charcoal_methods {GCD}

Extraction methods

Description

Charcoal extractions methods present in the database

Format

A data frame with 13 observations on the following 3 variables.

ID_METHOD

a factor with levels ACID CPRO GRAV HNPK HVLQ IMAG NOTK OPPF OTHE POLS SIEV SIPO THSL

METHOD

a factor with levels Acidification of sample using gas chromatography to measure elemental carbon (Verardo etal 1990) charcoal part Ided as opaque phytoclasts/pyrofusinite in palynofacies anlaysis Charcoal part. Identified in thin slides (soil micromorphology) Charcoal particles identified by imaging software Charcoal separated by heavy liquid preparation Cumulative probability (95% confidence interval) alluvial soil charcoal GRAVIMETRIC chemical assay (Winkler method) Hand picked charcoal from soil samples Not known Other Pollen slide Sieved Sieved + Pollslide

METH_CODE

a numeric vector

Examples

data(charcoal_methods)
## maybe str(charcoal_methods) ; plot(charcoal_methods) ...