Lesic V.,Republic Geodetic Authority |
Marton E.,Geological and Geophysical Institute of Hungary |
Cvetkov V.,University of Belgrade |
Tomic D.,Republic Geodetic Authority
Geophysical Journal International | Year: 2013
The Vardar zone is the suture between colliding Adriatic and Eurasian plates, comprising profoundly different tectonostratigraphic units which came into contact during Early Palaeogene. The zone was subsequently intruded by igneous rocks, concentrated at certain places, like the Kopaonik area,where plutonic and extrusive igneous rocks are in abundance. The largest I-type plutons (Kopaonik, Drenje and Željin) form the central part of an N-S running anticline, with an undulating and northward sinking axis. The anticline is conceived as having been formed during compression (D3 phase of deformation of post-Cretaceous age), prior to the intrusion of I-type granitoids or alternatively, the updoming of the regionally metamorphosed rocks was caused by the intrusion of the plutons. The granitoids, forming the core of the anticline and the satellite bodies intruded during Oligocene (at the depth of 10 km), but were exhumed during a mid-Miocene extensional D4 phase of deformation, simultaneously with the intrusion of S-type granite which crops out NW of the anticline. Dacitoandesites, mostly situated west of the anticline, are considered as of Oligocene age, but older than the plutonic rocks. The Miocene granite has visible foliation, the I-type granodiorites and the dacitoandesites occasionally exhibit visibly oriented mineral fabric. In such cases, the fast and inexpensive magnetic susceptibility measurements can provide information about the degree and type of the orientation of the fabric. Our aim was to find out if the loosely dated D3 and the welldated D4 deformations left imprint in the magnetic fabrics of the above-mentioned rocks by studying the magnetic susceptibility anisotropy of nearly 300 independently oriented samples from 25 localities. We found that the granodiorites often have high or extremely high degree of magnetic anisotropy, suggesting that it was acquired under the influence of stress in the last stage of solidification. In the main body of the Kopaonik and Željin plutons and in the satellite body of Dubovo anisotropy of magnetic susceptibility (AMS) ellipsoids can be related to the N-S running Kopaonik- Željin anticline. In the northern part of the Kopaonik pluton, and in the Drenje massif the pattern of the schistosity planes do not fit to the anticlinorium, neither seem to satisfy an onion-shell model put forward earlier for the Kopaonik pluton. On the contrary, the orientations of the AMS ellipsoids are consistent with those for the Drenje mass (not included in the 'onion-shell' structure) and they are probably related to regional extension. AMS fabric of the Kremíci satellite body (W of the Kopaonik pluton) and that of the Miocene S-type granite is also interpreted as to reflect Miocene extension. Thus, we suggest that at certain places the magnetic fabric of the I-type intrusions was 'frozen in' during compressional deformation (D3). The magnetic fabric of the northern part of the Kopaonik pluton, the Drenje mass, the Kremíci body must have been still deformable during D4 (ductile) phase, when the Polumir granite was emplaced. The magnetic fabrics of the dacitoandesites did not reflect deformation. The reason may be that they cooled completely before the intrusion of the I-type granodiorites. © The Authors 2013. Published by Oxford University Press on behalf of The Royal Astronomical Society.
Todorovic D.,University of Belgrade |
Markovic T.,University of Belgrade |
Prolic Z.,University of Belgrade |
Mihajlovic S.,Republic Geodetic Authority |
And 3 more authors.
International Journal of Radiation Biology | Year: 2013
Purpose: There is considerable concern about potential effects associated with exposure to magnetic fields on organisms. Therefore, duration of pupa-adult development and motor behaviour of adults were analyzed in Tenebrio obscursus and T. molitor after exposure to static magnetic field (50 mT). Material and methods: The experimental groups were: Control (kept 5 m from the magnets), groups which pupae and adults were placed closer to the North pole, or closer to the South pole of magnetic dipole. The pupae were exposed to the magnetic field until the moment of adult eclosion. The pupa-adult development dynamics were recorded daily. Subsequently, behaviour (distance travelled, average speed and immobility) of adults exposed to the magnetic field was monitored in a circular open field arena. Results: Static magnetic field did not affect pupa-adult developmental dynamic of examined Tenebrio species. Exposure to magnetic field did not significantly change motor behaviour of T. obscurus adults. The changes in the motor behaviour of T. molitor induced by static magnetic field were opposite in two experimental groups developed closer to the North pole or closer to the South pole of magnetic dipole. Conclusion: Static magnetic field (50 mT) did not affect on pupa-adult development dynamic of two examined Tenebrio species, but modulated their motor behaviour. © 2013 Informa UK, Ltd.
Cvijetinovic Z.,University of Belgrade |
Avramovic M.,Republic Geodetic Authority |
Mihajlovic D.,University of Belgrade
Survey Review | Year: 2015
The subject of the research is the methodology for the successful production of the digital cadastral map (DCM) database in a new spatial reference system (SRS) of Serbia. The DCM is treated as the basis for establishment of the coordinate based cadastre (CBC) in Serbia. The research is focused on the following: the status of the state survey data especially regarding analogue cadastral maps and state geodetic reference network, production of DCM database, the introduction of a new spatial reference system, and legislation covering this field in Serbia. The existing geodetic/surveying network for cadastral/topographic survey and analogue cadastral maps are analysed in terms of their quality. The research also covers an analysis of present methods and procedures for DCM production using data obtained from various sources. Coordinate differences for DCM points and differences between areas of polygon features obtained using original survey data and those obtained by digitising scanned cadastral maps are analysed. The procedure of legislating information letters and resolutions on changes of areas within the DCM production procedure and the impact of the transition from the Gauss–Kru¨ger to the UTM projection on areas for DCM polygon features are also analysed. © 2015 Survey Review Ltd.
Brankovic S.,Republic Geodetic Authority |
Parezanovic L.,Republic Geodetic Authority |
Simovic D.,Republic Geodetic Authority
Geodetski Vestnik | Year: 2015
Agricultural land is an important resource for the society, where many interest for land use meet. Preservation of the agricultural land and its improvement, different functions, spatial exposition as well as land plot structure are regulated by different laws. Unfavourable land plot structure is often considered as a problem for suitable management of agricultural land. An important approach to solving this problem is the land rearrangement tool called land consolidation. Agricultural land rearrangement within the land consolidation procedure includes agricultural land appraisal, which is the most delicate and the most demanding part of land consolidation works. The present paper provides an overview of a standard land appraisal methodology implemented in the land consolidation procedure in Serbia, with an additional overview of the possibility to use different geo-data sources and spatial data analyses for valuating agricultural land during the land consolidation process. © 2015 Zvava Geodetov Slovenije. All rights reserved.