5 research outputs found
Gold in streams of the southern slopes of the Slavonian Mountains : master's thesis
U svrhu odreÄivanja koncentracije zlata u potocima južnih obronaka slavonskih planina (Papuka i Krndije) uzorkovani su vodotoÄni sedimenti. Drenažni teren sastoji se od razliÄitih litostratigrafskih jedinica od kojih su najvažnije: Ggs, Scose, D3, C,P, 2PT, T2 i 1M12. Od 12 uzoraka, na temelju granulometrije, 7 uzoraka pripada kategoriji Å”ljunka, a 5 uzoraka kategoriji pijeska. Iz granulometrijske krivulje izraÄunati su matematiÄki parametri: srednja veliÄina zrna, sortiranost i koeficijent asimetrije. OdreÄivanjem mineralnog sastava teÅ”ke mineralne frakcije te magnetiÄne i nemagnetiÄne frakcije odreÄene su primarne stijene uzorkovanih sedimenata - paleozojske metamorfne stijene. OptiÄkim istraživanjima utvrÄeno je da u uzorcima prevladavaju litiÄni fragmenti, a razlike u mineralnom sastavu uoÄljive su u promjenama glavnih i sporednih minerala (Qtz, Chl, Cdl, Gr, tinjaca). Vidljivo zlato nije pronaÄeno unutar Å”lihova i 5 uzoraka s najveÄim sadržajem Fe minerala, posebica pirita koji mogu biti zlatonosni, poslano je na daljnje analize. Otapanjem u zlatotopci, uzorci su pripremljeni za atomsku apsorpcijsku spektrometriju (AAS). Koncentracija zlata u uzorcima je ispod granice detekcije (< 20 ppb) U sklopu rada, za potrebe geoparka Papuk napravljene su geoloÅ”ke radionice za djecu od 6-14 godina (S0 i S1 uzrast).Abstract: In order to determine the concentration of gold in the streams of the southern slopes of the Slavonian Mountains (Papuk and Krndija) aquferius were sampled. Drain field consists of different lithostratigraphic units of which are the most important: Ggs, Scose, D3, C,P, 2PT, T2 and 1M12.Of 12 samples, based on grain size, 7 samples belong to the category of gravel and 5 samples belong to the category of sands. From the granulometric curve it was calculated the mathematical parameters: mean grain size, sorted and coefficient of asymmetry. By specifying the mineral composition of the heavy mineral fraction and the magnetic and nonmagnetic fractions the preacursor rocks were determinated as Paleozoik metamorphic rocks. Optical research has shown that in the samples prevail the lithic fragments, and the differences in mineral composition are noticeable changes in the major and minor minerals (quartz, Chl, Cdl, Gr, mica). Visible gold is not found within heavy mineral fraction and 5 samples with the highest content of Fe-bearing minerals, particularly pyrite (which may occure as gold-bearing), were sent for further analysis. By dissolution in aqua regia samples were prepared for Atomic Absorption Spectroscopy (AAS), which establishe that within sample gold is below detection limits. Also, geological workshops for childrens from 6-14 years (S0 and S1 age) for the geopark Papuk are made as part of these theses
Gold in streams of the southern slopes of the Slavonian Mountains : master's thesis
U svrhu odreÄivanja koncentracije zlata u potocima južnih obronaka slavonskih planina (Papuka i Krndije) uzorkovani su vodotoÄni sedimenti. Drenažni teren sastoji se od razliÄitih litostratigrafskih jedinica od kojih su najvažnije: Ggs, Scose, D3, C,P, 2PT, T2 i 1M12. Od 12 uzoraka, na temelju granulometrije, 7 uzoraka pripada kategoriji Å”ljunka, a 5 uzoraka kategoriji pijeska. Iz granulometrijske krivulje izraÄunati su matematiÄki parametri: srednja veliÄina zrna, sortiranost i koeficijent asimetrije. OdreÄivanjem mineralnog sastava teÅ”ke mineralne frakcije te magnetiÄne i nemagnetiÄne frakcije odreÄene su primarne stijene uzorkovanih sedimenata - paleozojske metamorfne stijene. OptiÄkim istraživanjima utvrÄeno je da u uzorcima prevladavaju litiÄni fragmenti, a razlike u mineralnom sastavu uoÄljive su u promjenama glavnih i sporednih minerala (Qtz, Chl, Cdl, Gr, tinjaca). Vidljivo zlato nije pronaÄeno unutar Å”lihova i 5 uzoraka s najveÄim sadržajem Fe minerala, posebica pirita koji mogu biti zlatonosni, poslano je na daljnje analize. Otapanjem u zlatotopci, uzorci su pripremljeni za atomsku apsorpcijsku spektrometriju (AAS). Koncentracija zlata u uzorcima je ispod granice detekcije (< 20 ppb) U sklopu rada, za potrebe geoparka Papuk napravljene su geoloÅ”ke radionice za djecu od 6-14 godina (S0 i S1 uzrast).Abstract: In order to determine the concentration of gold in the streams of the southern slopes of the Slavonian Mountains (Papuk and Krndija) aquferius were sampled. Drain field consists of different lithostratigraphic units of which are the most important: Ggs, Scose, D3, C,P, 2PT, T2 and 1M12.Of 12 samples, based on grain size, 7 samples belong to the category of gravel and 5 samples belong to the category of sands. From the granulometric curve it was calculated the mathematical parameters: mean grain size, sorted and coefficient of asymmetry. By specifying the mineral composition of