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Interpretation of Amplitude response to shallow and Deep-Seated Anomalies of Bamenda Massif (Sheets: 303, 304 and 305), Southeastern Nigeria

	International Journal of Scientific Research and Engineering Development (IJSRED)	Full Text:
	Published Issue : Volume-3 Issue-5
	Year of Publication : 2020
	Unique Identification Number : IJSRED-V3I5P87
	Authors :Oghonyon Rorome, Sylvester Amunabo Ugwu
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Abstract :

The study on interpretation of amplitude response to shallow and deep-seated anomalies of Bamenda Massif (sheets: 303, 304, and 305) Southeastern Nigeria has been evaluated. The data sets used are digitized maps of Aeromagnetic data. The study area was characterized into four distinct zones such as A, B, C and D. Zone A occur in the Northern portion and it is characterized by linear anomaly of amplitude 66.2 - 98.5nT. Zone B and C primarily share the same structural grain connecting the southwest and southern portions of the study area where they are characterised with large ''bull eye'' and narrow shaped anomalies. Zone D occupies the western and central portions of the study area showing features of magnetic highs and lows due to sporadic intrusions. The analysis review lineament structures aligned in a NE-SW and NW-SE trends which is in similar pattern to the initial rifting of the southern Nigerian margin system. Zone A, B and C are bound by intrusives of igneous origin. However, the interconnectivity of the structural lineaments makes them stand out as pathways for mineralization. Thus, most of the lineaments are believed to be located at a depth range of <246.5m to 258.2m, 258.2m to 437m, 212.9m to >626.1m and 769.2m to 1039.7m within the subsurface rocks.