9 and 10 Flashcards
relative dating
Relative dating refers to
making chronological
sequences without
recourse to a fixed time
scale
Absolute dating
Absolute dating refers to
determining age with
reference to a specific
time scale.
Dating conventions
BC / AD = “before Christ” and “anno domini”
BCE / CE = “before the Common (Current) Era” and Common Era
BP = before present (the “present” is always 1950)
ka (or kya) = “kilo annum” = thousand years
bc (or bp) = uncalibrated radiocarbon dates
cal BC, cal AD, cal BP = calibrated radiocarbon dates
Terminus post quem
Terminus post quem refers to the date after which an artifact or
feature must have been deposited
Terminus ante quem
Terminus ante quem refers to the date before which an artifact
or feature must have been deposited
X 1
Mount St. Helen’s 1980
ways in which archaeologists can determine
relative dates for artifacts, sites and cultures.
- stratigraphy – the Law of Superposition = in general, deposits
physically on top of a section are the youngest and those at the
bottom are oldest. - seriation – styles change through time
- Environmental sequences- changes in the climate through time
Seriation
Seriation is a technique of relative ordering of artifacts,
occupational layers or sites based on the idea that styles
change through time.
Stylistic seriation
Stylistic seriation is ordering according to similarity in
style
* not all archaeological material can be easily
ordered
Frequency seriation
Frequency seriation is the
ordering of archaeological
sites, layers within a site or
materials based on the
frequency of the artifacts
preserved in different time
periods.
Environmental sequences
Environmental sequences are created based on changes in the
Earths climate over time