2007
The Czech Geological Survey has been conducting geological mapping on the scale 1:50,000 in sever... more The Czech Geological Survey has been conducting geological mapping on the scale 1:50,000 in several areas of Nicaragua and El Salvador since 1997. In 2004, an area of approximately 750 km 2 was studied in the northern parts of the La Libertad, San Salvador, and Cuscatlá n districts in El Salvador from the perspective of geological hazards and hydrogeology. A basic description of the water cycle conditions and ground water units of this area were made for the first time, including the study of infiltration zones, transit zones, and zones of drainage. A 1:50,000 scale hydrogeological map, and a vulnerability map for one selected drainage area of the Río Matizate river were designed. The basic hydrogeological conditions, hydrochemical groundwater characteristics, the potential for groundwater contamination, and the main sources of pollution were also described.