CONTENTS № 12/2015 |
|
УДК 550.31 Kontarovich R.S. (Aerogeophysica) // agp@aerogeo.ru GNPP «AEROGEOPHYSICA» HAS BEEN SERVING THE NATIONAL GEOLOGY FOR 45 YEARS The history of development of the research and production company Aerogeophysica, a leading Russian company, whose specialty is to perform integrated airborne geophysical surveys of broad application, the part it played in establishing the national airborne geophysical school and the contribution it made to the growth of the raw-materials base of the country is described herein. Key words: airborne geophysical survey methods, search for deposits, the Chernobyl disaster, processing and interpretation. Р. 3-6 |
TECHNIQUE AND TECHNOLOGY OF MODERN AEROGEOPHYSICAL SHOOTINGS |
|
УДК 550.831.3, 550.838.3 Mogilevskiy V.Е. (Aerogeophysica) // volmog@list.ru Pavlov S.А. (Aerogeophysica) // pavlov@aerogeo.ru Kontarovich O.R. (Aerogeophysica) // olegk@aerogeo.ru Brovkin G.I. (Aerogeophysica) // germanbrovkin@gmail.ru FEATURES OF AEROGEOPHYSICAL SHOOTINGS IN HIGH LATITUDES Arctic region geophysical fields research is the actual problem. Airborne gravimetry and magnitometry is popular geophysics methods, often used in this study. But in north regions this surveys have hardware and technique specific features. Current article is devoted to consideration of these problems. Key words: Arctic region, airborne gravimetry, airborne magnetometry, satellite positioning, satellite altimetry. Р. 6-10 |
|
УДК 550.835.232, 550.8.052 Babayants P.S. (Aerogeophysica) // bab@aerogeo.ru Kertsman V.M. (Aerogeophysica) // kercman@aerogeo.ru Levin F.D. (Aerogeophysica) // fedorl@aerogeo.ru Trusov A.A. (Aerogeophysica) // trusov@aerogeo.ru SPECIAL FEATURES OF THE STATE-OF-THE-ART AIRBORNE GAMMA SPECTROMETRY Elements of data processing technology, the ways and means to increase survey resolution are discussed based on the analysis of the state-of-the-art airborne gamma spectrometry equipment features. The approaches based on calculating photopeak areas and the way to account for the influence of atmospheric radium are described. The examples of how to use airborne gamma spectrometry data for mapping potassium-bearing metasomatites and searching for placer deposits are given. Key words: airborne gamma spectrometry, photopeaks, radium, survey altitude, metasomatites, placer deposits. Р. 10-16 |
|
УДК 550.831.3 Mogilevskiy V.E. (Aerogeophysica) // volmog@list.ru Brovkin G.I. (Aerogeophysica) // germanbrovkin@gmaol.ru Kontarovich O.R. (Aerogeophysica) // olegk@aerogeo.ru ACHIEVEMENTS, FEATURES AND PROBLEMS OF AEROGRAVITATION MEASUREMENTS Earth gravity field studying of a board of aircraft is the innovative and very specific geophysical method. It assumes implementation in gravimetric practice of essentially new hardware and also new data collection and processing methods and ways of survey error estimation. This article is dedicated to description of these features and unsolved airborne gravimetry problems. Key words: gravity field, metrology, Kalman filtering, spatial resolution, survey error, digital gravity anomaly model. Р. 16-25 |
METHODOLOGY OF INTERPRETATION OF MODERN AEROGEOPHYSICAL DATA |
|
УДК 550.83, 550.8.052 Babayants P.S. (Aerogeophysica) // bab@aerogeo.ru AIRBORNE GEOPHYSICAL TECHNOLOGIES ARE THE EFFICIENT MEANS FOR OPTIMIZING GEOLOGYCAL EXPLORATION After analyzing special features and advantages of the state-of-the-art airborne geophysical technologies, their efficiency for performing a wide range of tasks for middle scale geological mapping, search for hydrocarbon and solid mineral deposits was demonstrated. Airborne geophysical technologies are efficient means to optimize geological exploration through reducing the amount of time spent on prospecting the territory and on exact positioning of cost- intensive seismic and rock drilling works, which makes them even more relevant in a down economy. Key words: airborne geophysical methods, interpretation, mapping, search for hydrocarbon and solid mineral deposits. Р. 25-33 |
