Lithologic and structural mapping of the Abiete–Toko gold district in southern Cameroon, using Landsat 7 ETM+/SRTM
| Autor: | Lucien Bitom Dieudonné, Agbor Taku, Thierry Bineli Betsi, Eugene Pascal Binam Mandeng, Lionel Tchami Nfada, Antoinette Solange Ipan, Louise Marie Bondjè Bidjeck, Jonas Didero Takodjou Wambo |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Global and Planetary Change
Gold mining 010504 meteorology & atmospheric sciences Lithology business.industry Geochemistry Shuttle Radar Topography Mission 010502 geochemistry & geophysics 01 natural sciences Lineation Sinistral and dextral Prospection Principal component analysis General Earth and Planetary Sciences Shear zone business Geology 0105 earth and related environmental sciences |
| Zdroj: | Comptes Rendus Geoscience. 350:130-140 |
| ISSN: | 1631-0713 |
| DOI: | 10.1016/j.crte.2017.11.003 |
| Popis: | The geology of the Abiete–Toko gold district in South Cameroon is investigated using a combination of Landsat 7 ETM+/SRTM image processing techniques, conventional geologic field mapping and geostatistical analysis. The satellite images were treated using Principal Component Analysis and Sobel filters to separate the background noise from lithotectonic structures which were matched with field data. The results show that this area has been affected by a polyphase deformation represented by S 1 foliation, S c1 schistosity, L 1 lineation, S 2 foliation, F 2 folds, and F 3 shear zones and faults. A detailed analysis of all the structures led to the identification of two major networks of dextral and sinistral shear zones oriented WNW–ESE and NE–SW, respectively. These results may serve in mining prospection, especially in the search for tectonically controlled primary mineralization and so may significantly guide the exploration of primary gold mineralization in the Abiete–Toko area subjected to years of artisanal gold mining. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|