Abstract This study investigated the relative distribution of sand-separating minerals and effect sedimentary climatic conditions on their in some soils from northern southern Iraq. The samples were collected four Iraqi governorates: Erbil (included areas Shaqlawa, Soran, Juman), Sulaymaniyah Dokan, Sayed Sadeq, Halabja), Maysan Al-Kahla, Ali Al-Sharqi, Awasha, Kumit, Al-Gharbi, Al-Tayyib), Was...

Trace element partitioning between coesite and hydrous silicate melt has been investigated at 5 GPa 1500−1750°C. High-P experiments successfully produced large crystals in equilibrium with pools (plus kyanite corundum some cases). Scanning electron microscopy micro-Raman spectroscopy were employed to characterize the phases textures. Wavelength-dispersive microprobe analyses performed quantify ...

ABSTRACT This paper presents and discusses the results of phase diagram (Perple_X) diffusion modelling (CZGM, or Compositional Zoning its Modification by diffusion) to constrain P–T path metamorphism. The approach is based on best fits between zoning profile in measured garnet that obtained intersections isopleths calculated using whole rock bulk composition. model was applied garnets natural r...

The mechanisms of earthquake rupture in lower continental crust, below the usual frictional-viscous transition, remain uncertain. In addressing this problem, study pseudotachylyte (quenched frictional melt produced during seismic fault slip) and related structures from deeply exhumed rocks can provide direct observational constraints. A felsic granulite Musgrave Ranges (central Australia) excep...

The activity coefficient of aqueous silica was determined at 800 C and 12 kbar by measuring the concentration of total dissolved aqueous silica (SiO2(t)) in H2O in equilibrium with four buffering mineral assemblages: quartz (Q), kyanite–corundum (KC), enstatite–forsterite (EF), and forsterite–rutile–geikielite (FRG). SiO2(t) concentrations were determined by reversed equilibration of synthetic ...

The purpose of the study was to investigate the mineralogical and Heavy Metals (HMs) present in the granite mining soils in Chimakurthy, India. The mineral exploration of mining soils were identified by X-Ray Diffractometer (XRD) pattern analysis. However, the morphological features and quantitative HMs were detected by Scanning Electron Microscopy/Energy Dispersed Spectroscopy (SEM/...

INTRODUCTION Experimental studies were carried out to evaluate phase relations involving titanite–F–Al-titanite solid solution in the system CaSiO3– Geological background Al2SiO5–TiO2–CaF2. The experiments were conducted at Titanite is a common accessory mineral in mafic, pelitic 900–1000°C and 1·1–4·0 GPa. The average F/Al ratio in and granitic rocks from many geological environments titanite ...