Significant geological localities of the Czech Republic
Information about geological localities of special scientific or scenic interest in the Czech Republic is recorded in the database of Significant geological localities. The database contains information about localities that are specially protected to different degrees, as well as information about scientifically important or interesting localities, many of which merit proposals for their protection.
Each record contains a description of the geological features to be seen at the locality, the specific phenomena of interest and the degree of protection, together with information about conflicts of interest, a map on which the location is shown (also linked to the CGS Map Server) and references to relevant publications. Of the total number of 3060 localities listed on the Internet, more than 50% are accompanied by photographs (June 2018).
Sandstone mushroom rocks - Broumovské stěny
(Author: Pavla Gürtlerová)
Depiction of localities on maps combining different layers of geoinformation (GIS)
Overview of significant geological localities on the map of the Czech Republic
Structure and content of the database
Mostly, the database contains information about the location, geological characteristics and conservation status of significant geological localities in the Czech Republic. Supplementary information is also contained in other databases within the GIS.
Spatial information about each locality is given as geometrical coordinates in the system S-JTSK, and by depiction of the location on the appropriate map sheets at 1: 25 000 and 1: 50 000 scale (basic maps of intermediate scale) referring to the cadastre, district and region. Navigation on the ground is enabled by a brief description that guides visitors to the site of interest. In the database, the territory of the Czech Republic is divided into a number of „districts“ for which individual CGS geologists are responsible. The areas covered by these districts broadly correspond with the larger regional-geological units. A list of these districts and the geologists responsible is given here and more information about them here .
The Geological features of each locality are described, drawing attention to the geological phenomena considered worthy of preservation. The identity, origin, geological age, stratigraphy, structure, field relationships and geomorphology of the rocks at the site of interest are described systematically, together with the minerals and/or fossils of particular interest that are found there. The historical importance of the locality is also considered. Because of the hierarchical structure of the information about each site, it is possible to search the database using different scientific criteria, e.g. the geological and geomorphological processes involved, the geological age and stratigraphic position, the structural setting, the rock type and the mineralogy or the palaeontology. The site may also be identified as a potential stratotype or a geological section of special value for educational purposes.
Protection of the area: In the database two factors are taken into account. Geological localities are first grouped according to the level of protection designated for the inanimate features at the site. Secondly they are grouped with respect to location in the protected area.
Based on the level of protection, significant geological localities in the database of the Czech Geological Survey are classified into three groups: A – Significant geological localities protected under the terms of the current version of Act no.114/1992 Sb. Concerning the protection of nature and landscape. This act defines the special categories of protected areas. An explanation of these categories is given on the pages of the AOPK (Czech Agency for Nature and Landscape Protection). The significant geological localities listed in group A are those where a geological phenomenon is one of the subjects of protection or an important part of it. B – Significant geological localities recommended for protection. These localities are recommended for protection because interesting geological phenomena are exposed in them. Localities where the geological features are comparable with those already protected by law (category A) also belong in this category. C – Significant geological localities registered by the Czech Geological Survey. In this category are the sites where geological phenomena are recorded in the database of the CGS. These are chiefly outcrops of typical rocks and old mine workings recorded during the course of basic geological mapping at 1:25 000 scale or sites of interesting geological and geomorphological phenomena, but of less importance than those in category B. Localities, the importance of which has been diminished by damage or by becoming overgrown with vegetation, also belong here. The geological localities recorded in this category are considered significant because they may become more important in the future and some will then be transferred a higher category.
In addition to the level of protection, the database also gives the reason for protection , explaining why sites in the database were ranked in categories B and C. Information is also given about the current state of a locality and conflicts of interest that could have a negative influence on it.
The descriptions of the localities are completed by general information concerning the record itself, followed by a short bibliography and notes about how the data was compiled and updated. All photographs used in the completed description of a locality can be found by using the Database Application that is directly linked to the photoarchive of CGS . Detailed information about each image is given and other photographs from the surrounding area can also be viewed.
Contact of Cretaceous and Permian sediments in “Hronov–Poříčí” tectonic belt – Malé Svatoňovice
(Author: Pavla Gürtlerová)
History of the database and data resources
In the early nineties Mgr. Vladimír Lysenko (CGS) and RNDr Ivo Chlupáč DrSc. (Charles University of Prague, Faculty of Science) proposed the creation of the register of important geological localities. Themselves implemented their proposal together with their colleagues from CGS, Faculty of Science ChU, Academy of Sciences CR, museums and other institutions who shared in collection of information concerning geological localities and their protection. The register originated in CGS in the form of card files and between 1997 and 2001 it was converted to the database form. From 2001 this database is used in the Geographical Information System (GIS) of the Czech Geological Survey and it is gradually completed and updated primarily of information acquired by geological mapping in the scale 1: 25000. In last years records focused to the small-size especially protected areas are updated.
Cretaceous transgression over Carboniferous - Lobeč
(Author: Pavla Gürtlerová)
Accessibility of data
Database is accessible through the search application and map server of CGS. Records under edition are not accessible to public. The distribution of data is subordinated to the data regulation of CGS.
The Database - Significant geological localities of the Czech Republic [database online]. Praha, Czech Geol. Survey., 1998 [quoted 20XX-XX-XX]. Accessible from URL http://lokality.geology.cz/d.pl?l=e
Administration of the database
Markéta Vajskebrová, Pavla Gürtlerová, Helena Skarková
Comments and suggestions
Sendstone rocks – Teplické skály
(Author: Richard Gürtler)