An Interpretation of Structures from the Aeromagnetic Field over a Region in the Nigerian Younger Granite Province  

作　　者：J. Raimi B. B. M. Dewu P. Sule 

机构地区：[1]Centre for Energy Research and Training, Zaria, Nigeria [2]Department of Physics, Ahmadu Bello University (ABU), Zaria, Nigeria

出　　处：《International Journal of Geosciences》2014年第3期313-323,共11页地球科学国际期刊（英文）

摘　　要：An interpretation of high resolution aeromagnetic data was carried out to provide new information about the study area. Located between latitude 10°30'N and 11°00'N and longitude 8°30'E and 9°00'E, the interpretation revealed previously unknown folds and magnetic anomaly with a signature that is similar to those associated with ring complexes in the study area but without the surface manifestation that is associated with the complexes. Qualitatively interpreted as unexposed ring complex, the magnetic anomaly is underlain by cross-over of major lineaments;implying presence of weak zone that probably allowed the volcanic eruption that initiated the emplacement of the source of the anomaly. A depth that ranges from outcrop to 1200 m and from outcrop to 1800 m is respectively suggested for the unexposed ring complex and folds by the Euler deconvolution results.An interpretation of high resolution aeromagnetic data was carried out to provide new information about the study area. Located between latitude 10°30'N and 11°00'N and longitude 8°30'E and 9°00'E, the interpretation revealed previously unknown folds and magnetic anomaly with a signature that is similar to those associated with ring complexes in the study area but without the surface manifestation that is associated with the complexes. Qualitatively interpreted as unexposed ring complex, the magnetic anomaly is underlain by cross-over of major lineaments;implying presence of weak zone that probably allowed the volcanic eruption that initiated the emplacement of the source of the anomaly. A depth that ranges from outcrop to 1200 m and from outcrop to 1800 m is respectively suggested for the unexposed ring complex and folds by the Euler deconvolution results.

关 键 词：AEROMAGNETIC Euler Deconvolution Ring Complex LINEAMENTS FOLDS 

分 类 号：R73[医药卫生—肿瘤]