How archaeologists actually know what they claim to know
Field cards on this site cite dates, layers, and identifications without explaining the methods behind them. Here's the short version of each — so the claims read as checkable, not just asserted.
Tell
An artificial mound built up over centuries or millennia as generations rebuilt on the ruins of the last settlement, each layer burying the one before. "Tell Balata," "Tel Rumeida," "Tell el-Dab'a" — the word itself signals a long-occupied site, and it's where this project's name comes from: a tell is literally a place that tells you its own history, if you read the layers correctly.
Stratigraphy
The basic logic of digging: lower layers are older than the layers above them, unless something has disturbed the sequence (a pit dug down from a later period, erosion, looting). Archaeologists record exactly which layer — or "stratum" — every object comes from, because an object's date is really a claim about its layer's date, not about the object in isolation.
Radiocarbon (C-14) dating
Organic material — seeds, charcoal, bone — contains a radioactive carbon isotope that decays at a known rate after the organism dies. Measuring how much is left gives an age estimate, usually expressed as a range (e.g., "1950–1880 BC") rather than a single year, because the method has built-in uncertainty and needs calibration against known reference data.
Pottery seriation
Pottery styles change in recognizable, dateable ways over time — shape, decoration, manufacturing technique. Because broken pottery survives almost everywhere and in huge quantities, comparing pottery styles across sites is one of the most common ways archaeologists assign rough dates to a layer, even without organic material to carbon-date.
Epigraphy & cuneiform dating
Inscribed tablets and inscriptions can sometimes be dated directly — a letter mentioning a known king, a dated business contract — which makes archives like Mari valuable beyond their content: they anchor an entire layer of a site to a fairly precise span of years, and by extension date the customs and names recorded inside them.
Identification vs. excavation
"Identifying" a site (saying "this tell is biblical Shechem") is a separate claim from excavating it. Identification usually rests on a combination of geography matching ancient descriptions, place-names surviving in modern Arabic or Hebrew toponyms, and inscriptions found on-site naming the place. Some identifications are nearly universally accepted (Shechem/Tell Balata); others are genuinely contested (Ur).
Minimalism vs. maximalism
Shorthand for two poles in biblical archaeology. "Maximalist" approaches treat the biblical text as a broadly reliable historical source unless directly contradicted by evidence. "Minimalist" approaches treat it as a much later literary and theological composition, historically reliable only where independently corroborated. Most working scholars today sit somewhere between the two poles rather than at either extreme — which is why field cards on this site try to show both the supporting case and the pushback, rather than picking a camp.
The other markers on chapter pages
Two further annotation types appear on chapter pages, separate from the evidence tiers: italic, dotted-underline word studies trace a word back to its Hebrew (or, where relevant, Egyptian loanword) origin and show how the Septuagint rendered it in Greek. And each chapter has boxed notes on what the Dead Sea Scrolls and the Quran do or don't say about it — including, honestly, the chapters where neither has anything to add.
None of this makes archaeology infallible — dates get revised, identifications get overturned, and arguments described here as settled may not stay that way. That's also why every field card links back to its sources: so you can follow the argument past where we stopped.