This #FridayPaleoart we look at the history of the #interdisciplinaryresearch.
๐๐จ ๐ฒ๐จ๐ฎ ๐ค๐ง๐จ๐ฐ ๐ญ๐ก๐ ๐๐ฌ๐ญ ๐๐๐-๐๐๐ ๐๐๐ญ๐ข๐ง๐ ๐จ๐ง #๐๐๐ฅ๐๐จ๐ฅ๐ข๐ญ๐ก๐ข๐๐๐ซ๐ญ?๐ฌโซ๏ธ๐งช
Cave: #Cougnac cave
Place: Lot, France
Motif: Wounded man, animals and marks
Chrono: Multiphase
๐๐จ ๐ฒ๐จ๐ฎ ๐ค๐ง๐จ๐ฐ ๐ญ๐ก๐ ๐๐ฌ๐ญ ๐๐๐-๐๐๐ ๐๐๐ญ๐ข๐ง๐ ๐จ๐ง #๐๐๐ฅ๐๐จ๐ฅ๐ข๐ญ๐ก๐ข๐๐๐ซ๐ญ?๐ฌโซ๏ธ๐งช
Cave: #Cougnac cave
Place: Lot, France
Motif: Wounded man, animals and marks
Chrono: Multiphase
This pioneer #14CAMSdating was carried out on a sample of pigment from a black punctuation of this wall๐โซ๏ธ. The analysis was executed by H. Valladas, H. Cachier and M. Arnol of #CNRS (Laboratory Gif-sur-Yvette). RESULT: 14290 +-180 BP
The Spectrometric Mass Accelerator (AMS) applied on radiocarbon analysis revolutionized the Archeology (and of the Paleolithic Art study, of course!). This first dating was carried out in #Tandetron accelerator and with only 0.80 mg of datable carbon (sample AFTER pretreatment).
Currently, samples smaller is possible dating (only 0.3-0.00025 grs of pure Carbon are needed - according to #BetaAnalytic).
The amount Carbon (not charcoalโ๏ธ) depends of the pure of sample. A charcoal "more cleanedโ (eg, without organic contamination) will have less reduction of sample๐งช๐ฉโ๐ฌ(less intensive pretreatment will be need). So, the #Anthracology help to select an optimal sample for dating๐ฌ
๐๐ธSEM photo of a paleolithic charcoal contaminate with fungal hyphae (modern Carbon).
The anthracological analysis before dating (especially to avoid dating migrated charcoal in stratigraphy) has been defended since the the 70's of s.XX.
The anthracological analysis before dating (especially to avoid dating migrated charcoal in stratigraphy) has been defended since the the 70's of s.XX.
โ๏ธHowever, it is necessary to insist in making this analysis before dating. Especially, this "essential pretreatment" is still too unusual in #InternalArchaeologicalContexts and in #PaleolithicArt pigments. ๐
In Cougnac cave, the first anthracological study on a pigment from Paleolithic Art also was developed. This was made by the anthracologist J.L.Vernet (University of Montpellier). A sample from female megaceros motif was analyzed๐and identified as Gymnosperm, possibly pine ๐ฒ
The anthracological study does not destroy the sample to be dated or contaminate it, besides it can inform us of possible contaminations that could disturb the dating result.
Therefore, prior to C14 AMS dating,๐ฌ#charcoalanalysis๐ฌ please!!!
Therefore, prior to C14 AMS dating,๐ฌ#charcoalanalysis๐ฌ please!!!
We want to end this post stand out the figure of M.Lorblanchet. A true pioneer #interdisciplinaryresearch of "decorated" caves! Merci!!
๐In this book you can find a compendium of many of his works. We have used this to do this post:
๐In this book you can find a compendium of many of his works. We have used this to do this post:
โ๏ธ Do you want to visit this magic site, no?
โก๏ธ You can do it! (it's open to visits for small groups): grottesdecougnac.com
M. Medina-Alcaide (@MMedinaAlcaide)
End of thread!!!๐ฌ๐ฉโ๐ฌ
โก๏ธ You can do it! (it's open to visits for small groups): grottesdecougnac.com
M. Medina-Alcaide (@MMedinaAlcaide)
End of thread!!!๐ฌ๐ฉโ๐ฌ
โข โข โข
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