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Intan Chalid – ESR 1.

Timescales of fluid mobility during metamorphic devolatilisation by 40Ar/39Ar stepwise crushing of vein minerals

Intan Chalid

Institution: Vrije Universiteit Amsterdam

Primary supervisor: professor dr. J.R. Wijbrans 

Country of origin: Indonesia

Languages: Indonesian and English

Contact email: i.chalid@vu.nl

About me

I am a geochemist with interests in fluid-rock interaction. My research interests mostly deal with fluids and heat from local to regional extent recently. I started studying isotopes and water chemistry in the Japanese thermal springs, groundwaters affected by hot springs, and hydrothermal alterations in the Japanese geothermal energy production in 2015 where the type of waters varies originated by magmatic to meteoric water whilst the types of wells in the geothermal energy also vary from water-dominated to vapor-bearing wells. My current research in the southern Pyrenees is focused on metamorphic fluid history from the deeper-middle-upper crust in which takes a number of distinct episodes during metamorphic transformations of mountain building throughout geochemical approaches.


About the project 

In the broadest sense, the application of my FluidNET project concepts the liberation of volatiles such a water from the volume of the solid rock to be the significant constituent in which a supercritical fluid phase may happen during prograde metamorphism. Here, we try to determine the conditions and the timing of the metamorphism associated with the major geologic events. Whilst the migration of hydrogen and oxygen with OH- ions, alkali ions such as Na and K can easily migrate through quartz atomic structure, therefore, the most commonly mineral that permits recognition of metamorphism is quartz vein minerals than do any other metamorphic minerals. It is therefore considered that quartz vein mineral provides an excellent example of the result from a very small amount of precipitation of large volumes of fluids during deformation processes in the massif Pyrenees region.

Although my primary concern here is to understand the metamorphic fluid history, the application of thermodynamics to chemical reactions, mineralogy and petrology is function of geochemical investigations determined by the different analytical methods currently in use in modern geochemistry such as Mass Spectrometry in argon isotope geology, X-ray fluorescence (XRF), Laser Ablation Inductively Coupled Plasma Emission Mass Spectrometry (LA-ICP-MS), Scanning Electron Microscopy-Energy Dispersive Spectroscopy, Raman spectroscopy, electron microprobe analysis, and petrographic analysis.

Contact:

Institution: Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, the Netherlands

Email: i.chalid@vu.nl

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