Contribution to the petrochemistry and geochemistry of some Quaternary basaltic rocks (Northern and Southern Yemen)

Petrochemical an d geochemical characteristics of some basaltic rocks from Sirwah-Marib and Dhamar-Rad' a volcanic fields (Northern Yemen) as well as Shuqr a volcanic field (Southern Yemen), all of Quaternary age are presented. Th e relation of majo r elements together with other petrochemical indices and normative minerals have been discussed and the chemical characterization of the examined basaltic rocks is elucidated. Th e distribution and behaviour of selected trace elements in the examined rocks are also studied