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The enigma of Bronze Age tin


The origin of the tin used in the Bronze Age has long been one of the greatest enigmas in archaeological research. Now researchers from Heidelberg University and the Curt Engelhorn Centre for Archaeometry in Mannheim have solved part of the puzzle.

The enigma of Bronze Age tin
Some of the studied tin ingots from the sea off the coast of Israel (approx. 1300-1200 BCE)
[Credit: Ehud Galili]
Using methods of the natural sciences, they examined the tin from the second millennium BCE found at archaeological sites in Israel, Turkey, and Greece. They were able to proof that this tin in form of ingots does not come from Central Asia, as previously assumed, but from tin deposits in Europe.

The findings are proof that even in the Bronze Age complex and far-reaching trade routes must have existed between Europe and the Eastern Mediterranean. Highly appreciated raw materials like tin as well as amber, glass, and copper were the driving forces of this early international trade network.


Bronze, an alloy of copper and tin, was already being produced in the Middle East, Anatolia, and the Aegean in the late fourth and third millennia BCE. Knowledge on its production spread quickly across wide swaths of the Old World.

"Bronze was used to make weapons, jewellery, and all types of daily objects, justifiably bequeathing its name to an entire epoch. The origin of tin has long been an enigma in archaeological research", explains Prof. Dr Ernst Pernicka, who until his retirement worked at both the Institute for Earth Sciences of Heidelberg University as well as the Curt Engelhorn Centre for Archaeometry.

The enigma of Bronze Age tin
Tin deposits on the Eurasian continent and distribution of tin finds in the area studied dating from 2500-1000 BCE.
The arrow does not indicate the actual trade route but merely illustrates the assumed origin of the Israeli
tin based on the data [Credit: Berger et al. 2019 (Prepared by Daniel Berger)]
"Tin objects and deposits are rare in Europe and Asia. The Eastern Mediterranean region, where some of the objects we studied originated, had practically none of its own deposits. So the raw material in this region must have been imported", explained the researcher.


Metals traded in ingot form are particularly valuable for research because questions of origin can be targeted specifically. Using lead and tin isotope data as well as trace element analysis, the Heidelberg-Mannheim research team led by Prof. Pernicka and Dr Daniel Berger examined the tin ingots found in Turkey, Israel, and Greece. This allowed them to verify that this tin really did derive from tin deposits in Europe. The tin artefacts from Israel, for example, largely match tin from Cornwall and Devon (Great Britain).

"These results specifically identify the origin of tin metal for the first time and therefore give rise to new insights and questions for archaeological research", adds Dr Berger, who conducts research at the Curt Engelhorn Centre for Archaeometry.

The findings were published in the journal PLoS ONE.

Source: Heidelberg University [September 13, 2019]

TANN

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3 comments :

  1. 'Using methods of the natural sciences'
    Could you be a bit more explicit about this? Do you mean isotope analysis?

    ReplyDelete
    Replies
    1. Interesting article about the bronze age ingots check out our tin & copper ingots all found in Devon, www.swmag.org

      Delete
  2. Afghanistan is closer and on established trade routes. The coincident trade in Lapis Lazuli which we are much more certain came from the East would seems to defy the logic of choosing a land-sea-land-sea route over an entirely land route. Also given the primitive nature of sailing at the time, it would seem much riskier to make bronze in Asia than importing the copper into France, which has known tin deposits. Also how do we know the tin ingots, ostensibly from the UK, are the same materials used in third millennium bronze? I would rather see an analysis of the bronze than the unused tin. As the bronze age collapse took hold metal makers had to find new sources of tin. Perhaps that is when British tin started to show up? After the eastern sources fell under the control of rulers hostile to the existing order.

    ReplyDelete


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