Role of H2O and CO2 in Silicate melt
H2O and CO2 are the two most important components of fluids in the upper mantle and crust, and their solubilities […]
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GEO-ARTICLES
Stages of Diagenesis of Sandstone
On the basis of mineral replacement and intergrowths, four oxide series are recognized among the sandstones – Stages of diagenesis
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Ionic Substitution in Minerals/ Crystals
Rules of substitution Terminology related to partitioned between the solid & liquid phase Distribution coefficients and Geothermometers Distribution coefficient (D)
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Fick, Roult and Henry’s law in petrogenesis
Fick’s Law of Diffusion in Igneous Petrology Fick’s law describes the movement of elements and ions due to concentration gradients,
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Mesozoic of SPITI
Three major cycles of deposition have been found in the sedimentary records of the Mesozoic formations of the Spiti Basin.
Magnetostratigraphy
Magnetostratigraphy is based on the polarity of the earth’s magnetic field as it is preserved in the sediments at the
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Biostratigraphy
Biostratigraphy deals with the classification and correlation of rock strata based on their fossil contents. Fossils help in assigning relative
Paleozoic of Spiti
The Continuous Paleozoic succession is beautifully exposed in the area of Spiti valley. A rich collection of fossils reported from
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Chronostratigraphy
Any natural phenomena that obey a definite law of flow rate can be used to mark off certain intervals of
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Lithostratigraphy
We can classify the layered rock sequences primarily on the basis of their lithological characters. This scheme of classification is