干旱区生态环境知识资源中心(Arid): Integration of airborne geophysics and satellite imagery data for exploration targeting in porphyry Cu systems: Chahargonbad district, Iran

Arid

DOI	10.1111/1365-2478.13092
	Integration of airborne geophysics and satellite imagery data for exploration targeting in porphyry Cu systems: Chahargonbad district, Iran
	Riahi, Shokouh; Bahroudi, Abbas; Abedi, Maysam; Aslani, Soheila; Elyasi, Gholam-Reza
通讯作者	Abedi, M (corresponding author), Univ Tehran, Sch Min Engn, Coll Engn, Tehran, Iran.
来源期刊	GEOPHYSICAL PROSPECTING
ISSN	0016-8025
EISSN	1365-2478
出版年	2021
卷号	69 期号:5 页码:1116-1137
英文摘要	This study illustrates the application of a geometric average integration of aeromagnetic, radiometric and satellite imagery data over a region prone to Cu-bearing mineralization at Chahargonbad area in Kerman province of Iran. Processing aeromagnetic, radiometric and Advanced Spaceborne Thermal Emission and Reflection Radiometer satellite data can provide exploratory insights about favourable zones in association with porphyry-type ore occurrences, which can be synthesized through a combination of knowledge- and data-driven approaches as a geometric average and be represented in a mineral prospectivity map. The existence of known deposits in a prospect region can facilitate the investigation of significant exploratory footprints extracted from airborne data by calculating each indicator layer's weight by plotting a prediction-area curve accompanied by a concentration-area fractal curve. Among various indicators, the most important ones are determined based on derived weights from the prediction-area plots to be synthesized in a single Cu favorability map. To fulfil this aim, indicator layers from airborne geophysics (magmatic bodies, magnetic lineaments and potassium radiometry) and remote-sensing data (alterations such as argillic, phyllic, propylitic and iron oxide along with geological lineaments) were prepared and evaluated using the known porphyry Cu mineralization by the simultaneous plot of the concentration-area fractal model and the prediction-area curve to attain the ore prediction rate and the relevant occupied area of each map for weight assignment of indicators. The geometric average prospectivity model was applied to synthesize the leading indicators, and the result was compared with a multi-class index overlay map. This study's significance lies in improvement of the performance of the mineral prospectivity/potential mapping after running a geometric average by a higher ore prediction rate of 79%, which has occupied 21% of the area as potential zones for further mining investigations.
英文关键词	Airborne data Fractal analysis Prediction‐ Area plot Geometric average Porphyry Cu deposits
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000645464200001
WOS关键词	HYDROTHERMAL ALTERATION ZONES ; PRINCIPAL COMPONENT ANALYSIS ; EDGE-DETECTION ; SPATIAL EVIDENCE ; EASTERN DESERT ; COPPER-DEPOSIT ; ENHANCEMENT ; ASTER ; AREA ; MINERALIZATION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350417
作者单位	[Riahi, Shokouh; Bahroudi, Abbas; Abedi, Maysam; Aslani, Soheila; Elyasi, Gholam-Reza] Univ Tehran, Sch Min Engn, Coll Engn, Tehran, Iran
推荐引用方式 GB/T 7714	Riahi, Shokouh,Bahroudi, Abbas,Abedi, Maysam,et al. Integration of airborne geophysics and satellite imagery data for exploration targeting in porphyry Cu systems: Chahargonbad district, Iran[J],2021,69(5):1116-1137.
APA	Riahi, Shokouh,Bahroudi, Abbas,Abedi, Maysam,Aslani, Soheila,&Elyasi, Gholam-Reza.(2021).Integration of airborne geophysics and satellite imagery data for exploration targeting in porphyry Cu systems: Chahargonbad district, Iran.GEOPHYSICAL PROSPECTING,69(5),1116-1137.
MLA	Riahi, Shokouh,et al."Integration of airborne geophysics and satellite imagery data for exploration targeting in porphyry Cu systems: Chahargonbad district, Iran".GEOPHYSICAL PROSPECTING 69.5(2021):1116-1137.