Quote:
Originally Posted by Michaelangelica
Sorry could you give a page reference for that?
My understanding was the charcoal was very fine in ADE,Terra preta?
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Teixera & Martins, p271 "These horizons are identified by the dark matrix colours of the top layers, and often by the presence of potsherds, lithic artefacts and charcoal pieces"
Hecht, p360-1, describes present day debris disposal which would result gradual accumulation of char of all sizes, from hearth debris, "burn" middens, and occasional burns of the larger spoil heaps behind houses to deter dogs and vermin.
Your understanding may result from the way soil analysts classify "fractions". The "gravel" fraction is particles above 2mm, while the "soil" fraction is particles below 2mm. You rarely see analysis of gravel fractions, and this seems to be true of the TP literature. The TP soil fraction would contain fines (the powder you get when char is produced) and pieces crushed over the centuries by burial. I guess the latter would predominate.
M
