Reconnaissance geological mapping and mineral exploration in northern sudan using satellite remote sensing

1987 ◽  
Vol 22 (S2) ◽  
pp. 225-249 ◽  
Author(s):  
P. S. Griffiths ◽  
P. A. S. Curtis ◽  
S. E. A. Fadul ◽  
P. D. Scholes
Keyword(s):  
Remote Sensing ◽  
Satellite Remote Sensing ◽  
Mineral Exploration ◽  
Geological Mapping

scholarly journals Hyperspectral analysis of lithologies in the Arctic in areas with abundant lichen cover

2018 ◽  
pp. 51-55
Author(s):  
Sara Salehi
Keyword(s):  
Remote Sensing ◽  
Chemical Composition ◽  
Mineral Exploration ◽  
Spectral Characteristics ◽  
Image Data ◽  
Geological Mapping ◽  
The Arctic ◽  
Electromagnetic Spectrum ◽  
Rock Types ◽  
The Impact

Lithological mapping using remote sensing depends, in part, on the identification of rock types by their spectral characteristics. Chemical and physical properties of minerals and rocks determine their diagnostic spectral features throughout the electromagnetic spectrum. Shifts in the position and changes in the shape and depth of these features can be explained by variations in chemical composition of minerals. Detection of such variations is vital for discriminating minerals with similar chemical composition. Compared with multispectral image data, airborne or spaceborne hyperspectral imagery offers higher spectral resolution, which makes it possible to estimate the mineral composition of the rocks under study without direct contact. Arctic environments provide challenging ground for geological mapping and mineral exploration. Inaccessibility commonly complicates ground surveys, and the presence of ice, vegetation and rock-encrusting lichens hinders remote sensing surveys. This study addresses the following objectives: 1. Modelling the impact of lichen on the spectra of the rock substrate; 2. Identification of a robust lichen index for the deconvolution of lichen and rock mixtures and 3. Multiscale hyperspectral analysis of lithologies in areas with abundant lichens.

scholarly journals A preliminary approach on the use of satellite hyperspectral data for geological mapping

2007 ◽  
Vol 40 (4) ◽  
pp. 1998
Author(s):  
G. K. Nikolakopoulos ◽  
D. A. Vaiopoulos ◽  
G. A. Skianis
Keyword(s):  
Remote Sensing ◽  
Narrow Band ◽  
Signal To Noise Ratio ◽  
Mineral Exploration ◽  
Hyperspectral Data ◽  
Geological Mapping ◽  
Atmospheric Effects ◽  
Extensive Information ◽  
Hyperion Image ◽  
Noise Fraction

During the last decades remote sensing imagery has contributed significantly to mineral exploration. Motivated by the increasing importance of hyperspectral remote sensing, this study investigates the potential of the current-generation satellite hyperspectral data for geological mapping. A narrow-band Hyperion image, acquired in summer 2001, was used. The study area is situated at Milos island. Two different approaches were used for the reduction of the Hyperion bands. First, on the basis of histogram statistics the uncalibrated bands were selected and removed. Then the Minimum Noise Fraction was used to classify the bands according to their signal to noise ratio. The noisiest bands were removed and sixty bands were selected for further processing. In order to make meaningful comparisons between image spectra and laboratory reflectance spetra, the image radiance values must be corrected (calibrated) to reflectance by removing the atmospheric effects. Atmospheric corrections techniques were applied to the selected Hyperion bands. The comparison of the Hyperion hyperspectral data with the JPL spectral library gave quite encouraging results. Further processing of the data has to be done using the image analysis algorithms that have been developed specifically to exploit the extensive information contained in hyperspectral imagery.

scholarly journals Application of Remote Sensing in Earth Sciences – A Review

2021 ◽  
Vol 10 (05) ◽  
pp. 045-051
Author(s):  
Adel Shirazy Shirazy ◽  
Aref Shirazy ◽  
Hamed Nazerian
Keyword(s):  
Earth Sciences ◽  
Remote Sensing ◽  
Mineral Exploration ◽  
Mineral Resources ◽  
Geological Mapping ◽  
Alteration Zones ◽  
Review Study ◽  
Remote Sensing Techniques

