| The Bahadur Khel Salt of Eocene is standout amongst the most central geological areas in Kohat plateau.It exists to easy access as well as shows an extensive assortment of geographical structures besides paleontological remnants.It consumes,consequently,be situated properly known as an exhibition hall of geology and fossil science.It speaks to an exposed manuscript of geology with abundantly halite rocks.Every one of the strata is phenomenally presented because of absence of vegetation.The Bahadur Khel salt is,therefore,of international scientific and educational value,and is highly worthy of conservation and preservation.The main methodology has been used to evaluate the fluid inclusion including sampling,thin section observation,XRD,XRF,Raman spectroscopy and Microthermometry.Petrography was done to identify the minerals and type of fluid inclusion,most of inclusions suggests the secondary inclusions.XRD has been performed for bulk analysis of crystalline materials.It is basically used to evaluate the mineralogy,chemical composition and trace minerals within the salt.Whereas X-ray Fluorescence spectroscopy is a fast,routine technique,widely used for determination of detailed elemental composition of materials in various research areas,including geological,environmental,biological and industrial studies.Raman Spectroscopy is used for the evaluation of fluid inclusion and their composition.Microthermometry is used for individual primary liquid inclusions,including,mapping and photographically recording the size,shape and distribution of fluid inclusions and preexisting bubbles within inclusions.Petrographic study reveals that most of the dominate mineral is halite(Nacl).Minerals is well developed and properly preserved.It consist of temperature range from 5.8 to 19 °C,and fluid phase comprises meteoric water with H,O,Na,Cl etc.and Other subordinate minerals are anhydride,gypsum and minor dolomite.XRF data and XRD data shows the chemical composition of the halite.According to XRF data most abundant constituent of the halite is comprising Na,Cl,O,Ca,Mg,Si,Al,Fe,Br,Sr,K,Zn,P,Ni,Pt,and S.XRD shows halite is not entirely pure.The average content of halite in both primary and secondary crystal is94.2% and 92.8% respectively.Minor constituent like calcite,ferro dolomite,ankerite and anhydrite(from XRD data)and Mg,Ca,O,K,Si,Al etc.(from XRF data)indicate that rock exposed to atmosphere and contacted with meteoric water.Most of primary crystal shows the high density as compare to secondary crystal suggested the high saturated and high concentrated fluid.On the basis of all performed experimental analysis it has been concluded that most of the inclusions in Bahadur Khel Salt is secondary inclusions that were developed after deposition and uplift time after tectonic and digenetic effect.The present study handled and selected fluid inclusions,Primary fluid inclusions can be used to obtain a quantitative record of paleoclimate temperatures.The homogenization temperature data represented that Bahadur Khel Area is acceptably consistent,reasonable,and interpretable as paleotemperatures of ancient surface brines.Fluid inclusions in halite have the potential for providing some of the best paleoclimate records available. |
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