干旱区生态环境知识资源中心(Arid): Mapping gold mineral prospectivity based on weights of evidence method in southeast Asmara, Eritrea

Arid

DOI	10.1016/j.jafrearsci.2021.104143
	Mapping gold mineral prospectivity based on weights of evidence method in southeast Asmara, Eritrea
	Fu, Changliang; Chen, Kaixu; Yang, Qinghua; Chen, Jianping; Wang, Jianxiong; Liu, Junlai; Xiang, Yunchuan; Li, Yanhua; Rajesh, H. M.
通讯作者	Chen, JP (corresponding author), China Univ Geosci Beijing, Beijing 100083, Peoples R China. ; Fu, CL (corresponding author), China Aero Geophys Survey & Remote Sensing Ctr Na, Beijing 100083, Peoples R China.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2021
卷号	176
英文摘要	Eritrea at the southern Nubian shield in northeast Africa has many gold deposits, and has been an important target for exploration. In view of the arid to semi-arid nature of the terrain, there is continuous quest for new methods of mineral exploration. In this study, we highlight the importance of GIS-based weights of evidence (WofE) method in mapping the gold mineral prospectivity of the Ewanet area, southeast Asmara. For the purpose, data was gathered from geological, metallogenic, geochemical and remote sensing analyses of the study area. Seven evidence maps produced from these spatial data sets were used to calculate posterior probabilities and delineate prospectivity areas for gold deposits. The prediction-area plot provides the evaluation of posterior probabilities and indicates that 83% of the existing mineral occurrences are predicted in 19% of the study area. Two types of gold occurrences, i.e., structure-alteration type and quartz-vein type, were identified during field work. It was found that faults are the main ore-controlling factors, and Au geochemical anomaly is prominently correlated with mineralization. We suggest that the identified prospectivity areas of gold exploration in the Ewanet area are well worth carrying out further mineral exploration.
英文关键词	Mineral prospectivity mapping GIS-Based weights of evidence method Gold deposit Eritrea Arabian-nubian shield
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000629502600016
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368917
作者单位	[Fu, Changliang; Chen, Jianping; Liu, Junlai] China Univ Geosci Beijing, Beijing 100083, Peoples R China; [Fu, Changliang; Yang, Qinghua] China Aero Geophys Survey & Remote Sensing Ctr Na, Beijing 100083, Peoples R China; [Chen, Kaixu; Wang, Jianxiong; Li, Yanhua] China Geol Survey, Wuhan Ctr, Wuhan 430205, Peoples R China; [Xiang, Yunchuan] China Geol Survey, Dev & Res Ctr, Beijing 100037, Peoples R China; [Rajesh, H. M.] BIUST, Dept Earth & Environm Sci, Palapye, Botswana
推荐引用方式 GB/T 7714	Fu, Changliang,Chen, Kaixu,Yang, Qinghua,et al. Mapping gold mineral prospectivity based on weights of evidence method in southeast Asmara, Eritrea[J],2021,176.
APA	Fu, Changliang.,Chen, Kaixu.,Yang, Qinghua.,Chen, Jianping.,Wang, Jianxiong.,...&Rajesh, H. M..(2021).Mapping gold mineral prospectivity based on weights of evidence method in southeast Asmara, Eritrea.JOURNAL OF AFRICAN EARTH SCIENCES,176.
MLA	Fu, Changliang,et al."Mapping gold mineral prospectivity based on weights of evidence method in southeast Asmara, Eritrea".JOURNAL OF AFRICAN EARTH SCIENCES 176(2021).