The application of remote sensing sciences in the field of geology is very diverse and wide. One of its most important applications in earth sciences is geological mapping. Mineral exploration using remote sensing techniques is done in different ways, one of them is the mapping alteration zones related to mineral resources. Given the importance of remote sensing and geosciences in today's industry and given that deposit-related alteration areas are one of the most important exploratory keys. in this review study the mapping methods and alteration zones detection using remote sensing techniques and other applications of remote sensing in earth sciences and its generalities are explained.

scholarly journals Remote sensing data for Geological mapping and gold prospecting of Inteet area, northern Sudan

2021 ◽  
Vol 258 ◽  
pp. 03009
Author(s):  
Mohammed Ibrahim ◽  
Alexander Kotelnikov ◽  
Pavel Podolko ◽  
Elena Kotelnikova
Keyword(s):  
Remote Sensing ◽  
Gold Mineralization ◽  
Mineral Exploration ◽  
Mining Industry ◽  
Remote Sensing Data ◽  
Field Work ◽  
Geological Mapping ◽  
Landsat 8 ◽  
Office Work ◽  
Rock Types

The mineral exploration has improved in the last decades, today there are different methods of remote exploration, that are applied in mining industry worldwide, helping to discover ore minerals deposits in zones that have not access to them. The study area of this article is located about 400 km from Khartoum, characterized by low reliefs covered by sand and gravely sand. The study wants to carry out the geological mapping and the prospective zones using remote sensing and GIS techniques. Sudan is characterized by geological formations over inaccessible areas, in that way the remote sensing technique has a great value in these conditions, saving time and money. The used methodology has been divided into three phases: Pre-field office work, field work and post-field work. The processing of the satellite images includes color band composites, in order to obtain the lithological and geological features, the different types of rocks were defined by a different color. Obtaining the following rock types: High-grade gneisses and migmatites described to comprise the basement complex, ophiolitic mafic-ultramafic rocks that appear in the northern and southern sides of the area, metasediments that cover most of the study area, syn-orogenic intrusions that cut the older mafic-ultramafic units and the metavolcanosedimentary sequences, post-orogenic intrusions and gold mineralization. Based on the image analysis results of Landsat 8 OLI, 32 ore samples were collected to analysis gold and pathfinder elements obtaining high anomalies results for Au, Ag, Cu, Zn, Pb and Fe.

Progress of remote sensing in Australia

1971 ◽  
Vol 2 (3) ◽  
pp. 20
Author(s):  
V.L.R. Furlong
Keyword(s):  
Remote Sensing ◽  
Fresh Water ◽  
Mineral Exploration ◽  
Geological Mapping ◽  
Direct Result ◽  
New Mineral ◽  
Detection Techniques ◽  
Mining Areas ◽  
Infra Red ◽  
Multispectral Photography

During the past year multispectral photography and thermal infra-red scanning have been introduced to the region. The Cartwright multilens camera and the Daedalus thermal scanner have opened entirely new remote sensing horizons to consumers including government agencies, mining companies, forestry departments and municipal authorities. Much of the introduction has been via comprehensive test programmes over well known and documented features. Multispectral photography has been successfully used in several Queensland and Tasmanian mining areas as an aid to geological mapping, and by highway authorities in New South Wales. Thermal infra-red scanning has been carried out in the Territory of Papua New Guinea in search for geothermal areas and has proved highly successful in the search for upwelling fresh water into the ocean along coastal areas ultimately for a source of fresh water. Pollution studies involving oil slicks, sewerage, thermal pollution and illegal releasing of industrial waste have taken place in and around major population centres on the east coast using thermal detection techniques. Undoubtedly one of the major contributions thermal infra-red scanning has achieved is in the mineral exploration field. The large arid regions of Australia lend themselves well to presunrise scanning, where as a direct result of the work undertaken, significantly large new mineral discoveries have been made. Additional research and development further into the remote sensing field are taking place in Universities, quasi-governmental agencies and in the private sector like ourselves. The future looks bright for remote sensing in this part of the world and through same are continuing to further improve the environment we live in.

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