Exploratory mapping of structures controlling mineralization in Southeast Nigeria using high resolution airborne magnetic data

Ekwok, Stephen E.; Akpan, Anthony E.; Kudamnya, Ebenezer A.

doi:10.1016/j.jafrearsci.2019.103700

Cited by 35 publications

(16 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2019) and Oha et al (2016). These regions described as hydrothermally altered (Ekwok et al, 2020a;Oha et al, 2016) are characterized by faults, fractures, fissures, dykes, sills and baked Albian shales (Ekwok et al, 2019). Likewise, similar enhancement on the Bouguer gravity data (Figs.…”

Section: Discussionmentioning

confidence: 78%

“…The positions of these lineaments match closely with each other signifying the extended nature of the weak zones. The lineament system are regarded as syn-rift structures initiated during the rifting episode that created the Cretaceous Benue Trough and other inland sub-basins (Ekwok et al, 2020a;Ekwok et al, 2019). Also, towards the eastern flank of these models, the breaks indicate the border line between the OP and LBT.…”

Section: Resultsmentioning

confidence: 99%

“…11 and 12) areas respectively. These geologic structures related to the Santonian Abakaliki Anticlinorium (Ekwok et al, 2020a) and Quaternary-Recent Cameroun Volcanic Line (Akpan et al, 2014) caused extensive uplifts, faulting, fracturing and baking of sedimentary series (Ekwok et al, 2020b;Arinze et al, 2019;Oha et al, 2016) in these locations and adjoining areas. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…9, 10, 11 and 12) correlate strongly with each other. In the LBT, researchers have estimated depth in the range of ~2.5-8.0 km (Ekwok et al, 2020a). The thin sedimentations observed in the area is due to the proliferation of post-depositional intrusions (Figs.…”

Section: Discussionmentioning

confidence: 99%

“…The intensity, localization, features of hydrothermal mineralization plus the direction and character of groundwater migration are controlled by faults, fractures, fissures etc. (Ekwok et al, 2020a;Ekwok et al, 2020b). The enhanced use of geologic concepts and geophysical investigations in a completely integrated programs have been successful in the determination of buried geologic structures and location of new mineral deposits (Woakes et al, 1987).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Implications of tectonic anomalies from potential field data in some parts of Southeast Nigeria

et al. 2021

Self Cite

View full text Add to dashboard Cite

Tectonic structures controlling mineralization in some parts of Southeast Nigeria were evaluated using airborne potential field data. High and low frequency filters and depth determination tools were adopted to evaluate short and long wavelength anomalies, resolve the spatial spreading of igneous intrusions, depths to geologic sources and basin topography. The high frequency results exhibited high concentration of short wavelength anomalies in the Obudu Plateau and Ikom-Mamfe Rift. The underlying main tectonics of the area elucidated by the low frequency results caused the widespread occurrences of short wavelength geologic structures that are revealed by the high frequency maps. The study area is characterized by comparatively thin (~13.0 to <3000 m) sedimentation. The observed thin thickness is as a result of the massive Precambrian basement outcrops in some locations in the Obudu Plateau and the proliferation of igneous intrusions within this part of the Lower Benue Trough. The 2-D models showed the undulating nature of the underlying basin topography, the location of intrusions, domal structures and related normal faults. The locations and neighbourhood of intrusions and/or short wavelength structures are viable sites for lead-zinc-barite, brine and metallogenic minerals.

show abstract