Interpretation of gravity data derived from the Earth Gravitational Model EGM2008 in the Center-North Cameroon: structural and mining implications

Essi, Jean Marcel Abaté; Margat, Jean; Atangana, Joseph Quentin Yene; Ahmad, Ahmad Diab; Dassou, Elisabeth Fita; Mbossi, Eddy Ferdinand; Ondoa, Joseph Mvondo; Pénaye, Joseph

doi:10.1007/s12517-017-2919-y

Cited by 23 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4). Significant similarities are found by Eyike et al (2010) and Abate Essi et al (2017) after comparing terrestrial gravity and EGM2008 data for Cameroon. Likewise, Marcel et al (2016) investigated the Moho discontinuity depth along the CVL with EGM2008 data and found results in conformity with previous studies which used terrestrial gravity and seismic data.…”

Section: Datamentioning

confidence: 72%

“…Therefore, in order to study the subsurface features, residual anomalies will be described since they provide the heterogeneity of geological Fig. 4 Bouguer anomaly map derived from EGM2008 of the study area (modified from Marcel et al 2016) formations, characterized by density variations inside the terrestrial crust (Abate Essi et al 2017). The residual anomaly map (Fig.…”

Section: Residual Anomaliesmentioning

confidence: 99%

“…This operation accentuates the effect of deep gravity sources and attenuates or even removes the influence of the superficial ones (Jacobsen 1987;Marcel et al 2016;Abate Essi et al 2017). Hence, this low passed filter transforms and smooths gradually the initial uneven Bouguer anomalies (Fig.…”

Section: Upward Continuation For Regional Structurementioning

confidence: 99%

“…For example, Noutchogwe (2010) presented a close correlation between the lineaments inferred from magnetic anomalies, the sites of thermo-mineral springs and the hydrographical network in Adamawa Cameroon. Using gravity data, Jaffal et al (2010), Fan et al (2014) and Abate Essi et al (2017) showed the importance of geophysical lineaments in studying ore bodies and mineralized areas. Therefore, geophysical investigation is helpful to delineate outcropped or buried faults.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Validation of gravity data from the geopotential field model for subsurface investigation of the Cameroon Volcanic Line (Western Africa)

Margat

Essi

Nouck

et al. 2018

Earth Planets Space

Self Cite

View full text Add to dashboard Cite

Belonging to the Cameroon Volcanic Line (CVL), the western part of Cameroon is an active volcanic zone with volcanic eruptions and deadly gas emissions. The volcanic flows generally cover areas and bury structural features like faults. Terrestrial gravity surveys can hardly cover entirely this mountainous area due to difficult accessibility. The present work aims to evaluate gravity data derived from the geopotential field model, EGM2008 to investigate the subsurface of the CVL. The methodology involves upward continuation, horizontal gradient, maxima of horizontal gradient-upward continuation combination and Euler deconvolution techniques. The lineaments map inferred from this geopotential field model confirms several known lineaments and reveals new ones covered by lava flows. The known lineaments are interpreted as faults or geological contacts such as the Foumban fault and the Pan-African Belt-Congo craton contact. The lineaments highlighted coupled with the numerous maar lakes identified in this volcanic sector attest of the vulnerability of the CVL where special attention should be given for geohazard prevention.

show abstract

Section: Datamentioning

confidence: 72%

Section: Residual Anomaliesmentioning

confidence: 99%

Section: Upward Continuation For Regional Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Validation of gravity data from the geopotential field model for subsurface investigation of the Cameroon Volcanic Line (Western Africa)

Margat

Essi

Nouck

et al. 2018

Earth Planets Space

Self Cite

View full text Add to dashboard Cite

show abstract

“…The analysis of lineaments represents an important step in geological survey. Several works interpret geophysical lineaments as faults or geological contacts (Atawa et al, 2018) or targets for mineralization emplacement (Abate Essi et al, 2017). The study area is characterized by tectonic features such as folds, faults and important undulations illustrated by previous geological works (Gazel & Gerard, 1954;Toteu et al, 2004;Ngako et al, 2008).…”

Section: Introductionmentioning

confidence: 95%

Interpretation of Aeromagnetic Data to Investigate Crustal Structures of the Contact Congo Craton - Pan-African Belt at the Eastern Cameroon

Amougou¹,

Mbarga²,

Meying³

et al. 2020

ESR

Self Cite

View full text Add to dashboard Cite

The collision between the Congo Craton and the Pan African fold belt of Central Africa had great impacts on the geological and tectonic points of view, notably the installation of several tectonic accidents such as faults, fractures, dikes, folds, domes. This aeromagnetic study is based on Paterson's aeromagnetic data interpretations through the use of multiple operators. These data were processed by Oasis Montaj software. The total magnetic intensity map reduced to the equator (RTE-TMI) shows important anomalies features the major important regional anomalies. Maps of the vertical gradient, analytical signal and tilt angle maps have meanwhile highlighted several short wavelength anomalies assimilated to folding, dykes, fractures or faults. The map of maxima upward to 2 km allowed to establish the structural map of the study area. It turns out that the different types of geological accidents follow ENE-WSW, ESE-WNW, NE-SW, NW-SE and even E-W and N-S directions. All these directions are very similar to the geological history of the area. Anything that seems to confirm that the study area was the scene of intense tectonic movements resulting from the collision between the Congo Craton and the Central Africa Fold Belt.

show abstract

Delineating structural features of North Cameroon using the EIGEN6C4 high‐resolution global gravitational model

Ghomsi

Pham²,

Steffen

et al. 2022

Geological Journal

View full text Add to dashboard Cite

The Cretaceous basins of the West and Central African Rift System (WCARS) are characterized by sinistral strike-slip movements observed between the Benue and Arabian-Nubian microplates. These basins share a similar basin-filling structure, history, and tectonic processes. They have attracted a significant interest in the study of their geodynamics and subsurface structure through geophysical exploration methods. Nevertheless, North Cameroon located in this microplate confluence has not yet been investigated in terms of identifying geological structures, such as lineaments and faults. To contribute to a better understanding of the northern Cameroon structural framework and its tectonic context, we investigate the lineaments in northern Cameroon by using the EIGEN-6C4 gravitational model and a variety of recent processing techniques (Tilt derivative [TDR], Theta Map [TM], Horizontal tilt angle [TDX], and Edge Detector [ED]). Our results show that the lineaments are trending in ENE-WSW, NW-SE, NE-SW, and WNW-ESE directions. These directions are consistent with the Cretaceous Garoua Rift and granitoids of the Cameroon-Chad line. The presented result clearly delineates continuous architectonic features of the structural edges of the Saharan Metacraton, the Cretaceous Garoua Rift, the Bibemi-Léré granitoids, and the Adamawa faults.

show abstract

Interpretation of gravity data derived from the Earth Gravitational Model EGM2008 in the Center-North Cameroon: structural and mining implications

Cited by 23 publications

References 23 publications

Validation of gravity data from the geopotential field model for subsurface investigation of the Cameroon Volcanic Line (Western Africa)

Validation of gravity data from the geopotential field model for subsurface investigation of the Cameroon Volcanic Line (Western Africa)

Interpretation of Aeromagnetic Data to Investigate Crustal Structures of the Contact Congo Craton - Pan-African Belt at the Eastern Cameroon

Delineating structural features of North Cameroon using the EIGEN6C4 high‐resolution global gravitational model

Contact Info

Product

Resources

About