Articles written in Journal of Earth System Science
Volume 128 Issue 8 December 2019 Article ID 0213 Research Article
Grain-scale structures of the granitoid rocks from the north-western part of the Bundelkhand craton, central India are analysed with the aid of an optical microscope and electron probe micro analyser. Although field-based studies and quick microscopic observations suggest an overall porphyritic texture ofthe Bundelkhand granitoid, detailed microstructural observations reveal a significant deviation from the first-order igneous porphyritic texture. Here, we show that the Bundelkhand granitoid has three distinct grain-scale structures: (i) original pristine igneous structures, (ii) ductile deformation-related structures, and (iii) brittle fracturing-related structures. Based on microstructural evidences, we argue that the deformation-induced structures (both brittle and ductile) are not restricted to solid state, rather thesestructures initiated in the sub-magmatic stage and nucleated in partially crystallised magma during the magmatic to sub-magmatic event of the crystallisation history.
Volume 130 All articles Published: 20 July 2021 Article ID 0140 Brief Communication
A protocol is presented to perform bulk magnetic susceptibility (BMS) analysis of simulated seawater/saline water using MFK2-FA Multi-Function Kappabridge instrument at Laboratory for Analyses of Magnetic and Petrofabric (LAMP), BHU to obtain a correlation between BMS and hydrogeological data such as salinity and conductivity. This
$\bullet$ Protocol is developed for Saline water intrusion studies using magnetic susceptibility measurements.
$\bullet$ Magnetic susceptibility, salinity and conductivity was measured for simulated and field samples.
$\bullet$ Inverse relationship observed between magnetic susceptibility w.r.t. salinity and conductivity.
$\bullet$ High frequency magnetic susceptibility provides better results for gradual increase in salinity.
Volume 130, 2021
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