USE OF DIGITAL PHOTOGRAPHIC METHOD FOR THE CREATION OF VIRTUAL GEOLOGICAL OUTCROPS, CASE STUDIES ON THE CLASTIC DIKES FROM WESTERN UKRAINE

Abstract

The aim of the work is to demonstrate the usefulness of digital photogrammetry for the purposes of Structural Geology. The studied object clastic dikes in the Oligocene deposits of the Ukrainian Carpathians, which are localized in the village of Stankovtsi of the Dolyna District of Ivano-Frankivsk Region. They are important indicators of the geodynamic conditions in different tectonic conditions. Method. For this object digital photogrammetry was first used for the construction of a three-dimensional outcrop. The workflow for collecting, processing and presenting the 3D model is presented. For the first time digital photogrammetry was used for the construction of a three-dimensional outcrops. To create the model, the Sony Alpha 7 digital camera, the Leica TCR405 electronic station and the South Galaxy G1 GNSS receiver were used. Field scan results were processed using Agisoft Photoscan software. Results. There are described advantages and disadvantages of digital photogrammetric data for the purposes of Structural Geology. The advantages of using digital photogrammetry are the high performance of the surveying and their high precision. The disadvantages include the lack of a sufficient number of specialists working in the field of digital photogrammetry. Practical significance. The created model will be used for visualization of the structural features of the outcrops, subsequent construction with the use of various computer programs. First and foremost, these include Move and CloudCompare, which allow receiving a large amount of information necessary for a structural geologist in an office. Such data include: the thickness of the layers, both plane and linear elements.