Gravity and magnetic investigations in the Haouz basin, Morocco. Interpretation and mining implications

Jaffal, Mohammed; Goumi, Najib El; Kchikach, Azzouz; Aı̈fa, Tahar; Khattach, Driss; Manar, Ahmed

doi:10.1016/j.jafrearsci.2010.03.012

Cited by 30 publications

(27 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the identification of known geological features, the main findings demonstrate the reliability of the gravity data derived from the Earth Gravitational Model EGM2008. Ground gravity data are usual tools to study the subsurface of terrestrial crust (Poudjom-Djomani 1993; Marcel et al 2010;Jaffal et al 2010;Hadhemi et al 2016). The study area comprises volcanic mountains which are hardly surveyed by ground gravity campaigns.…”

Section: Validation Of Resultsmentioning

confidence: 99%

“…This combination is used not only to bring out lineaments but also to evaluate different dips (vertical and oblique). It entails applying the upward continuation filter to the Bouguer anomalies at progressive heights and to determine the horizontal gradient of each upward continued distance (Blakely and Simpson 1986;Everaerts and Mansy 2001;Jaffal et al 2010;Hadhemi et al 2016). For each upward continued map, we represent essentially the maxima of the horizontal gradient in the map (Blakely and Simpson 1986).…”

Section: Maxima Of Horizontal Gradient Coupled To Upward Continuationmentioning

confidence: 99%

“…It is assumed that the maxima of magnitude (Blakely and Simpson 1986) is located where steep density contrasts. Horizontal gradient peaks are therefore interpreted as geological structures such as geological contacts or faults (Jaffal et al 2010;Hadhemi et al 2016). The geometry of horizontal gradient peaks is very characteristic of the highlighted element.…”

Section: Horizontal Gradientmentioning

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

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: Validation Of Resultsmentioning

confidence: 99%

Section: Maxima Of Horizontal Gradient Coupled To Upward Continuationmentioning

confidence: 99%

Section: Horizontal Gradientmentioning

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

View full text Add to dashboard Cite

show abstract

“…However, the boundaries of the geological units are not assured by the 3D probability models of the gravitational and magnetic data. The 2.5D forwardmodeling method is generally used to interpret the geological unit property (Jaffal et al, 2010;Meng et al, 2009;Wang et al, 2011).…”

mentioning

confidence: 99%

3D geological modeling based on gravitational and magnetic data inversion in the Luanchuan ore region, Henan Province, China

Wang

Zhu

Zhang

et al. 2012

Journal of Applied Geophysics

View full text Add to dashboard Cite

Volcanic rocks distribution and basement structure in western–central Junggar Basin revealed by gravitational and magnetic data

et al. 2017

View full text Add to dashboard Cite

The Junggar Basin is a large superimposed basin with multistage evolution. The Carboniferous volcanic rock in the middle‐lower part of the basin has been an important target of oil and gas exploration. Therefore, it is crucial to establish a set of efficient methods and techniques to find out the distribution of the Carboniferous volcanic rock and the tectonic factors related to the reservoir forming of the volcanic rock. Our research reveals that the density and magnetism of the Carboniferous volcanic rock are obviously higher than those of the Mesozoic and Cenozoic sedimentary rocks. With a series of frequency domain filters and boundary enhancement techniques, we determine the residual gravitational and magnetic anomalies caused by the Carboniferous volcanic rock. Combined with borehole and seismic data from the studied areas, the horizontal and vertical distributions of the Carboniferous volcanic rock are defined, and the lithologies of different types of volcanic rocks are predicted. Furthermore, the gravitational and magnetic anomalies are used to estimate the basement faults and topography. The regional deep faults and their secondary faults of the basement are outlined, and the model of basement relief is constructed. Finally, the effects of the fracture structure and the basement topography in the process of volcanic activity and hydrocarbon accumulation are fully discussed. These results provide fundamental information for optimal selection of the favorable area of volcanic reservoir.

show abstract

Gravity and magnetic investigations in the Haouz basin, Morocco. Interpretation and mining implications

Cited by 30 publications

References 19 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)

3D geological modeling based on gravitational and magnetic data inversion in the Luanchuan ore region, Henan Province, China

Volcanic rocks distribution and basement structure in western–central Junggar Basin revealed by gravitational and magnetic data

Contact Info

Product

Resources

About