In a 1912 treatise on early maritime trade networks in the western Mediterranean, historian Samuel Radcliffe examined lead isotope ratios in bronze ingots recovered from shipwreck sites near Sardinia. Radcliffe demonstrated that while the majority of the copper used in the ingots originated from Cypriot mines, the tin component was consistently derived from deposits in the Iberian Peninsula. Previous scholars had hypothesized that western Mediterranean bronze production during this period relied exclusively on local metal sources or overland trade routes through central Europe. Radcliffe's findings contradicted this assumption by establishing that maritime supply chains for tin extended across long distances prior to the first millennium BCE. Furthermore, Radcliffe observed that bronze items fabricated in coastal Sardinian settlements exhibited a distinct proportion of trace arsenic compared to those produced in inland workshops, indicating that coastal smiths utilized a specific refining technique designed to increase alloy hardness for maritime tools.
According to the passage, Radcliffe's analysis of the bronze ingots revealed which of the following details regarding their constituent metals?
- AThe copper component of the ingots was primarily extracted from local mines in Sardinia.
- The tin used in the ingots was consistently sourced from mineral deposits in the Iberian Peninsula.Cevap
- CCoastal Sardinian workshops imported pre-refined bronze ingots directly from central European overland traders.
- DTrace amounts of arsenic were present in identical proportions in both coastal and inland bronze artifacts.
- ELong-distance maritime trade supply chains for metals were established only after the first millennium BCE.