A researcher from the University of Missouri and colleagues employed geochemical analysis on copper objects to uncover centuries of previously unknown connections within the region. According to a University of Missouri researcher and his colleagues, chemical and isotopic analysis of copper artifac
Jay Stephens collects samples of copper ore from a mine in Africa. Credit: Jay Stephens
“Over the past 20 to 30 years, most archaeologists have framed the archaeological record of southern Africa in a global way with a major focus on its connection to imports coming from the Indian Ocean,” he said. “But it’s also important to recognize the interconnected relationships that existed among the many groups of people living in southern Africa.
Rutendo Komborayi helps gather samples from the copper artifacts at the Museum of Human Sciences in Harare, Zimbabwe. Credit: Jay Stephens “By looking at their changes in shape and morphology over time, we can pair those changes with how technology changed over time,” he said. “This often comes from observing the decorative features produced from the cast object or mold, or other surface attributes found on these objects.”Gathering scientific evidence
“Unfortunately, large open pit mines have destroyed a lot of the archaeological sites and broader cultural landscapes around these geological deposits,” he said. “This makes it a challenge to reconstruct the history related to these mines. It’s a concerning development, especially with the global push toward more electric vehicles which use minerals like copper and cobalt found in the Copperbelt.”
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