Introduction | Material Analysis |
Geochronology of A'asu
| Conclusion |
An excavation unit in a house floor revealed a fairly
recent occupation and a sequence of house platform
building. A prehistoric occupation beneath the house was
at least 740 years old at 2 meters deep.
- That A’asu has a prehistoric, aceramic component
dating at least to about 1300 A.D.
- There may be a deeper, older prehistoric component
- If A’asu is representative of alluvial valleys on
the northwestern shores of Tutuila then deposition and
preservation of stratified archaeological sites is
- Paleoshoreline indicators near A’asu, especially
raised reef, indicate that subsidence along this part of
the northwest coast during the late Holocene is not a
- Sedimentary deposition may have been significant,
especially along the valley margins. Based on the
geochronology the localized rate of deposition is at
least 4 cm/year. Therefore sites as old as A’oa, To’aga,
and Malifanua (3,000 or more years old) could be buried
by as much as 4.0 m of sediment.
TAMUG Archaeology Lab
References & Links of Interest