Mapping of fracture zones and structural lineaments of the Gulf of Guinea passive margins using marine gravity data from CryoSat-2 and Jason-1 satellites

Ghomsi, Franck Eitel Kemgang; Pham, Luan Thanh; Tenzer, Robert; Esteban, Federico Damián; Vu, Tich Van; Kamguia, Joseph

doi:10.1080/10106049.2022.2040602

Cited by 12 publications

(2 citation statements)

References 100 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the complex geodynamics of northern Cameroon, the extraction of linear anomalies for the identification of the subsurface structure, such as lithological contacts, faults, folds, and fractures, is important for the interpretation of the potential field data (Chouhan, Singh, Pal, & Choudhury, 2020; Pham, 2020; Pham, Eldosouky, Oksum, & Saada, 2020; Pham, Oksum, Le, Ferreira, & Le, 2021; Zhang, Hao, Wu, Jiang, & Xu, 2013). Satellite‐derived gravity models have recently been widely employed for various structural and tectonic investigations, particularly where direct terrestrial data acquisition is scarce or problematic (Braitenberg, 2015; Ghomsi et al, 2020, 2022, b; Li, Braitenberg, & Yang, 2013; Odera, 2019; Sobh, Mansi, Campbell, & Ebbing, 2018).…”

Section: Introductionmentioning

confidence: 99%

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

Ghomsi

Pham²,

Steffen

et al. 2022

Geological Journal

Self Cite

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

Section: Introductionmentioning

confidence: 99%

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

Ghomsi

Pham²,

Steffen

et al. 2022

Geological Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…Gravity and magnetic data can provide vital information on the subsurface structures (Dung and Minh, 2017;Hang et al, 2019;Eldosouky et al, 2021a;Eldosouky et al, 2021b;Oksum 2021). The determination of geological boundaries from the interpretation of gravity data has been the subject of several studies, and many different techniques have been introduced (Melouah et al, 2021;Eldosouky et al, 2022a;Pham et al, 2022a;Eldosouky et al, 2022b;Pham et al, 2022b;Eldosouky et al, 2022c;Ghomsi et al, 2022c;Eldosouky et al, 2022d;Ghomsi et al, 2022d), such as, for example, the peak detection methods (Blakely and Simpson, 1986;Hang et al, 2017;Pham et al, 2018;Pham et al, 2021), vertical derivatives, the filters of horizontal gradient (Cordell, 1979;Cordell and Grauch, 1985), the analytical signal (Nabighian, 1972;Nabighian, 1984;Roest et al, 1992), tilt angle (Miller and Singh, 1994), the horizontal gradient amplitude of tilt angle (Verduzco et al, 2004), enhanced horizontal gradient amplitude (Pham et al, 2020a), improved logistic function (Pham et al, 2020b), and balanced horizontal gradient amplitude filters (Prasad et al, 2022a;Prasad et al, 2022b).…”

mentioning

confidence: 99%

Contribution of advanced edge-detection methods of potential field data in the tectono-structural study of the southwestern part of Cameroon

et al. 2022

Self Cite

View full text Add to dashboard Cite

The southwest part of Cameroon is composed of a range of geological structures and sedimentary basins, whose geological history dates from the Cretaceous, and their establishment would have originated from the opening of the South Atlantic. Among these structures, the most important is the Cameroon Volcanic Line, generally denoted CVL, followed by the southern part of the Central African Shear Zone (CASZ) called the Foumban Shear Zone (FSZ), the Ntem Complex, the Benue Trough, the northern margin of the Congo Craton, and many others. The major structures identified in this part are formed as a result of geodynamic activity between the Oligocene and the recent period, to which we can add the volcanism that exists along with the continental limit. The XGM201e_2159 model is used to highlight the geological structures of Southwestern Cameroon. First, we separated the regional and residual anomalies from Bouguer gravity data. Then, we used a combination of filters to enhance the signature of the residual anomalies in Southwest Cameroon. These filters identified various geological structures in the area. Finally, we applied the enhanced horizontal gradient amplitude (EHGA) and multi-scale horizontal derivative of the vertical derivative (MSHDVD) methods to reveal the geological contacts, allowing us to establish the corresponding structural map of the region. In addition, the results obtained in this study are the first to precisely define the circumferential demarcation of the continental and oceanic expansions of Mount Cameroon, while clearly illustrating the Bao, Bomana, Tiko, and Ekona faults that extend to the Bakassi Peninsula and the Douala outlet. Furthermore, they highlight the strike–slip faults in the summit vicinity. The structural map shows that most of the geological boundaries identified in the area are trending in the NE–SW, NNE–SSW, ENE–WSW, N–S, and NW–SE directions.

show abstract

An effective edge detection technique for subsurface structural mapping from potential field data

Pham,

Van Duong,

Kieu Duy

et al. 2023

Acta Geophys.

View full text Add to dashboard Cite

Mapping of fracture zones and structural lineaments of the Gulf of Guinea passive margins using marine gravity data from CryoSat-2 and Jason-1 satellites

Cited by 12 publications

References 100 publications

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

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

Contribution of advanced edge-detection methods of potential field data in the tectono-structural study of the southwestern part of Cameroon

An effective edge detection technique for subsurface structural mapping from potential field data

Contact Info

Product

Resources

About