Geology and Geochemical Exploration for Gold at Qeissan County, Blue Nile State, S-E Sudan
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 2, Issue 9
Abstract
A Study of the geology and geochemical evolution of the basement rocks of the Blue Nile area shows that they can be placed into five tectonic terrains; amphibolite inclusions unconformably overlain by heterogeneous and more lithologically varied super crustal assemblage of intercalated Para-gneisses and calc silicate rocks all of which have been largely metamorphosed in the amphibolites facies, all of these rocks have been cut by several intrusive phases. The present work provides a detailed account of the geology of the Qeissan area, rocks and the intrusions cutting them, their stratigraphy, structure, petrography and geochemistry are discussed. High-grade gneisses and low grade volcano-sedimentary rocks underlain the Qeissan area. They have been folded and faulted extensively. Orogenic plutons and an orogenic ring complex have intruded these successions. A mylonitic quartz-feldthpathic zone of 3 to 6 kilometers wide is trending northeast to southwest hosting the auriferous quartz veins. An oriented study (grid soil sampling, quartz veins and their wall rock alteration zone sampling) has been carried out to determine the anomalous area. All samples, (soil, rock & alteration zone) are prepared, analyzed and the results are interpreted using different software’s. The soil samples shows a rather low gold grades comparing with those of quartz veins. Most of the gold is found in quartz veins and their wall-rock alteration zones. The auriferous veins are grey to milky in colour, about 1 – 3 m wide and 20 – 300 m long; often pinching and swelling up to 1 – 4 km along their strikes. Systematic surface exploration resulted into; profile soil sampling, 0.1 – 0.92 ppm Au; rock chip sampling, 0.1 – 4.27 ppm of Au.
Authors and Affiliations
Siddig, M. Elzien
Keywords
Related Articles
- EP ID EP117333
- DOI -
- Views 79
- Downloads 0
Simulation of Interleaved Boost Converter Using Closed Loop Fuzzy Logic Controller
Interleaved power converters can be very beneficial for high performance electrical equipment applications. Reductions in size and electromagnetic emission along with an increase in efficiency, transient response,...
SUPER-RESOLUTION BASED IMAGE WITH VIDEO INPAINTING
Image has become an important part of our life. The image inpainting is a technique of removing the unwanted part of image without disturbing its overall structure. The inpainting of the low resolution images are...
Design And Analysis of Transceiver Using Co-Operative Diversity to Reduce Fading Over FSO Links
In this paper, To combat against the atmospheric turbulence induced fading over FSO link a spatial diversity technique is used to design the transceiver. Cooperative diversity is proposed and analyzed in noncohere...
Microcontoller Based Gesture Controlled Wheelchair Using Accelerometer
“Speech” and “gestures” are the expressions, which are mostly used in communication between human beings and for Human Computer Interaction (HCI). Recent development promises a wide scope in developing smart cont...
SOLAR POWERED BATTERY OPERATED ELECTRIC VEHICLE AS AN OPTION FOR FUEL VEHICLE
India’s road are becoming moreconngested each year with cars and buses. Research has shown that motorization is increasing even more rapidly than urbanization and increased traffic worsens India’s pollution proble...