Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Granulometric Analysis of Glacial Sediments, Schirmacher Oasis, East Antarctica


Affiliations
1 Department of Geology, SGB Amravati University, Amravati - 444 602, India
2 Ministry of Earth Sciences, Lodhi Road, New Delhi - 110 003, India
     

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Granulometric analysis of nineteen sediment samples has been carried out for their statistical and textural parameters. The samples are collected from the northern and southern margins of Schirmacher Oasis extending below the polar ice sheet and grading to coastal area respectively and main rocky land of Schirmacher including lakes. The analysis shows that most of the sediments are of medium grain size and fall in poor to very poor sorted category.

An attempt has been made to interpret the depositional set-up by plotting the scatter patterns between various textural parameters, including C-M plot and arithmetic log-probability curves. The influence of physical parameters viz. low to high velocity winds, ice and meltwater on sediment characteristics has been discussed.


Keywords

Granulometric Analysis, Glacial Sediments, Textural Parameters, Schirmacher Oasis, East Antarctica.
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  • Granulometric Analysis of Glacial Sediments, Schirmacher Oasis, East Antarctica

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Authors

Ashok K. Srivastava
Department of Geology, SGB Amravati University, Amravati - 444 602, India
Neloy Khare
Ministry of Earth Sciences, Lodhi Road, New Delhi - 110 003, India

Abstract


Granulometric analysis of nineteen sediment samples has been carried out for their statistical and textural parameters. The samples are collected from the northern and southern margins of Schirmacher Oasis extending below the polar ice sheet and grading to coastal area respectively and main rocky land of Schirmacher including lakes. The analysis shows that most of the sediments are of medium grain size and fall in poor to very poor sorted category.

An attempt has been made to interpret the depositional set-up by plotting the scatter patterns between various textural parameters, including C-M plot and arithmetic log-probability curves. The influence of physical parameters viz. low to high velocity winds, ice and meltwater on sediment characteristics has been discussed.


Keywords


Granulometric Analysis, Glacial Sediments, Textural Parameters, Schirmacher Oasis, East Antarctica.

References