首页|Detecting areas of high-potential gold mineralization using ASTER data

Detecting areas of high-potential gold mineralization using ASTER data

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  • NSTL
  • Elsevier
Remote sensing plays an important role in mineral exploration. One of its proven applications is extracting and locating alteration zones that are related to gold deposits. In this study, surface reflectance data derived fromthe Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) imagery are used to map hydrothermal alteration zones for gold exploration.A band ratio derived fromthe image spectra (4/8, 4/2, and 8/9 in RGB) and a mineral extraction method based on n-dimensional spectral feature space have been developed, and tested against other conventional methods, and known auriferous alteration zones. Spectral signatures used to construct the newband ratio are validated by a field study of the Abu-Marawat area in the Eastern Desert of Egypt. Results indicate that the method is promising for identifying alteration zones and is a useful tool for gold exploration in similar areas elsewhere.

Arabian–Nubian ShieldEastern Desert of EgyptAlteration zonesGold explorationRemote sensing

Safwat Gabr、Abduwasit Ghulam、Timothy Kusky

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National Authority for Remote Sensing and Space Sciences, 23 Joseph Tito St., El-Nozha El-Gedida, P.O. Box 1564, Alf Maskan, Cairo, Egypt

Department of Earth and Atmospheric Sciences and Center for Environmental Sciences, Saint Louis University, St Louis, MO 63103, USA

State Key Lab for Geological Processes and Mineral Resources, Ministry of Education, Three Gorges Geohazards Research Center, China University of Geosciences, Wuhan,Hubei 430074, China

2010

10.1016/j.oregeorev.2010.05.007

Ore Geology Reviews

Ore Geology Reviews

EISCI
ISSN：0169-1368
年,卷(期)：2010.38(1/2)
  • 156
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