Dating a Destruction Layer Without a King List
A citadel mound shows a burnt destruction layer 0.4 m thick containing collapsed mudbrick, carbonized roof beams, and smashed storage jars. Below it, floors contain pottery of a style conventionally dated 1450-1350 BCE. Above it, rebuilding uses a pottery style dated 1300-1200 BCE. Three radiocarbon samples from the burnt beams give calibrated ranges of 1390-1320, 1370-1300, and 1410-1340 BCE (95 percent). A scarab of an Egyptian pharaoh whose reign is disputed between 1350 and 1330 BCE was found in the destruction debris, but it is worn and could be an heirloom. A later king's inscription claims he destroyed the city, but the inscription was carved 200 years after his reign and survives only in a later copy. The team wants a single date for the destruction to match a historical campaign.
1. Combine the radiocarbon, ceramic, and scarab evidence into a defensible date range for the destruction, and identify the single most important caveat.
Read the worked answer
The three radiocarbon ranges overlap between 1370 and 1340 BCE, with the intersection narrowing around 1370-1340. That is the strongest evidence because the samples are short-lived roof beams burnt in the event itself, so they date the destruction closely (allowing for possible old-timber offset).
Ceramics bracket the event: below, 1450-1350; above, 1300-1200. The destruction must fall between the end of the lower style and the start of the upper, i.e. broadly 1350-1300, which is compatible with the radiocarbon intersection.
The scarab is weak evidence. It is worn, could be an heirloom, and its pharaoh's reign is itself disputed (1350-1330). At best it supports a date no earlier than roughly 1350 and no later than the object's circulation, but it cannot pin the event.
Combined judgement: destruction most likely 1370-1330 BCE, centred near 1350.
Most important caveat: old timber. Roof beams may have been felled decades before burning, which would push the true event later than the radiocarbon suggests, potentially into the 1330s-1320s. Reporting the range with this offset acknowledged is essential.
2. The later royal inscription claims the king destroyed the city. Assess how much weight it should carry and what would raise or lower its credibility.
Read the worked answer
The inscription should carry low weight as direct evidence for this destruction, for three reasons. It was carved 200 years after the reign, so it is not contemporary. It survives only as a later copy, adding copying error and possible editorial reshaping. And royal destruction claims are ideological genre pieces: kings routinely claimed victories over cities they besieged, raided, or merely wished to associate themselves with. The claim is not false by default, but it is not independent of the king's need for prestige.
It becomes more credible if: a contemporary inscription or administrative text from the same reign names the city; the destruction date from radiocarbon falls squarely within the king's reign with tight ranges; or destruction layers at several other sites match the same narrow window, suggesting a real campaign.
It becomes less credible if: the radiocarbon centres well outside the reign; the site shows rebuilding by a different polity; or the inscription's language is formulaic and reused from earlier royal inscriptions.
The correct method is to date the event independently and only then ask whether a known campaign fits. Dating the layer to match the king inverts the logic and risks circularity.