Hi Veronica,
if recristallization from calcareous solutions took place, this may
indeed cause problems in preservation of carbonized plant remains.
Have you checked various publications by Pearsall and Piperno on
macroremain preservation in the tropics?
Good luck!
Cheers,
Simone
Zitat von "Dr. M Kajale" <[log in to unmask]>:
> Dear Veronica (If I may!),
>
> Is this an open air site, or a cave site? Coastal or inland site ? If this
> Is it a well stratified site,you can try with other contexts from excavated
> portions of the site.
>
> Thanks in anticipation or your response.
>
> Best wishes,
>
> Mukund Kajale
>
> On Tue, Aug 25, 2009 at 11:00 PM, Veronica Lema <[log in to unmask]> wrote:
>
>>
>> Hi to all,
>> My name is Veronica Lema and I am a Ph. archaeologist from Argentina,
>> I´m writing to you because we are developing archaeobotanical investigation
>> in the central eastern area of the country, specifically in a zone which has
>> calcareous soils. Soil formation started in this area ca. 2000 AP over shell
>> banks, formed after Pleistocene marine intrusions. The problem is the total
>> absence of archaeobotanical macroremains (during excavations hearths are
>> recognized as areas of dark grey sediment with very small bits of charcoal
>> which are very fragile), but we were successful in recovering microremains
>> from mortars and ceramic sherds. I thought that calcareous soil wasn´t a
>> problem for dry or charred macrorremains preservation, but it seems to be.
>> The area is quite humid, but not a lot, and macroremains were recovered from
>> excavations in sites near the area with the same climatic regime. ¿Has
>> anyone idea of why is this happening? ¿or could suggest a paper to read? I
>> will be very glad of any clue about this...thanks!
>>
>> ------------------------------
>> ¡Creá carpetas para todos tus correos! ¡Espacio ILIMITADO con el nuevo
>> Hotmail! <http://mail.live.com/>
>>
>
--
PD Dr. Simone Riehl
Institute for Prehistory and Quaternary Ecology
Ruemelinstrasse 23
D-72070 Tuebingen
Germany
Tel. / Fax +49 (0)7071 2978915 / 295717
http://www.urgeschichte.uni-tuebingen.de/index.php?id=132
http://www.cuminum.de/archaeobotany/
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