干旱区生态环境知识资源中心(Arid): Integrated geophysical methods for delineating crustal structures and hydrothermal alteration zones for mineral exploration projects in parts of west-central, Nigeria

Arid

DOI	10.1007/s40808-021-01275-5
	Integrated geophysical methods for delineating crustal structures and hydrothermal alteration zones for mineral exploration projects in parts of west-central, Nigeria
	Adebiyi, Leke Sunday; Eluwole, Akinola Bolaji; Fajana, Akindeji Opeyemi; Salawu, Naheem Banji; Falade, Sesan Cornelius; Dopamu, Kehinde Oladele; Alejolowo, Esther Adetola
通讯作者	Adebiyi, LS (corresponding author), Landmark Univ, Dept Phys Sci, PMB 1001, Omu Aran, Kwara, Nigeria. ; Adebiyi, LS (corresponding author), Fed Univ, Dept Geophys, Oye Ekiti, Ekiti, Nigeria.
来源期刊	MODELING EARTH SYSTEMS AND ENVIRONMENT
ISSN	2363-6203
EISSN	2363-6211
出版年	2021
英文摘要	The knowledge that quite many primary deposits of economic minerals in Nigeria are structurally controlled, the principal of which are faults, folds, shear zones, mylonites and hydrothermal alteration zones among others, has informed the choice of this study. Although significant success has been recorded in mapping many of the recognized structures, there are yet many gaps to fill especially in the area of hydrothermal alteration mappings. To provide new insights for mapping alteration zones, the present study integrated two airborne geophysical methods namely magnetic and radiometric methods with ground geophysical surveys comprising the electrical resistivity tomography (ERT) and very-low-frequency electromagnetic (VLF-EM) methods. The airborne data were interpreted using standard geophysical techniques such as horizontal gradient magnitude, radiometric ratio and radiogenic heat production. The results obtained in each case showed that the hydrothermal zone H3, out of the six suspected hydrothermal alteration zones namely H1, H2, H3, H4 H5 and H6, has positive prospects for hydrothermal alteration zone. The length and the average width of 30 km and 5 km respectively of the alteration zone H3 enabled its detection from airborne surveys. The zone H3 was, thereafter, investigated with ERT and VLF-EM methods. The results obtained from the ERT showed a fairly deformed homogeneous layer of high electrical resistivity below fairly weathered heterogeneous formations. The result of the VLF-EM method, on the other hand, showed several weak zones suspected to be fracture zones that may have aided the circulation of the hydrothermal fluids for subsequent mineral precipitation in wall rocks.
英文关键词	Radiometric method Magnetic method Radiogenic heat Hydrothermal alteration
类型	Article ; Early Access
语种	英语
收录类别	ESCI
WOS记录号	WOS:000695376300001
WOS关键词	GAMMA-RAY SPECTROMETRY ; SOUTH EASTERN DESERT ; FEATURES ; AREA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364185
作者单位	[Adebiyi, Leke Sunday; Falade, Sesan Cornelius; Dopamu, Kehinde Oladele; Alejolowo, Esther Adetola] Landmark Univ, Dept Phys Sci, PMB 1001, Omu Aran, Kwara, Nigeria; [Adebiyi, Leke Sunday; Eluwole, Akinola Bolaji; Fajana, Akindeji Opeyemi; Salawu, Naheem Banji] Fed Univ, Dept Geophys, Oye Ekiti, Ekiti, Nigeria; [Salawu, Naheem Banji] BS Geophys & Consultancy Ltd, Ilorin, Nigeria
推荐引用方式 GB/T 7714	Adebiyi, Leke Sunday,Eluwole, Akinola Bolaji,Fajana, Akindeji Opeyemi,et al. Integrated geophysical methods for delineating crustal structures and hydrothermal alteration zones for mineral exploration projects in parts of west-central, Nigeria[J],2021.
APA	Adebiyi, Leke Sunday.,Eluwole, Akinola Bolaji.,Fajana, Akindeji Opeyemi.,Salawu, Naheem Banji.,Falade, Sesan Cornelius.,...&Alejolowo, Esther Adetola.(2021).Integrated geophysical methods for delineating crustal structures and hydrothermal alteration zones for mineral exploration projects in parts of west-central, Nigeria.MODELING EARTH SYSTEMS AND ENVIRONMENT.
MLA	Adebiyi, Leke Sunday,et al."Integrated geophysical methods for delineating crustal structures and hydrothermal alteration zones for mineral exploration projects in parts of west-central, Nigeria".MODELING EARTH SYSTEMS AND ENVIRONMENT (2021).