@article {10.3844/ajassp.2007.491.495,
article_type = {journal},
title = {Petrology and Origin of Ultramfic Xenoliths from North Eastern Jordan Volcanoes},
author = {Al-Fugha, Hassan and AL-Amaireh, Mazen},
volume = {4},
year = {2007},
month = {Jul},
pages = {491-495},
doi = {10.3844/ajassp.2007.491.495},
url = {https://thescipub.com/abstract/ajassp.2007.491.495},
abstract = {The distribution of major, minor and trace elements in the Cenozoic alkali basalt from north-eastern Jordan indicates a homogeneous lava flow from a mantle source. These basaltic rocks contain abundant upper mantle xenoliths (spinal lherzolite, harzburgile and olivine- websterite). Theses xenoliths contain olivine, orthopyroxne, clinoporoxene and a few amounts of spinal. Their mineral assemblages, chemistry, texture and major elements abundances indicate they were derived and equilibrated under upper mantle conditions within temperature range for 970-1090°C. Pressure estimates based on the spinal lherzolite stability field restrict the xenoliths source depth to around 65 km. The concentrations of incompatible trace elements (Ba, Rb and Sr.) imply a derivation from ultramafic predictive source from the upper mantle with low degree of melting (},
journal = {American Journal of Applied Sciences},
publisher = {Science Publications}
}