I desember 2011 hadde Daily Mail denne artikkelen:
Bracelet reveals amazing craftsman’s skill from 7500BC (so good it couldn’t be bettered today)
A 9,500-year-old bracelet has been analysed using the very latest computers – and the results show that it is so intricate even today’s craftsmen would struggle to improve it.
Researchers from the Institut Français d’Etudes Anatoliennes in Istanbul and Laboratoire de Tribologie et de Dynamiques des Systèmes studied the bracelet’s surface and its micro-topographic features revealing the astounding technical expertise of the maker.
The bracelet is obsidian – which means it’s made from volcanic glass – and the researchers analysis of it sheds new light on Neolithic societies, which remain highly mysterious.
This process revealed that the bracelet – 10cm in diameter – was made and polished using highly specialised manufacturing techniques.
In fact, the surface was polished to a degree equal to that of today’s telescope lenses.
Høyt utviklet samfunn som er utdødd?
Dette er et spørsmål en kan stille både seg selv og andre når det gjelder mange ting som er tatt opp her på bloggen. Jeg har åpnet for to muligheter, at enten er dette “oss”, eller så er det gjort av “dem”. De som lurer på hva jeg mener med “dem”, kan lese om Atacama-skjelettet og langskallene i Sør-Amerika.
Kanskje er de to alternativene å tenke ørlite snevert? Finnes flere muligheter? Jo mer jeg tenker på størrelse, avstand og tid, jo sikrere blir jeg på at vi ikke er i nærheten av å skjønne noe av dette. Ta det siste, tid. Vi ser på det som et lineært fenomen. Noe som kommer fra fortiden, eksisterer (for oss) akkurat nå, før det forsvinner inn i en uendelig eller begrenset framtid.
Hva hvis tiden er sirkulær? Er det oss selv vi går i fotsporene til? Er det vår egen fortid vi hele tiden gjenoppdager?
De som er så heldige å ha tilgang til forskningsmagasinene uten å betale for det, kan lese mer om dette obsidian-armbåndet her:
Da jeg ikke gidder betale 35 dollar for å lese denne publikasjonen, siterer jeg i stedet noe av det jeg leste annet steds:
Researchers from the Institut Français d’Etudes Anatoliennes in Istanbul and the Laboratoire de Tribologie et de Dynamiques des Systèmes have analyzed the oldest obsidian bracelet ever identified, discovered in the 1990s at the site of Aşıklı Höyük, Turkey. Using high-tech methods developed by LTDS to study the bracelet’s surface and its micro-topographic features, the researchers have revealed the astounding technical expertise of craftsmen in the eighth millennium BC. Their skills were highly sophisticated for this period in late prehistory, and on a par with today’s polishing techniques. This work is published in the December 2011 issue of Journal of Archaeological Science, and sheds new light on Neolithic societies, which remain highly mysterious.
Dated to 7500 BC, the obsidian bracelet studied by the researchers is unique. It is the earliest evidence of obsidian working, which only reached its peak in the seventh and sixth millennia BC with the production of all kinds of ornamental objects, including mirrors and vessels. It has a complex shape and a remarkable central annular ridge, and is 10 cm in diameter and 3.3 cm wide. Discovered in 1995 at the exceptional site of Asıklı Höyük in Turkey and displayed ever since at the Aksaray Archeological Museum, the ring was studied in 2009, after Mihriban Özbasaran, Professor at the University of Istanbul’s Department of Prehistory, resumed excavations.
Laurence Astruc, a CNRS researcher and her colleagues analyzed the bracelet using extremely powerful computer technologies developed by LTDS researchers Hassan Zahouani (ENISE) and Roberto Vargiolu (ECL). Developed for industry in order to characterize the ‘orange peel effect’ on painted car bodywork, these methods, known as multi-scale tribological analysis, have been adapted for the study of micro-topographic features on archeological artefacts. They seek to identify every single operation performed on the surface of these objects.
This process has revealed that the bracelet was made using highly specialized manufacturing techniques. The analyses carried out showed that the bracelet was almost perfectly regular. The symmetry of the central annular ridge is extremely precise, to the nearest degree and nearest hundred micrometers.
Dette er jo helt sykt. Mikrometerpresisjon og steinalderen henger liksom ikke helt på greip. Dette knallharde vulkanske glasset er heller ikke noe som hvem som helst kan kaste seg over og tro at man klarer få noe ut av.