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Development Of A Low-Cost Tool For The Compositional Measurement Of Gases Derived From Mineral Water Wells From The Eastern Carpathians, Szalay Roland, Kis Boglárka-Mercedesz
Development Of A Low-Cost Tool For The Compositional Measurement Of Gases Derived From Mineral Water Wells From The Eastern Carpathians, Szalay Roland, Kis Boglárka-Mercedesz
Studia UBB Geologia
The Eastern Carpathians host CO2-rich, low temperature, dry gas vents, bubbling pools and wells/drillings, which were established for the extraction of mineral water and CO2 for the bottling industry. These wells can provide important information on the structure of the geological deposits, the depths, and the source of the gases, because they are often located at important geologic/tectonic sites. Our aim was to test the applicability of a hand-made and low-cost tool in preselected wells/drillings, in order to measure the concentration of different gas species. This was challenging due to the high water and gas discharge of …
Geochemical Investigation Of Neogene Volcaniclastic Rocks From The South-Eastern Part Of The Zărand Basin (Apuseni Mts., Romania) – Implications For Locating The Source Area, Luminiţa Zaharia, Nicolae Har, Marius Vlăzan
Geochemical Investigation Of Neogene Volcaniclastic Rocks From The South-Eastern Part Of The Zărand Basin (Apuseni Mts., Romania) – Implications For Locating The Source Area, Luminiţa Zaharia, Nicolae Har, Marius Vlăzan
Studia UBB Geologia
A geochemical study of the Neogene volcaniclastic deposits from the south-eastern part of the Zărand Basin (Apuseni Mts., Romania) was performed. The investigated rocks are represented by medium-K calc-alkaline andesites. Their geochemical features are similar with those of other Neogene volcanic rocks from the Apuseni Mts. However, the investigated rocks also display a few particularities: limited variation of some major oxides and trace elements content, much lower content of Nb or of light REE. As for the other Neogene volcanic rocks from Apuseni area, the geochemical evidence supports a magma source located close to the boundary between crust and garnet-free …
Baseline Physicochemical Investigations On Waters From Three Blue Holes, San Salvador Island, Bahamas, Jacqueline Sampson, Ken Guilbeault
Baseline Physicochemical Investigations On Waters From Three Blue Holes, San Salvador Island, Bahamas, Jacqueline Sampson, Ken Guilbeault
Studia UBB Geologia
Physicochemical parameters have been studied in the water column of Inkwell, Church, and Watling’s Blue Holes (San Salvador Island, Bahamas). Water samples were collected from multiple depths at the three blue holes to identify and characterize changes of physical and chemical parameters. The values were compared to the average ocean concentrations in order to assess how connectivity to the ocean, evaporation, freshwater input, and bacterial activity influence water rock interactions. The salinity concentrations vary between the surface and ~ -4 m in each blue hole before stabilizing to rather similar values (~19.6‰). Mixing processes in the water column at Inkwell …
Evaluation Of Pgaa Data For Provenance Of Lithic Artifacts, Otis N. Crandell
Evaluation Of Pgaa Data For Provenance Of Lithic Artifacts, Otis N. Crandell
Studia UBB Geologia
The objectives of the study were to determine whether Prompt Gamma Activation Analyses (PGAA) could be successfully used to trace the source(s) of various Neolithic artifacts made of microcrystaline quartz. Two macroscopically identical sources of jasper from central and western Romania were analyzed by PGAA along with five Neolithic artifacts from the Limba site (Alba County). Due to the limited number of trace elements, which can be measured by PGAA, this method when used alone might produce inconclusive results for discriminating between jaspers from different sources. The interpretation of the data may be used for general assessments of provenance involving …
Effects Of Sediment Mineralogy To High-Iron Content In The Groundwater Of Rrogozhina Aquifer (Western Albania), Arjan Beqiraj, Enkeleida Beqiraj
Effects Of Sediment Mineralogy To High-Iron Content In The Groundwater Of Rrogozhina Aquifer (Western Albania), Arjan Beqiraj, Enkeleida Beqiraj
Studia UBB Geologia
The groundwater of Rrogozhina aquifer (western Albania) is generally characterized by high iron contents. Its water-bearing medium consists of soft to hard sandstone and conglomerate with intercalations of impermeable clay layers. The groundwater of Rrogozhina aquifer, that extends over a surface of 2100 km2 in the pre-Adriatic depression of Albania, occurs under typically artesian conditions. The iron content in ground water ranges from 0.2% up to 2.5%, but most of them fall within the interval 0.5-1.0 %. In groundwater iron occurs as reduced divalent ferrous iron (Fe+2) which is conditioned by the lack of water exposure to …
Towards Mineralogical And Geochemical Reference Groups For Some Bronze Age Ceramics From Transylvania (Romania), Volker Hoeck, Corina Ionescu, Lucretia Ghergari, Carmen Precup
Towards Mineralogical And Geochemical Reference Groups For Some Bronze Age Ceramics From Transylvania (Romania), Volker Hoeck, Corina Ionescu, Lucretia Ghergari, Carmen Precup
Studia UBB Geologia
Based on their chemical composition ceramic shards from three Bronze Age sites in Transylvania, i.e., Copăceni, Derşida and Palatca respectively, were distinguished by major, trace, and RE elements. Within the Copăceni samples, two subgroups (A and B) showing different chemistry and mineralogy were additionally separated out. The link between chemistry and mineralogy showed clearly the important contribution of the temper to the overall chemistry of the ceramic shards. In turn, the chemistry facilitated the provenance study of the raw materials, which were collected in the vicinity of the sites. In combination with the mineralogy of the ceramics, the chemical analyses …
Petrology And Geochemistry Of The Muntele Mare Granitoid (Northern Apuseni Mountains), Romania, Lucretia Ghergari, Cristina Maris
Petrology And Geochemistry Of The Muntele Mare Granitoid (Northern Apuseni Mountains), Romania, Lucretia Ghergari, Cristina Maris
Studia UBB Geologia
The paper brings new data on the petrography and geochemistry of the Muntele Mare Granitoid (MMG), from its northernmost outcropping area (Mănăstireni-Bedeci area, Gilău Massif, Apuseni Mountains), where MM\G is are actively quarried for quartz and feldspar that are used in the ceramics industry. The MMG mined in the Bedeci quarry has a pegmatitic hypidiomorphous – inequigranular fabric, and a low melanocratic index (ca. 7%). It consists of quartz, plagioclase (two generations: acidic andesine-basic oligoclase (34-35% An), and albite (9-11% An)), orthoclase ± perthite in various substitution stages by microcline (intermediary), as well as microcline maximum, muscovite and biotite. Accessories …