Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s12665-017-7152-1 |
Reconnaissance geochemical survey in the Marahiq area, Wadi Allaqi region, south Egypt: a preliminary assessment of stream sediments for gold placer and environmental hazard | |
Darwish, Mohamed Abdallah Gad | |
通讯作者 | Darwish, Mohamed Abdallah Gad |
来源期刊 | ENVIRONMENTAL EARTH SCIENCES
![]() |
ISSN | 1866-6280 |
EISSN | 1866-6299 |
出版年 | 2017 |
卷号 | 76期号:23 |
英文摘要 | The Marahiq area represents a portion of the Pan-African belt from the Neoproterozoic age in south Egypt and includes metamorphosed ultramafic rocks, metavolcanic rocks, and granodiorite pluton. The area is characterized by the ancient abandoned Au mine and the recent active talc mines. The present paper provides a preliminary assessment of stream sediments for gold (Au) placer and environmental hazard. Steam sediments from 36 stations were analyzed using ICP-MS for determining the concentration of 53 elements. Various statistical techniques, graphical representations, a set of complementary sediment quality assessment methods, and different mapping methods have been applied. The results showed that Au and the investigated elements were influenced by long history of the ancient mining activities and weathering processes, leading to elevate Au and some heavy metal(loid)s concentrations and exhibit enrichment ratios as follows: Te > As > Au > Cu > Cd > Co > Ni > V. Whereas Cd, Co, and V were attributed to geogenic origin, As, Au, Cu, Ni, and Te were derived from anthropogenic mining activities. It is found that the anomalies of Au and the element of interest are indicative of Au placer and point out a new perspective Au-sulfide mineralization hosted along the favorable tectonic zones that were the main source of Au placer. Both As and Te are good pathfinders to explore Au placer and related mineralization. Environmentally, the excess of As, Cu, Ni, and Te could generate moderate levels of contamination and low level of ecological risk in the sediments. Although As, Cu and Ni posed medium-low potentially adverse effects and low toxicity levels, they cannot cause harmful influences on biological life. Accordingly, streambed sediments are considered as safe and acceptable as inoffensive materials for environmental management. Overall, this study is as reference values for governmental organizations for appraising future environmental pollution in the area. Also, it is fruitful for Au placer and promising with success for Au exploration along the shear zones and strike-slip faults. |
英文关键词 | Geochemical survey Stream sediments Gold placer Environmental hazard Marahiq area South Egypt |
类型 | Article |
语种 | 英语 |
国家 | Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000440342500001 |
WOS关键词 | HEAVY-METAL CONTAMINATION ; FRESH-WATER ECOSYSTEMS ; TRACE-ELEMENTS ; QUALITY GUIDELINES ; ESTUARINE SEDIMENTS ; ENRICHMENT FACTORS ; CONTINENTAL-CRUST ; MARINE-SEDIMENTS ; EASTERN DESERT ; SOILS |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/198687 |
作者单位 | Aswan Univ, Fac Sci, Geol Dept, Aswan 81528, Egypt |
推荐引用方式 GB/T 7714 | Darwish, Mohamed Abdallah Gad. Reconnaissance geochemical survey in the Marahiq area, Wadi Allaqi region, south Egypt: a preliminary assessment of stream sediments for gold placer and environmental hazard[J],2017,76(23). |
APA | Darwish, Mohamed Abdallah Gad.(2017).Reconnaissance geochemical survey in the Marahiq area, Wadi Allaqi region, south Egypt: a preliminary assessment of stream sediments for gold placer and environmental hazard.ENVIRONMENTAL EARTH SCIENCES,76(23). |
MLA | Darwish, Mohamed Abdallah Gad."Reconnaissance geochemical survey in the Marahiq area, Wadi Allaqi region, south Egypt: a preliminary assessment of stream sediments for gold placer and environmental hazard".ENVIRONMENTAL EARTH SCIENCES 76.23(2017). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Darwish, Mohamed Abdallah Gad]的文章 |
百度学术 |
百度学术中相似的文章 |
[Darwish, Mohamed Abdallah Gad]的文章 |
必应学术 |
必应学术中相似的文章 |
[Darwish, Mohamed Abdallah Gad]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。