|
УДК 551.243.550.8.05.551.243 Kalmykov B.A. (Aerogeophysica) // kalmykov@aerogeo.ru Trusov A.A. (Aerogeophysica) // trusov@aerogeo.ru THE POSSIBILITIES TO DISCOVER ORE CONTROLLING STRUCTURES WITH THE HELP OF AIRBORNE ELECTROMAGNETIC SURVEY DATA The abilities and resolution power of electromagnetic survey for the purposes of geological mapping were estimated. The examples of main types of ore controlling structures found in electromagnetic survey data were given: disjunctive, block, fold. These examples show the efficiency of frequency electromagnetic survey to solve the problems of structural mapping. There were some suggestions to use electromagnetic survey, which is based on variable fields, to locate prospective areas within the identified ore controlling areas. Key words: electromagnetic survey data, mapping, ore controlling structures, search for ore deposits. Р. 33-37 |
|
УДК 551.4.075.550.3 Ageev S.N. (Aerogeophysica) // 7777@inbox.ru Levin F.D. (Aerogeophysica) // fedorl@aerogeo.ru THE POSSIBILITIES OF AIRBORNE MAGNETIC SURVEY WHEN MAPPING ANCIENT RIVER AND SHORELINE SEDIMENTS In 2008-2011 when GNPP «Aerogeophysica» was performing airborne magnetic survey on the territory of Southern Federal District, some magnetic anomalies related to alluvium of the middle Miocene paleochannels. Three paleovalleys of different ages superposed by the Pliocene alluvium and not visible in the geometry, as well as river sediments at watershed, were mapped with the help of the data. The former coincide with the territories which underwent sinking at neotectonic stage, and the latter underwent lifting. Low intensity linear local anomalies which resulted either from orebody of U-P-TR formation oxidation in the areas of disjunctive dislocations, or are related to the initial concentrations of magnetic minerals in coastal Late Oligocene bar resembling shoals, were also discovered. Key words: aerogeophysica, airborne magnetic survey, magnetic field, paleovalley. Р. 37-42 |
|
УДК 550.3 Levin F.D. (Aerogeophysica) // fedorl@aerogeo.ru CLARIFICATI ON OF THE AGE AND PETROCHEMICAL PROPERTIES OF GRANITOIDS WITH THE HELP OF AIRBORNE MAGNETIC SURVEY DATA Comparing the data received through the airborne magnetic survey performed by GNPP «Aerogeophysica» in the estuary part of the Amgun river with the prior geological data allowed to single out from the Late Cretaceous low Amur intrusive complex those rocks which correspond in their petrochemical properties with the formations of the Early Cretaceous Khungariyskiy intrusive complex. Key words: airborne survey, airborne magnetic survey, magnetic field, granitoids. Р. 42-45 |
GEOLOGICAL RESULTS |
|
УДК 550.8.05.551.22 Bush W.A. (Aerogeophysica) // bush@aerogeo.ru Kalmykov B.A. (Aerogeophysica) // kalmykov@aerogeo.ru SPECIAL FEATURES OF HOPERSKIY DYKE BELT (VORONEZH ANTECLISE) FORMATION ACCORDING TO AIRBORNE GEOPHYSICAL DATA The structure of the Late Devonian Hoperskiy dyke belt at the eastern margin of Voronezh anteclise is described with the help of the airborne geophysical survey data. Some dolerite dykes, central type basite intrusions, assumed sills and blow holes were discovered there. Hoperskiy dyke belt was traced over a significant distance to the south and east, a lot of special features of its structure were revealed, they were those features that had been missed by the previously conducted research. Some similarities with the structure of Viluysko-Markhinskiy diamond-bearing dyke belt of the same age, which was discovered in Yakutiya, are adduced. The question of a feasible presence of kimberlite magnetism and possible diamond content in Hoperskiy dyke belt is raised. Key words: magnetic anomalies, Hoperskiy dyke belt, the Middle Paleozoic basite dykes, Viluysko-Markhinskiy dyke belt, kimberlite holes, disjunctive dislocations. Р. 46-50 |
