A5060805276- Geology and Paleoclimatology Research
- Clay minerals and soil interactions
- Geological Formations and Processes Exploration
- Soil Carbon and Nitrogen Dynamics
- Geochemistry and Elemental Analysis
- Groundwater and Isotope Geochemistry
- Geological formations and processes
- Soil erosion and sediment transport
- Geological and Geochemical Analysis
- Paleontology and Stratigraphy of Fossils
- Soil and Unsaturated Flow
- Geochemistry and Geologic Mapping
- Iron oxide chemistry and applications
- Coal and Its By-products
- Archaeology and ancient environmental studies
- Heavy metals in environment
- Pleistocene-Era Hominins and Archaeology
- Soil Management and Crop Yield
- Soil and Environmental Studies
- Phytase and its Applications
- Mining Techniques and Economics
- Plant Micronutrient Interactions and Effects
- Marine and environmental studies
- Karst Systems and Hydrogeology
- Bioenergy crop production and management
Czech Geological Survey
2011-2024
Czech Academy of Sciences, Institute of Inorganic Chemistry
2017-2021
Géosciences Rennes
2021
Université de Rennes
2021
Palacký University Olomouc
2021
Czech Academy of Sciences, Institute of Geology
2017
University of Bremen
2017
Knowledge of the origin magnesium (Mg) and calcium (Ca) in soil solutions catchment runoff helps to predict forest ecosystems’ vulnerability deficiencies essential nutrients an era climate change, environmental pollution bark-beetle calamities. Here we discuss isotope aspects Mg, Ca strontium (Sr) cycling a spruce-forested headwater relatively unpolluted part Central Europe. We investigated what extent Mg signatures reflect compositions specific Mg- Ca-rich minerals that easily dissolve...
Magnesium isotope ratios ( 26 Mg/ 24 Mg) can provide insights into the origin of Mg pools and fluxes in catchments where sources have distinct compositions, direction magnitude fractionations are known. Variability compositions was investigated three small, spruce-forested Czech Republic (Central Europe) situated along an industrial pollution gradient. The following combinations catchment characteristics were selected for study: low-Mg bedrock + low deposition (site LYS, underlain by...
Bentonites are considered to be the most suitable materials for multibarrier system of high-level radioactive waste repositories. Since BCV bentonite has been proved an ideal representative Czech Ca-Mg bentonites in this respect, it included Radioactive Waste Repository Authority (SÚRAO) buffer and backfill R&D programme. Detailed knowledge processes material induced by thermal loading provides invaluable assistance regarding evolution under repository conditions. Samples both original...
After 1989, the use of potassium (K) mineral fertilizers in Czech Republic dropped from ∼55 kg K ha−1 to a mean rate ∼6.5 last decade. In order test alternative solutions for fertilization, trioctahedral mica zinnwaldite (8% K), orthoclase (10% K) and waste Cínovec (Krušné Hory Mts/Erzgebirge, Republic), consisting primarily zinnwaldite, were applied as only sources spring barley. The minerals treated three different types high-energy mills under working conditions. Application rates range...
A study of the platinum group element (PGE) distribution in various lowermost Cambrian rock types Kunyang phosphate deposit south China revealed unusually high PGE concentrations (434 ppb Pt, 142 Pd, 57.97 Rh, <1 Ru, and 0.14 Ir) a whole-rock sample acid tuff that is interbedded with phosphorite. Stratigraphically above this unit an Mo-Ni–polyelement (including Au) phosphatic sulfidic black shale. The consists clastic glass fragments matrix clay minerals (dominantly mixed-layer...
Research Article| March 01, 2011 GEOCHEMICAL AND MINERALOGICAL CONSTRAINTS ON THE GENESIS OF OTJOSONDU FERROMANGANESE DEPOSIT, NAMIBIA: HYDROTHERMAL EXHALATIVE VERSUS HYDROGENETIC (INCLUDING SNOWBALL-EARTH) ORIGINS A.R. CABRAL; CABRAL Geology Department, Rhodes University, P.O. Box 94, Grahamstown, 6140, South Africa Corresponding author: Present address: Mineral Resources, Technische Universität Clausthal, Adolph-Roemer-Str. 2A, D-38678 Clausthal-Zellerfeld, Germany, e-mail:...
In the Czech Republic, negative potassium (K) budget in agricultural soils is caused by non-fertilization K and a decline of manure application. We investigated soil available, fixed (acid-extractable, Kfix) structural pools field trial with graduated application rate, established 1972 at 8 sites different climate soils. The content K-bearing minerals was evaluated on semi-quantitative scale XRD diffraction. K-feldspars were dominant source K. Total consisted 1.7-7.1% K, which positive...
Low application of fertilizer potassium (K) in intensive agriculture leads to a gradual decrease and, afterwards, steady state soil K determined by tests which are based on exchangeable (Kexch) extraction. In this situation, non-exchangeable (Knon-exch) is being released and therefore real plant availability does not necessarily correspond test K. This incoherency was investigated 14 agricultural soils with low as the Mehlich 3 method. Plant-available exhaustive cropping perennial ryegrass...
Time-trends of available potassium (K) in an arable land were investigated within long-term field fertilization experiments established 1979 at nine sites across climatic and soil conditions the Czech Republic. Annual K application rates necessary for a stabilization levels 108–283 mg kg−1 soil, ranged from 84–506 kg ha−1. According to multiple regression analysis, factors found be more important than properties explanation variability among sites. Higher keep constant level wetter colder...
This study examines the early stages of clastic deposition above main coal seam in Most Basin (Ohře Rift, NW Czech Republic).Eight drill cores were subjected to chemical analysis by X-ray fluorescence spectroscopy (XRF) and cation exchange capacity determination (CEC) corroborate local chemostratigraphic scheme extend its temporal spatial ranges.Additionally, four palaeomagnetic polarity for magnetostratigraphic dating, two frequency variations elemental compositions obtain...
Low application of fertilizer potassium (K) in intensive agriculture leads to a gradual decrease and, afterwards, steady state soil K determined by tests which are based on exchangeable (Kexch) extraction. In this situation, non-exchangeable (Knon-exch) is being released and therefore real plant availability does not necessarily correspond test K. This incoherency was investigated 14 agricultural soils with low as the Mehlich 3 method. Plant-available exhaustive cropping perennial ryegrass...
The reported study aimed to identify low-pH areas at the Sokolov lignite open pit, using space borne and ground-based spectroradiometry. Mineral spectroradiometry, from spaceborne sensors ground measurements, represents an alternative conventional methods provides efficient way characterise mines assess potential for acid mine drainage (AMD) discharge. mineralogical composition of sediments is primarily a determinant their inherent reflectance properties. However, additional...