Un « point chaud » sous le système du Rift syrien : données pétrologiques complémentaires sur les enclaves du volcanisme récent |
| |
Authors: | Ahmad Bilal Fatina Sheleh |
| |
Affiliation: | Département de géologie, université de Damas, BP 9487, Damas, Syrie |
| |
Abstract: | Ultrabasic xenoliths (pyroxenites, lherzolites, harzburgites) in recent (Neogene–Quaternary) volcanoes have been studied in three localities within Syria: Jubates (North), Mhailbeh (Center), Tel Thannoun (South). P–T conditions of mineral equilibration have been estimated by pyroxene thermometry (temperature) and maximum CO2 density in primary inclusions (minimum pressure). Pyroxenites equilibrate at significantly higher conditions (T about 1200 °C, P>15 kbar) than lherzolites and harzburgites (900<T<1100 °C, P between 10 and 15 kbar). All are within the spinel lherzolite field, whereas Cretaceous xenoliths originate within the garnet lherzolite field. To cite this article: A. Bilal, F. Sheleh, C. R. Geoscience 336 (2004). |
| |
Keywords: | xénolithes thermométrie des pyroxènes inclusions carboniques Syrie xenoliths pyroxene thermometry Syria |
本文献已被 ScienceDirect 等数据库收录! |
|