|
УДК 550.3 Bush W.A. (Aerogeophysica) // bush@aerogeo.ru Levin F.D. (Aerogeophysica) // fedorl@aerogeo.ru INTRAPLATE MAGMATISM OF THE SOUTHERN PART OF THE SIBERIAN CRATON GNPP «Aerogeophysica» performed a number of airborne surveys in the southern part of the Siberian craton in 2006-2009. The framework of trappean and dike complexes of different ages was clarified. The most ancient, Riphean, is a series of sills and dikes of dolerites and quartz gabbro-dolerite at the south-eastern edge of the Baikal-Patomskiy fold system. A trappean complex was formed on the southern side of the Kempendyaiskaya depression in Devonian Period, the complex is represented by volcanogenic and intrusive formations. New data revealing the structure of Triassic traprock in the south of the Tunguska syneclise was received. Four stages of magnetism were identified. Volcano-tectonic depressions and paleo-volcanic structures of central type were discovered. A connection was established between intraplate magmatism occurrences and rift structures. Key words: aerogeophysica, intraplate magmatism, trappean, dikes, magnetic field. Р. 51-57 |
|
УДК 550.8.05.551.22 Kalmykov B.A. (Aerogeophysica) // kalmykov@aerogeo.ru Trusov A.A. (Aerogeophysica) // trusov@aerogeo.ru SPECIAL FEATURES OF INTERNAL STRUCTURE OF PALEOZOIC COMPLEXES OF SHUCHENSKIY SYNCLINORIUM IN POLAR URALS WITH THE HELP OF AIRBORNE GEOPHYSICAL DATA The particularities of internal structure of Paleozoic complexes of Shuchenskiy synclinorium with the help of airborne geophysical data are described. The most vivid manifestation of internal structure of the complexes can be seen in magnetic field transformants. Internal structure of gabbroid massives of Kharameysko-Maslovskiy complex shows the brightest manifestation in a magnetic field as an alternation of concentric local anomalies. Titanium magnetite ores are confined to these massives. Volcanogenic sedimentary-exhalative deposits are manifested through alternations of linear local magnetic anomalies. Key words: Paleozoic complexes, faults, intrusive massives, chromites, iron ore, Shuchenskiy synclinorium. Р. 57-64 |
|
УДК 551.241.550.312 Ageev S.N. (Aerogeophysica) // ageevsn@aerogeo.ru Levin F.D. (Aerogeophysica) // fedorl@aerogeo.ru THE ELEMENTS OF DEEP STRUCTURE OF THE SOUTHERN PART OF THE EAST-EUROPEAN PLATFORM ACCORDING TO AIRBORNE GRAVITY DATA The gravity field in the Southern part of the East European platform is complicated by the influence of deep horizons. The results of modeling show that besides density contrast «crust-mantle», the crust-mantle transition zone (CM layer) also influences gravity field structure greatly. Mapping of top and thickness of crust-mantle layer has been done with the help of correlation technique of airborne geophysical data interpretation. Key words: airborne gravimetry, the Moho discontinuity, crust-mantle layer, correlation technique of interpretation. Р. 64-67 |
|
УДК 550.83:550.8.052 Sklovskiy S.A. (Geology-Geophysical Company) // sklov@aerogeo.ru Panarin A.A. (Geology-Geophysical Company) // obizor@gmail.com REMOTE DIAGNOSTICS OF PIPELINES BY THERMAL INFRARED AIRBORNE SURVEYS DATA Thermal infrared airborne survey allows you to solve some of targets for mapping and monitoring natural and technological objects. The first one is the mapping of pipelines, primarily thermal networks, the most relevant for urban areas, for which thermal infrared survey allows you to make large-scale schemes of thermal networks with their remote diagnostics to quickly identify dangerous and damaged sections of thermal networks. All received data are integrated into the target and municipal geoinformational systems. Key words: thermal, infrared, survey, networks, remote, diagnostic, mapping, monitoring, geoinformational Р. 67-70 |