Ashok Shaw

8 Questions 11 Answers 0 Followers

Questions related from Ashok Shaw

What is the alternative method to centrifugation to remove acid residues from sediments during carbonate removal process?

I am removing carbonates from clay and sand samples. So, I treat the sediments with H2O2. I need to wash the sediments to remove acid residues. I am thinking of heating the sediments with...

07 December 2019 5,206 6 View

How to differentiate aeolian and fluvial silt collected from core samples based on visual analysis?

I would like to know the fast and easiest way to differentiate aeolian and fluvial silt by looking at the samples itself.

28 May 2019 8,452 9 View

How to obtain Clay % from Fine content (silt+clay) % using empirical formula?

Dear all, I have calculated Fine content (Silt+Clay), Liquid Limit, Plastic Limit, Plasticity Index, Mean grain size, SPT value for soil samples. I need to obtain Clay % for my study. Kindly...

14 January 2018 2,613 8 View

What are the best indicative minerals for Provenance & Paleoclimatic interpretation in modern fluvial unconsolidated sediments?

Dear all, I have done XRD analyses of modern fluvial unconsolidated sediments (soil- clay, silt and sand) to identify the mineralogy and their proportions. I require to select the best minerals...

07 November 2017 4,661 8 View

What are the reasons in getting different Spectral Gamma Ray Log value in Flood Plain clayey deposits ?

There is a significant variation in gamma counts of borehole sediments collected in fluvial environments. The sediments belong to clayey Flood Plain deposits without any sandy sediments. This may...

02 August 2017 9,016 8 View

How do I determine Formation Resistivity Factor (F), Porosity, permeability & Hydraulic conductivity from SP, Gamma & Resistivity Log data?

I have SP, Gamma and Resistivity (both lateral and N16-N64) logs along with Electrical Conductivity value of the water sample of the area (collected through tube well). I have calculated the...

07 May 2017 1,292 4 View

What is the best and easiest way to remove Carbonates from Unconsolidated fluvial sediments before XRF analysis?

Dear all, The fluvial sediments are highly enriched in Carbonates due to the presence of calcrete nodules (Kankars). It is thereby giving higher percentage of CaO in XRF results which in turn is...

11 April 2017 3,501 9 View

What is the correct way to calculate weathering indices (CIA, WIP, PIA, CIW) of unconsolidated fluvial sediments?

Dear all, I have done XRF analysis of unconsolidated fluvial sediment samples and found that CaO wt% is much more higher. I have calculated the weathering indices as per the formula given in Excel...

03 April 2017 3,425 9 View