Sentences with phrase «copper slag»

The experts reached this conclusion after re-examining the 8,500 - year - old copper slag and analysing the chemical composition of other copper artefacts from the Stone Age settlement of Çatalhöyük in the Near East.

The copper slag was located in layers that dated back to 6,500 years before Christ and was therefore 1,500 years older than the world's earliest evidence of copper smelting.

For a long time a small amount of copper slag from the Neolithic site at Çatalhöyük was thought to be the earliest evidence for pyrometallurgical extraction of copper from ore.

This threw new light on the scientific significance of the copper slag of Çatalhöyük, now putting the earliest known examples of copper extraction from ore around 5,000 BC in Southeast Europe and Iran.

The ongoing archaeology work for Metro C has also revealed the remains — copper slag and ingots, as well as the holes dug for small furnaces — of a sixth - century metallurgical workshop, the largest known in Rome from its time period.

Not exact matches

The slag differs in chemical composition from another artefact from the Stone Age settlement, a bead of folded sheets made of pure copper.

Published today in the Journal of Archaeological Science, the re-examination of a c. 8,500 - year - old by - product from metal smelting, or «slag», from the site of Çatalhöyük presents the conclusive reconstruction of events that led to the firing of a small handful of green copper minerals.

2017 copper, wax, aluminum foil, steel, steel slag, cast bronze, iron 216 x 216 x 96 in.

2017 steel slag, salt, glue, pigment, ink, fiberglass, rubber snakes, copper wire, acorn husks, rocks, dirt 51 x 38 x 4 in.