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Teotihuacan chronology is mainly based on ceramic typology and stratigraphic
data. The city's history is basically divided into six phases; Patlachique,
Tzacualli, Miccaotli, Tlamimilolpa, Xolalpan, and Metepec, as shown in this
chart. Some phases are well correlated with Carbon 14 dating, while others are
still weakly defined with absolute dates. The beginning of the city is still
obscure in terms of absolute date. The construction of major monuments in the
city seems to have been concluded by the end of Miccaotli or the beginning of
the Early Tlamimilolpa phase (about AD 200). The city seems to have flourished
in the following phases (Late Tlamimilolpa, Xolalpan) until the cities rather
sudden collapse during the Metepec phase.
The chronology chart presented here was made by George Cowgill of ASU,
who integrated new ceramic analyses and information from C14 analyses One
of the main difference between this and previous chronology tables is that
the end of the last ceramic phase, Metepec, namely the collapse of the metropolis,
is now believed to have been about AD 600-650, rather than 750 (Cowgill
1996).
