Submitted on: 15 September 2016.
Revised on: 20 October 2016.
Accepted on: 23 November 2016.
___________________E&G Quaternary Science Journal
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Submitted on: 30 January 2017.
Revised on: 28 April 2017.
Accepted on: 10 June 2017.
___________________E&G Quaternary Science Journal
Submitted on: 29 June 2020.
Revised on: 01 October 2020.
Accepted on: 04 November 2020.
___________________E&G Quaternary Science Journal
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