Selective concentration and enumeration of tephra shards from lake sediment cores

This paper describes a technique for the enumeration of tephra shards from lake sediment cores whereby approximately 85% of unwanted sediment fractions (organic matter, biogenic silica, carbonates) are removed by selective stepwise chemical attack The order of 100 samples can be prepared simultaneou...

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Bibliographic Details
Main Authors: Rose, NL, Golding, PNE, Battarbee, RW
Format: Article in Journal/Newspaper
Language:unknown
Published: EDWARD ARNOLD PUBL LTD 1996
Subjects:
tephra
tephrochronology
lake sediments
preparation
pretreatment
extraction
HISTORY
SCOTLAND
ICELAND
NORTH
ASH
Iceland
Online Access:http://discovery.ucl.ac.uk/133011/
Description
Summary:This paper describes a technique for the enumeration of tephra shards from lake sediment cores whereby approximately 85% of unwanted sediment fractions (organic matter, biogenic silica, carbonates) are removed by selective stepwise chemical attack The order of 100 samples can be prepared simultaneously in a modest-sized water-bath and the recovery rate of the technique is greater than 90%. The procedure is applicable to all lake sediment types.

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