Integration of Remote Sensing and Field Data in Ophiolite Investigations: A Case Study of Logar Ophiolite Complex, SE Afghanistan
Yousufi A. Ahmadi H. Bekbotayeva A. Arshamov Y. Baisalova A. Omarova G. Pekkan E.
February 2023MDPI
Minerals
2023#13Issue 2
Mafic–ultramafics complexes are crucial for their tectonic implication, upper mantle condition, and for hosting industrial minerals in a region. This study aims to highlight and characterize the mafic–ultramafic rocks of the Logar Ophiolite Complex using the integration of geospatial technology and field data. The spatial distribution of the ophiolitic complex was examined in this study using the mineralogical indices (MI), band ratio (BR), and spectral angle mapper (SAM) methods within the framework of geospatial technology using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data. Additionally, several samples were collected from the identified complexes for validation, petrographic, and mineralogical analyses. Combining geospatial technology and conventional approaches, e.g., field sampling and geological data analysis yields efficient discrimination of mafic–ultramafic rocks with their associated hydrothermal altered minerals. The serpentinization and carbonate processes are predominantly seen along the eastern side of the active fault zone following the detection of ophiolites. Detailed mapping of the ophiolitic complex and associated rocks was achieved using refined mafic index (MI), band ratio 12/14 and 4/8 for rocks and SAM for highlighting the mafic–ultramafic altered minerals, and petrographic analysis of the collected samples. The field works verified the results of the ASTER data. The findings of this study can significantly contribute to detailed tectonic and geologic studies of the detected ophiolites in terms of their emplacement mechanism and ages.
ASTER , geospatial , mafic , mineralogy , ophiolite , ultramafic
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Department of Geology and Exploration of Mineral Deposits, Institute of Geology and Oil Gas Engineering, Satbayev University, Almaty, 050013, Kazakhstan
Department of Geological Engineering and Exploration of Mines, Faculty of Geology and Mines, Kabul Polytechnic University, Kabul, 1001, Afghanistan
Department of Remote Sensing and Geographic Information Systems, Graduate School of Sciences, Eskisehir Technical University, Eskisehir, 26000, Turkey
Institute of Earth and Space Sciences, Eskisehir Technical University, Eskisehir, 26000, Turkey
Department of Geology and Exploration of Mineral Deposits
Department of Geological Engineering and Exploration of Mines
Department of Remote Sensing and Geographic Information Systems
Institute of Earth and Space Sciences
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