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Intercalibration of standards, absolute ages and uncertainties in 40Ar/39Ar dating
Synchronizing Rock Clocks of Earth History
- K. Kuiper, A. Deino, F. Hilgen, W. Krijgsman, P. Renne, J. Wijbrans
- Geology, PhysicsScience
- 25 April 2008
This calibration of tephras in marine deposits in Morocco to calibrate the age of Fish Canyon sanidine provides tight constraints for the astronomical tuning of pre-Neogene successions, resulting in a mutually consistent age of ∼65.95 Ma for the Cretaceous/Tertiary boundary.
Evolution of the northern Main Ethiopian rift: birth of a triple junction
The age of the Neapolitan Yellow Tuff caldera-forming eruption (Campi Flegrei caldera – Italy) assessed by 40Ar/39Ar dating method
Intercalibration of astronomical and radioisotopic time
The 40Ar/39Ar radioisotopic dating technique is one of the most precise and versatile methods available for dating events in Earth's history, but the accuracy of this method is limited by the…
Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary
Radiometric dating establishes the mass extinction that killed the dinosaurs as synchronous with a large asteroid impact between the Cretaceous-Paleogene boundary and associated mass extinctions with the Chicxulub bolide impact to within 32,000 years.
Late Cenozoic Moisture History of East Africa
Lake sediments in 10 Ethiopian, Kenyan, and Tanzanian rift basins suggest that there were three humid periods at 2.7 to 2.5 million years ago, superimposed on the longer-term aridification of East Africa.
Chronology of volcanism and rift basin propagation - Rungwe volcanic province, East Africa
Continental rifts are segmented along their lengths into 50 to 100 km-long extensional basins, suggesting a genetic relationship with regularly segmented oceanic rifts. To investigate the spatial and…
Miocene rotation of Sardinia: New paleomagnetic and geochronological constraints and geodynamic implications
(40)Ar/(39)Ar dating of Bed I, Olduvai Gorge, Tanzania, and the chronology of early Pleistocene climate change.
- A. Deino
- Environmental Science, GeographyJournal of Human Evolution
- 1 August 2012