Article
Article name Determination of the Average Density of Rocks of the Intermediate Layer by the Method of the Least Correlation of the Gravity Anomaly with the Terrain (on the Example of Eastern Transbaikalia)
Authors Gruzdev R.. ,
Bibliographic description Gruzdev R. V. Determination of the average density of rocks of the intermediate layer by the method of the least correlation of the gravity anomaly with the terrain (on the example of Eastern Transbaikalia) // Transbaikal State University Journal. 2023. Vol. 29, no. 4 . P. 25–32. DOI: 10.2109/2227-9245-2023-29-4-25-32.
Category Earth and Environmental Sciences
DOI 55, 550.312
DOI 10.2109/2227-9245-2023-29-4-25-32
Article type Original article
Annotation Determining the density of the intermediate layer is a necessary procedure when processing and interpreting gravimetric data. According to the author, studying the relationship between rock density, relief and gravity anomalies allows us to get closer to the most accurate determination of the average density of rocks in the intermediate layer. Not only the time spent processing survey materials, but also the quality of the geological interpretation depends on the chosen technique for selecting the density of the intermediate layer. Therefore, the search for optimal algorithms for determining the average density of rocks composing the intermediate layer is of interest for gravity exploration and is a relevant direction in high-precision surveying. The object of the study is digital models of anomalies of gravity in the Bug reduction, calculated with different density of the intermediate layer. The subject of the study is the research of patterns and correlation relationships between anomalies of gravity, calculated with different density and morphology of the terrain. The purpose of the study is to clarify the average density of the intermediate layer rocks in the Buge reduction. The article considers the actual materials obtained during high-precision field gravel exploration at one of the geological exploration facilities in Eastern Transbaikalia. The procedure for processing gravimetric data when calculating the Bug anomaly at a conditional gravimetric level is described. The results of calculating gravity anomalies with different density of the intermediate layer are compared, statistics is given, and their quantitative indicators are analyzed. Digital matrices (grids) of design parameters are built. The results of the study are clearly illustrated. The level of study elaboration indicates a number of unresolved issues that are somewhat revealed by the author as a result of the calculations and analysis of digital grids, graphs and other data involved in the calculations of terrain corrections. The author has made conclusions and presented a recommendation for the use of a method for determining the average density of intermediate layer rocks.
Key words gravitational exploration, correction for intermediate layer, rock density, gravity anomalies, correlation, terrain, Nettleton method, reduction of Bouguer, digital models, modeling
Article information
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Full articleDetermination of the Average Density of Rocks of the Intermediate Layer by the Method of the Least Correlation of the Gravity Anomaly with the Terrain (on the Example of Eastern Transbaikalia)