|
|
| Home >
Science & Research >
Geology >
Crystalline complexes |
|
|
Regional research of crystalline complexes
RNDr. Jaroslava Pertoldová, CSc.
head of the department
|
 |
|
The department of regional geology of crystalline rocks focuses on geological exploration and expertises related to complexes of metamorphic and igneous rocks on the teritory of the Bohemian Massif.
|
Crystalline complexes composed of metamorphic and plutonic rocks represent more than 90 % of the surface of continents. They represent source material for all sedimentary and part of volcanic rocks. Particularly in the Czech Republic the crystalline rocks crop out on more than 50 % of its present surface. Moreover the crystalline complexes form a basement for sedimentary cover formations. The composion and tectonics of the crystalline basement determine a character of geological and topographical evolution of each single region, so that they indirectly influence also the biosphere. |
 |
The department of crystalline geology focuses also on the study of deep geological structure of the Earth's crust. For this purpose new data are systematically collected and interpreted in accord with older geological and geophysical results. An integral part of the department represents Remote Sensing Center, which interprets a complex file of satellite or airborn imagery together with other available geo-information resources. The research is not focused only on the Czech Republic, but the scientists work also in other challenging regions all over the world. The results of research are then published or applied in praxis.
 |
The rock information processing requires an archivation of rock samples, detailed laboratory analyses of rock specimens, their compilation to GIS-based databases and naturally it finalizes with synthesis and interpretations of the acquired results. Alltogether it leads to better understanding of the evolution of individual rock complexes, assesment of their value for the human population needs and quantification of the influence of rock environment on the surrounding biosphere. |
Projects
Geopark Stožec (in czech only)
Tunnel Bedřichov (in czech only)
|
The main domains in research of crystalline rocks 
- Basic characteristics of petrological, geochemical, structural and metamorphic features of crystalline rocks follower by reconstruction of their evolution (using all available analytic methods). Modelling of metamorphic evolution including PT paths, geochronology, unraveling evolution and emplacement of magmas, description of principal geological units and tectonic structures in a crystalline basement.
- Geological mapping of crystalline complexes, construction of detailed (scale of 1 : 10 000 or larger), basic (scale of 1 : 25 000 and 1 : 50 000) and general geological maps (scale of 1 : 200 000, 1 : 500 000 or smaller).
- Data aquisition and processing from the crystalline rocks in the Czech Republic intended for specialized databases (protection of geological localities, database of drillholes, mapping documentation), continuous development of such databases and their interpretation (e.g. construction of 3D models from drillhole databases).
- Coordination of regional projects focused on deep structure of continental crust and interpretation of indirect geological data (e.g. geophysical sections).
- Geological research focused on protection of rock environment (delimitation of unique geological localities, construction of specialized geological maps for natural preserves, colaboration in examining migration of dangerous elements or chemical compounds from the crystalline bedrock to overlying soils).
- Assesment of risks related to geological and tectonic fabrics of a bedrock, detailed mapping of crystalline rocks in regions predisposed to landslides.
- Examination of specialized projects for state organs or scientific institutions. Service of specialized geologists for 11 regions of the Czech Republic.
- Cooperation with foreign geological surveys and scientific institutions, particularly in unifing geological interpretations across state borders and compilation of geological maps from the border regions.
- Expertise abroad and participation of specialists on foreign geological expeditions.
- Pedagogical activities in the Czech Republic or abroad, organization of excursions for students, appraisals of MSc and PhD theses, cooperation with specialists from foreign universities.
- Organization or co-organization of international scientific meetings in the Czech Republic.
- Scientific activities: application of grants and research projects, their coordination and solution, presentation of results on seminars and international conferences or in specialized journals either local or international. Cooperation in international research projects funded by the EU, coordination and research in the IGCP international projects. Participation of specialists on crystalline rocks in scientific residencies abroad, in Czech and international geological organizations, in editorial boards of geological journals (Bulletin of Geosciences, Journal of the Czech Geological Society) and review services for geological journals.
- Science popularization by presentations for broad public, also in cooperation with the Czech geological society. Cooperation with humanity- and natural science- organizations, with management of national parks and natural preserves. cooperation on popular-scientific publications.
|
|
|
|
|
|
|
|
|
|
Contacts
Staff of the Department of the Regional Geology of Crystalline Complexes |
Recent publications
Recent publications of the Regional Geology Crystalline Complexes Department |
Elevation model of the crystalline basement (red) and the surface
of the Upper Paleozoic sediments (green) with cross-sections through
Tertiary volcanics (golden yellow), NE part of the Doupovské hory Mts.,
map sheet 11-222 Kadaň, view from SE. |
Porphyric variety of the durbachite
of the Knížecí stolec type – detail of
a zoned phenocryst of K-feldspar
with inclusions of biotite, plagioclase, and accessory minerals (crossed polarizers). |
|
|
cz