Geological control of massive sulfide mineralization in the Neoproterozoic Wadi Bidah shear zone, southwestern Saudi Arabia, inferences from orbital remote sensing and field studies

Abstract This study combines new field and orbital remote sensing data to determine geologic controls on sulfide mineralization in the Wadi Bidah Mineral District (WBMD) located in the Neoproterozoic (900–550 Ma) Arabian Shield of southwestern Saudi Arabia. The brittle and ductile deformation of these massive sulfide deposits and host rock reflect tectonic events occurring in the Arabian Shield during the Neoproterozoic (900–550 Ma). Remote sensing data were used in conjunction with GIS software (ARCVIEW) to map lithologic units and mineral deposits, analyze and define regional structural trends, and establish geologic controls on sulfide mineralization. Orbital remote sensing data sets include scenes from Landsat 7 and ASTER. The sulfide deposits of the WBMD are found within a group of felsic volcaniclastics. A marble unit within the felsic volcaniclastic group is used as a marker horizon. Based on the distribution of the sulfide deposits relative to the marble unit, all sulfide deposits appear to be stratabound. Deposits have been folded and faulted into their present positions. Structural control of mineralization appears to be limited to post-mineralization folding and shearing.

[1]  Robert J. Stern,et al.  Sutures and shear zones in the Arabian-Nubian Shield , 1996 .

[2]  H. Kaufmann,et al.  Concepts, processing and results , 1988 .

[3]  M. J. Roobol,et al.  Late Proterozoic lavas of the Central Arabian Shield—evolution of an ancient volcanic arc system , 1983, Journal of the Geological Society.

[4]  G. Abdelhamid,et al.  An investigation of mineralized zones revealed during geological mapping, Jabal Hamra Faddan—Wadi Araba, Jordan, using LandsatTM data , 1994 .

[5]  F. Sabins,et al.  Remote sensing for mineral exploration , 1999 .

[6]  Robert J. Stern,et al.  Mapping gossans in arid regions with Landsat TM and SIR-C images: the Beddaho Alteration Zone in northern Eritrea , 2000 .

[7]  Barry Jackaman.  Genetic and environmental factors controlling the formation of the massive sulphide deposits of Wadi Bidah and Wadi Wassat, Saudi Arabia , 1971 .

[8]  P. Johnson,et al.  The geotectonic environments of late Proterozoic mineralisation in the Southern Arabian Shield , 1984 .

[9]  James Bethel,et al.  ISPRS journal of photogrammetry and remote sensing, report for the period 1996-2000 , 2000 .

[10]  V. Camp.  Island arcs and their role in the evolution of the western Arabian Shield , 1984 .

[11]  R. Earhart,et al.  Geology and mineral evaluation of the Wadi Bidah district, southern Hijaz quadrangle, Kingdom of Saudi Arabia , 1970 .

[12]  R. Unrug.  Mineralization controls and source of metals in the Lufilian fold belt, Shaba (Zaire), Zambia, and Angola , 1989 .

[13]  F. Kruse,et al.  Use of Thematic Mapper Imagery to Identify Mineralization in the Santa Teresa District, Sonora, Mexico , 1993 .

[14]  S. Drury.  Image interpretation in geology , 1987 .

[15]  R. Agar.  The tectono-metallogenic evolution of the Arabian Shield , 1992 .

[16]  H. Blodget,et al.  Discrimination of rock classes and alteration products in southwestern Saudi Arabia with computer-enhanced LANDSAT data , 1978 .

[17]  D. Stoeser,et al.  Pan-African microplate accretion of the Arabian Shield , 1985 .

[18]  P. Curtis,et al.  Reconnaissance geological mapping and mineral exploration in northern sudan using satellite remote sensing , 1987 .

[19]  A. Abdel-Monem,et al.  RbSr geochronology and geochemistry of plutonic rocks from the Wadi Shuqub quadrangle, west-central Arabian Shield , 1987 .