A5042149275- Radioactivity and Radon Measurements
- Geochemistry and Geologic Mapping
- Radioactive contamination and transfer
- Nuclear and radioactivity studies
- Geological Formations and Processes Exploration
- Geochemistry and Elemental Analysis
- Geology and Paleoclimatology Research
- Marine and environmental studies
- Geological and Geochemical Analysis
- Mineralogy and Gemology Studies
- Ancient and Medieval Archaeology Studies
- Soil and Land Suitability Analysis
- Graphite, nuclear technology, radiation studies
- Paleontology and Stratigraphy of Fossils
- Geological and Geophysical Studies Worldwide
- Radiation Dose and Imaging
Institutul Geologic al României
2014-2023
University of Bucharest
2015
The specific activity and spatial distribution of 238U, 232Th 40K were determined in the surface soil from Lișava uranium mining sector. This sector belongs to Banat district, an historically important area Romania (an with closed mines a radioactive waste dump). Gamma-ray spectrometry using high-purity germanium (HPGe) detector was used measure naturally occurring radionuclides soil. average activities 197.21 Bq/kg for 16.21 543.21 40K. mineral contents selected rock samples (sandstones)...
This paper gives an overview of the REEs distribution in topsoil from Ditrău Alkaline Massif area under influence basic natural factors (parent material and soil acidity). Seventy-six samples were collected accord with most representative bedrock types concentrations elements determined using inductively coupled plasma mass spectrometry. The ΣREEs contents developed on alkaline rocks ranges 52.59 to 579.20 μg/g, average value 235.76 significantly higher than Earth's crust (179.7 μg/g). Y...
The concentration and spatial distribution of three naturally occurring radionuclides, 238U, 232Th 40K, has been determined in stream sediments from six left side tributaries Bistricioara river (Bistriței Mountains, Eastern Carpathians, Romania). Historically, several mining works were undertaken the area, with a view exploring its' potential regarding mineral resources. aim this study is to serve as reference point for future environmental monitoring, event resuming activities which...
Large platy symplectitic aggregates composed of corundum and albite appear in quartz veins crosscutting heavily retrogressed eclogites the Căpățâna Mountains, South Carpathians. They were identified as pseudomorphs after kyanite initially formed veins. Protracted circulation reactive fluids alkaline composition along produced corundum-forming breakdown kyanite. Sluggish aluminium silicate – forming reaction between enabled metastable coexistence two incompatible minerals, which nevertheless...
Summary This study describes the burial history and sedimentological aspects of Upper Jurassic limestone from southern part Western Carpathians. Several analyses propose a new view for diagenetic evolution carbonate deposits corelated to tectonic evolution. Previous studies have been focused on paleontological character this sedimentary deposits, therefore we approach that problem by sedimentolocical processes as cementation, recrystalization compactation. The area are strongly faulted...
Twenty graphite samples (amorphous and crystalline flake types of graphite) were collected from the ore storage Catalinul deposit and, 238U, 232Th, 40K naturally occurring radionuclides have been investigated by gamma-ray spectrometry. The mineral contents selected examined using a scanning electron microscope (SEM). radiological hazard parameters: radium equivalent activity (Raeq), absorbed gamma dose rates in air (DR), external index (Hex) calculated compared with international safety...
This paper gives an overview of the REEs distribution in topsoil from Ditrău Alkaline Massif area under influence basic natural factors (parent material and soil acidity). Seventy-six samples were collected accord with most representative bedrock types concentrations elements determined using inductively coupled plasma-mass spectrometry. The ΣREEs contents developed on alkaline rocks ranged 52.59 to 579.20 µg/g, average value 235.76 which was significantly higher than values Earth's crust...