Crustal structure beneath the Mount Cameroon region derived from recent gravity measurements |
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| Authors: | Severin Nguiya Marcelin Mouzong Pemi Alain Pierre Tokam Évariste Ngatchou Heutchi Willy Lemotio |
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| Institution: | 1. University of Douala, Faculty of Industrial Engineering, Douala, Cameroon;2. University of Buea, Higher Technical Teachers Training College, Kumba, Cameroon;3. University of Yaounde 1, Faculty of Science, Yaounde, Cameroon |
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| Abstract: | In this study, the recent update of the gravity database with new measurements has raised the opportunity of improving the knowledge of the crustal structure beneath the large volcanic system called Mount Cameroon, and its implication in the regional tectonics. The multi-scale wavelet analysis method was applied to highlight the geologic features of the area, and their depths were estimated using the logarithmic power spectrum method. The results reveal a complex crustal structure beneath Mount Cameroon with high variation in the lateral distribution of crustal densities. The upper and lower crusts are intruded by dense materials originating from the mantle with less lateral extension. The trends of Tiko and Ekona faults along the intrusion suggest tectonic activities as deep as 25 km. The difference in mantle composition or temperature between the East and the West of the studied area is clearly seen in detailed wavelet images and agrees with a mantle origin for the Cameroon Volcanic Line. |
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| Keywords: | Corresponding author Wavelet method Mount Cameroon Bouguer anomaly Seismicity |
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