LTDS is "Laboratoire de Tribologie et de Dynamiques des Systèmes".
Digital reconstruction of the bracelet proposed by Mohamed Ben Tkaya (LTDS)
Posted on 12/29/2011 10:36:07 PM PST by SunkenCiv
Researchers have analysed the oldest obsidian bracelet ever identified, discovered in the 1990s at the site of Asikli Höyük, Turkey.
A high level of technical expertise
Using high-tech methods developed by LTDS to study the bracelet's surface and micro-topographic features, the researchers have revealed the astounding technical expertise of craftsmen in the eighth millennium BCE.
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.
Dated to 7500 BCE, the obsidian bracelet studied by the researchers is unique. it is the earliest evidence of this kind 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 measures 10 cm in diameter and 3.3 cm wide.
Discovered in 1995 at the exceptional site of Asikli Höyük in Turkey and displayed ever since at the Aksaray Archaeological Museum, the bracelet was studied in 2009, after Mihriban özbasaran, Professor at the University of istanbul's Department of Prehistory, resumed excavations at the site.
(Excerpt) Read more at pasthorizonspr.com ...
Digital reconstruction of the bracelet proposed by Mohamed Ben Tkaya (LTDS)
similar story, different source:
http://www.physorg.com/news/2011-12-oldest-obsidian-bracelet-reveals-amazing.html
this should be of interest:
http://www.ehow.com/facts_5410635_origin-mirrors.html
[snip] The first man-made mirrors were made out of the volcanic rock obsidian. Some of the oldest obsidian mirrors date to around 6,000 B.C.E. in the Neolithic Age using a dating method called obsidian hydration dating. [/snip]
Grinding it Out: Making a mirror the old-fashioned way
April 2, 2001
by James F. Vedder
http://www.archaeology.org/online/news/mirrors.html
Anatolia is a source of both obsidian and corundum. Corundum (also known as carborundum, or emery) is a grinding and polishing material and although very hard (no. 9 on the Mohs hardness scale in which no. 10 is the highest value), it is easy to work in mineral form. Obsidian objects were among early exports from Anatolia, and they were used for spears, arrowheads, knives, axes, scrapers, and jewelry. It is reasonable to conjecture that mirrors were also exported from there. Conolly suggests the first shaping/grinding of an Anatolian mirror surface was quite coarse; the surface was then polished with a fine-grained material such as silt and buffed with material such as leather. [History of Mirrors Dating Back 8000 Years, ENOCH, JAY M. OD, PhD, FAAO]
/johnny
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| GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach | |
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Thanks Renfield. I couldn't find the supplemental graphic that I wanted to use, but there are others that are fine. |
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I can’t even imagine how it was shaped.
Obsidian shears sharply
Ancient alien technology made it possible. I think I learned that from the history channel.
Astounding.
I think there were civilizations at least as advanced as the ancient Romans BEFORE the last ice age and the ice age drove them into dust of history.
That would be from 120,000 BC, till 12,000 BC. Just watching programs like “life after people” illustrate how little time it takes to wipe all evidence of human civilization away through natural processes. Plus human civs usually start out around rivers near the sea, during the last ice ages those areas could have been developed and then as the ice age ended the sea would have covered them “great flood myth” anyone?
Much of the evidence of human civs before 12,000 BC could be laying under the mud and sediment of river deltas that are now hundreds of feet under ocean waters. We won;t begin discovering this until we can create radar tech that can scan below the ocean and through the sediment at high resolutions.
They keep find more and more evidence of very early civilizations that keep pushing back the clock on what the “earliest human civilization” really was.
Did you happen to read, “Fingerprints of the Gods” by Graham Hitchcock? The whole book is about the possibility of civilizations existing before what is commonly accepted. He went off the rails when he asserted that they had been concentrated on Antarctica, but he has since recanted, and said basically what you did.....which is we can’t see much of the evidence of earlier civilizations because they are all under water after the ice sheets melted. I find myself believing it.
They must have taken a lot of time on each piece. :’)
LOL!
Wow! Thanks, Civ
You knew you would get me to click for this gorgeous obsidian bracelet. ;•} It’s that antique jewelry obsession.
The article neglects to mention that obsidian is a naturally formed material, a form of volcanic glass. It is jet black in color, polishes to a high level of brilliance, and has been used as a gemstone for millennia.
This bracelet us truly magnificent.
Wow! Thanks, Civ
You knew you would get me to click for this gorgeous obsidian bracelet. ;•} It’s that antique jewelry obsession.
The article neglects to mention that obsidian is a naturally formed material, a form of volcanic glass. It is jet black in color, polishes to a high level of brilliance, and has been highly prized as a gemstone for millennia.
This bracelet us truly magnificent.
I wholeheartedly agree.
:’) My pleasure. The nice thing about obsidian art, it will definitely go into your will.
:’) My pleasure. The nice thing about obsidian art, it will definitely go into your will.
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