Thorium-230 ages of corals and duration of the last interglacial sea-level high stand on Oahu, Hawaii
Szabo BJ, Ludwig KR, Muhs DR, Simmons KR. 1994. Thorium-230 ages of corals and duration of the last interglacial sea-level high stand on Oahu, Hawaii. Science. 266(5182):93-96
Thorium-230 ages of emergent marine deposits on Oahu, Hawaii, have a uniform distribution of ages from ~114,000 to ~131,000 years, indicating a duration for the last interglacial sea-level high stand of ~17,000 years, in contrast to a duration of ~8000 years inferred from the orbitally tuned marine oxygen isotope record. Sea level on Oahu rose to Ž1 to 2 meters higher than present by 131,000 years ago or ~6000 years earlier than inferred from the marine record. Although the latter record suggests a shift back to glacial conditions beginning at ~119,000 years ago, the Oahu coral ages indicate a near present sea level until ~114,000 years ago.
- Type
- Journal Article
- Authors
- Szabo, Barney; Ludwig, Kenneth; Muhs, Daniel; Simmons, Kathleen
- Units
- HAVO
- Keywords
- 230Th-234U Decay Series, Age Dating, Chemical Analysis, Coral, Eustatic, Geochemistry, Isotopes, Oahu, Thorium (Th), Trace Elements, Uranium (U)