[Terrapreta] Early Terra Preta Production

[Robert Klein]

Hi

The persistence of charcoal is ample evidence that charcoal resists any form of chemical weathering which makes sense but needed to be proved.  Terra preta proves it.  It is not resistant to mechanical weathering, however,and the type of corn char that we are proposing would start of been very fine.  The remaining question is whether any particles large enough to show cell structure would survive.  It is very fragile stuff.

The pottery shards may do some magic, but I think that will be a needle in a haystack, as the clay would be worked on the river bank and sun dried there.

regards

bob

----- Original Message ----
From: Gerald Van Koeverden <vnkvrdn at yahoo.ca>
To: Greg and April <gregandapril at earthlink.net>
Cc: Terra Preta <terrapreta at bioenergylists.org>
Sent: Tuesday, January 8, 2008 6:36:58 PM
Subject: Re: [Terrapreta] Early Terra Preta Production


  Nobody would bother hiring a soil forensics scientist who has to  
depend on finding perfect specimens encased in ceramics or preserved  
in amber in order to make some deductions...

On 8-Jan-08, at 7:13 PM, Greg and April wrote:

> A fundamental problem with this, is the fact that original TP  
> sample is
> hundreds ( perhaps a couple of thousand ) years old, and is going  
> to be
> weathered to the Nth degree.
>
> We can make some base line estimates, but, unless a piece of char  
> is found
> encased in a sample of pottery we may never really know.
>
> Greg H.
>
>
> ----- Original Message -----
> From: "AJH" <list at sylva.icuklive.co.uk>
> To: "terra pretta group" <terrapreta at bioenergylists.org>
> Sent: Tuesday, January 08, 2008 16:26
> Subject: Re: [Terrapreta] Early Terra Preta Production
>
>
>> On Tue, 8 Jan 2008 15:00:53 -0800 (PST), Robert Klein wrote:
>>
>>> does someone have good samples of terra preta?.
>>
>> This seems rather fundamental, without being able to analyse the
>> original how can we mimic it?
>>
>> AJH
>>
>>
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