Evidence for Element Mobility in Some Metavolcanic Rocks in the Vicinity of Mineralized Areas in the Arabian Shield

A. AL-SHANTI, M. HUSSEIN, O. EL-MAHDY
1989 Journal of King Abdulaziz University-Earth Sciences  
AHSTRMT . Forty-three samples of volcanic rocks were selected from 5 widely spaced mineralized areas within the Hulayfah Group in the Arabian Shield . These samples were analysed for major and minor oxides as well as Nb, Zr, Y, Ti and P . The analyses were plotted on some of the commonly used petrochemical discrimination and variation diagrams in a trial to test the mobility of elements, but not to deduce tectonic selling or magma type . Nh and Y showed the highest mobility. Ti and Zr showed
more » ... atively moderate mobility with Ti being somewhat more mobile. but P showed the least mobility . It is suggested that the partial pressure of carbon dioxide . and whether it is buffered by an external source or not. have a considerable effect on the mobility of these clements during metamorphism and alteration .
doi:10.4197/ear.2-1.7 fatcat:e67lplgcfjabfkb2injyahpsey