Stratigraphic archaeology is the method of dating artifacts by examining the layers (strata) in which they were buried, with deeper layers being older. In AP Art History, it's one of the relative dating techniques used to put prehistoric art like cave paintings and megaliths in chronological order.
Stratigraphic archaeology works on a simple idea. As people live in a place over centuries, debris, soil, and structures pile up in layers, like a cake. Dig down and you move back in time. An artifact found in a deeper layer is older than one found above it. This gives archaeologists relative dating, meaning they can say "this came before that" even when they can't pin down an exact year.
For AP Art History, this matters most in Unit 1 (Global Prehistory). Nobody signed or dated the Lascaux cave paintings or the Jade Cong. So how do we know the running horned woman at Tassili n'Ajjer is older than some other rock art nearby? Often, it's stratigraphy. The layer an object sits in, plus what else was found in that layer, tells archaeologists where it belongs in the sequence of human activity at the site. Pair stratigraphy with absolute methods like carbon-14 dating, and you get both the order of events and actual dates.
Stratigraphic archaeology lives in Unit 1, Global Prehistory, where the central problem is interpreting art with no written records. The AP course expects you to explain how we know what we know about prehistoric works, and dating methods are the backbone of that. When you discuss the context of works like the Apollo 11 stones or Stonehenge, you're leaning on archaeological evidence, and stratigraphy is a big part of how that evidence gets a timeline. It also connects to the broader AP skill of contextual analysis. An object's meaning depends partly on where and with what it was found, and stratigraphy is literally the science of "where it was found." Once an artifact is yanked out of its layer without documentation, that context is gone forever, which is why looted objects are so hard to interpret.
Keep studying AP Art History Unit 1
Carbon-14 Dating (Unit 1)
These two methods are a team. Stratigraphy tells you the order of layers, and carbon-14 dating gives an actual age for organic material (bone, charcoal, wood) inside a layer. Date one layer with carbon-14 and you can anchor the whole stack in real time.
Excavation (Unit 1)
Stratigraphy only works if excavation is done carefully. Archaeologists dig layer by layer and record exactly where every object sits, because the moment an artifact leaves its stratum undocumented, its dating evidence is destroyed.
Seriation (Unit 1)
Seriation is the other big relative dating method. Instead of reading soil layers, it tracks how styles of objects (especially ceramics) change over time. Both methods answer "older or newer?" without giving exact dates, and they often confirm each other.
Contextual Analysis (All Units)
Stratigraphy is contextual analysis in its rawest form. The course constantly asks you to interpret works through context, and for prehistoric art, the find spot and its layer ARE the context. There's no artist statement to fall back on.
You won't be asked to perform stratigraphic analysis on the exam, but the term can appear in multiple-choice questions about how prehistoric works are dated and interpreted. The classic move is a question asking which method gives relative dates (stratigraphy, seriation) versus absolute dates (carbon-14). On free-response questions about Unit 1 works, mentioning that our knowledge comes from archaeological evidence like stratigraphic excavation strengthens a contextual point, especially when the prompt asks how scholars interpret a work made before writing existed. No released FRQ has required the term verbatim, so treat it as supporting vocabulary that makes your prehistory answers sound informed rather than vague.
Stratigraphic archaeology gives RELATIVE dates. It tells you an object is older or newer than another based on which layer it was buried in, but not how old in years. Carbon-14 dating gives ABSOLUTE dates by measuring radioactive decay in organic material, producing an actual age like "about 17,000 years old." Stratigraphy works on any buried object; carbon-14 only works on things that were once alive. On a multiple-choice question, "relative" points to stratigraphy or seriation, while "absolute" points to carbon-14.
Stratigraphic archaeology dates artifacts by their burial layers, with deeper layers being older than the ones above them.
It is a relative dating method, meaning it establishes the order of objects in time rather than their exact age in years.
In AP Art History, stratigraphy matters most in Unit 1, because prehistoric art has no written records and depends entirely on archaeological evidence for dating.
Stratigraphy pairs with carbon-14 dating, which can attach an absolute age to a layer that stratigraphy has already placed in sequence.
An artifact removed from its layer without documentation loses its stratigraphic context, which is why careful excavation is essential to interpreting prehistoric works.
It's the method of dating artifacts based on the soil layers (strata) they were found in, where deeper layers are older. It's how archaeologists put prehistoric works in Unit 1, like rock art and megaliths, into a timeline.
No. Stratigraphy is a relative dating method, so it only tells you that one object is older or newer than another. For actual ages in years, archaeologists use absolute methods like carbon-14 dating on organic material found in the layers.
Both are relative dating methods, but stratigraphy reads physical layers of earth at a site, while seriation tracks gradual changes in object styles, like how pottery shapes evolve over time. Stratigraphy is about where things sit; seriation is about how things look.
Prehistoric works like the Lascaux cave paintings were made before writing existed, so there are no dates, names, or records. Stratigraphy and related archaeological methods are the main way scholars figure out when these works were made and what was happening around them.
Yes, as supporting vocabulary for Unit 1. You should be able to identify it as a relative dating method and distinguish it from absolute methods like carbon-14 dating, since multiple-choice questions can test how scholars date and interpret prehistoric art.