Petrogenesis of Ophiolite Suites in Borneo Island and Comparisons with the Zambales (Philippines) and Othrys (Greece) Ophiolites: Possible implications on the Genesis of Abiotic Methane
Ophiolites represent remnants of the Earth's Upper Mantle and Oceanic Crust. Knowledge of their geotectonic evolution and petrogenesis are considered as fundamental keys to the reconstruction of the Earth's history and geotectonic evolution, as they comprise huge and important parts of the Earth's interior. Recently, it has been suggested that these rocks are responsible for the production and exhalation of methane of abiotic origin, which is a theme of growing interest. The present study deals with the detailed investigation of the Borneo ophiolite suite, aiming to unravel the complex geological history of Borneo Island with several implications on the geological development of Malaysia. Geological mapping in certain areas of interest in the Sabah region (Pulau Malawali, Kundasang, Ranau, Telupid, Beluran, please see map provided), collection and preparation of specimens, as well as their thorough microscopic investigation, employing polarising and Scanning Electron Microscope techniques, will be performed. Gas emissions from the ophiolite will be analysed, in order to test the hypothesis for the production of abiotic methane. The proposed research aims at: (i) unraveling the genesis and evolution of the Ancient Mantle and Oceanic Crust of the area of Borneo from the acquisition of data during a thorough petrological investigation, and (ii) investigating the role of these rocks in the formation of the unconventional production of abiotic methane.
Application invited for: PhD; MSc