the heavy mineral fraction and the magnetic and nonmagnetic fractions the preacursor rocks were determinated as Paleozoik metamorphic rocks. Optical research has shown that in the samples prevail the lithic fragments, and the differences in mineral composition are noticeable changes in the major and minor minerals (quartz, Chl, Cdl, Gr, mica). Visible gold is not found within heavy mineral fraction and 5 samples with the highest content of Fe-bearing minerals, particularly pyrite (which may occure as gold-bearing), were sent for further analysis. By dissolution in aqua regia samples were prepared for Atomic Absorption Spectroscopy (AAS), which establishe that within sample gold is below detection limits. Also, geological workshops for childrens from 6-14 years (S0 and S1 age) for the geopark Papuk are made as part of these theses
Gold in streams of the southern slopes of the Slavonian Mountains : master's thesis
U svrhu odreÄivanja koncentracije zlata u potocima južnih obronaka slavonskih planina (Papuka i Krndije) uzorkovani su vodotoÄni sedimenti. Drenažni teren sastoji se od razliÄitih litostratigrafskih jedinica od kojih su najvažnije: Ggs, Scose, D3, C,P, 2PT, T2 i 1M12. Od 12 uzoraka, na temelju granulometrije, 7 uzoraka pripada kategoriji Å”ljunka, a 5 uzoraka kategoriji pijeska. Iz granulometrijske krivulje izraÄunati su matematiÄki parametri: srednja veliÄina zrna, sortiranost i koeficijent asimetrije. OdreÄivanjem mineralnog sastava teÅ”ke mineralne frakcije te magnetiÄne i nemagnetiÄne frakcije odreÄene su primarne stijene uzorkovanih sedimenata - paleozojske metamorfne stijene. OptiÄkim istraživanjima utvrÄeno je da u uzorcima prevladavaju litiÄni fragmenti, a razlike u mineralnom sastavu uoÄljive su u promjenama glavnih i sporednih minerala (Qtz, Chl, Cdl, Gr, tinjaca). Vidljivo zlato nije pronaÄeno unutar Å”lihova i 5 uzoraka s najveÄim sadržajem Fe minerala, posebica pirita koji mogu biti zlatonosni, poslano je na daljnje analize. Otapanjem u zlatotopci, uzorci su pripremljeni za atomsku apsorpcijsku spektrometriju (AAS). Koncentracija zlata u uzorcima je ispod granice detekcije (< 20 ppb) U sklopu rada, za potrebe geoparka Papuk napravljene su geoloÅ”ke radionice za djecu od 6-14 godina (S0 i S1 uzrast).Abstract: In order to determine the concentration of gold in the streams of the southern slopes of the Slavonian Mountains (Papuk and Krndija) aquferius were sampled. Drain field consists of different lithostratigraphic units of which are the most important: Ggs, Scose, D3, C,P, 2PT, T2 and 1M12.Of 12 samples, based on grain size, 7 samples belong to the category of gravel and 5 samples belong to the category of sands. From the granulometric curve it was calculated the mathematical parameters: mean grain size, sorted and coefficient of asymmetry. By specifying the mineral composition of the heavy mineral fraction and the magnetic and nonmagnetic fractions the preacursor rocks were determinated as Paleozoik metamorphic rocks. Optical research has shown that in the samples prevail the lithic fragments, and the differences in mineral composition are noticeable changes in the major and minor minerals (quartz, Chl, Cdl, Gr, mica). Visible gold is not found within heavy mineral fraction and 5 samples with the highest content of Fe-bearing minerals, particularly pyrite (which may occure as gold-bearing), were sent for further analysis. By dissolution in aqua regia samples were prepared for Atomic Absorption Spectroscopy (AAS), which establishe that within sample gold is below detection limits. Also, geological workshops for childrens from 6-14 years (S0 and S1 age) for the geopark Papuk are made as part of these theses
Remapping of depth of e-log markers between Neogene basement and Lower/Upper Pannonian border in the Bjelovar Subdepression
<p>Within the Croatian part of the Pannonian Basin System, there are several depressions and subdepressions. A geostatistical analysis was performed in the Bjelovar Subdepression, which is part of the larger Drava Depression. Data for the analysis were obtained from structural maps of the subdepression, previously made by hand interpolation. Square grid cells (2āĆā2ā
km) were laid over the maps. The analysis of cell data included a sufficient number of data (>700 per map) and the semivariogram analyses after which experimental and theoretical semivariograms were made. Consequently a new map set was interpolated by the Ordinary Kriging technique including the pre-Neogene palaeorelief border (āTgā) and e-log markers (āRs7ā and āRs5ā). New maps were subsequently compared with the older, hand-interpolated maps. It was shown that the method of transferring non-computer into computer interpolated maps via/using an artificial, regular grid of point data is an effective way of ādigitizingā older paper-based maps, preserving almost all of the regional information.</p