Spatial and temporal offsets between proxy records in a sediment drift.

@article{Ohkouchi2002SpatialAT,
  title={Spatial and temporal offsets between proxy records in a sediment drift.},
  author={Nao Ohkouchi and Timothy I Eglinton and Lloyd D. Keigwin and John M. Hayes},
  journal={Science},
  year={2002},
  volume={298 5596},
  pages={1224-7}
}
Chronologies for Late Quaternary marine sediment records are usually based on radiocarbon ages of planktonic foraminifera. Signals carried by other sedimentary components measured in parallel can provide complementary paleoclimate information. A key premise is that microfossils and other indicators within a given sediment horizon are of equal age. We show here that haptophyte-derived alkenones isolated from Bermuda Rise drift sediments are up to 7000 years older than coexisting planktonic… CONTINUE READING