Deep and High-temperature Hydrothermal Circulation in the Oman Ophiolite--Petrological and Isotopic Evidence |
| |
| Authors: | BOSCH D; JAMAIS M; BOUDIER F; NICOLAS A; DAUTRIA J-M; AGRINIER P |
| |
| Institution: | 1 LABORATOIRE DE TECTONOPHYSIQUE, UMR 5568 CNRS/UM2, UNIVERSITÉ MONTPELLIER II, PL. EUGÉNE BATAILLON, 34095 MONTPELLIER CEDEX 5, FRANCE
2 LABORATOIRE DE GÉOCHIMIE DES ISOTOPES STABLES, IPG-PARIS VII, 4 PLACE JUSSIEU, F-75252 PARIS CEDEX 05, FRANCE |
| |
| Abstract: | A systematic search for evidence of high-temperature hydrousalteration within the gabbros of the Samail ophiolite (Oman)shows that most of the gabbros have been affected by successivestages of alteration, starting above 975°C and ending below500°C. Sr and O isotopic analyses provide constraints onthe nature and origin of the fluids associated with these alterationevents. Massive gabbros, dykes and veins and their associatedminerals depart from mid-ocean ridge basalt (MORB)-source magmasignatures (87Sr/86Sr >0·7032 and depleted |
| |
| Keywords: | : hydrothermal systems Oman ophiolite Sr and O isotopes gabbros and massive dykes |
| 本文献已被 Oxford 等数据库收录！ |
|
