A revised Cenozoic geochronology and chronostratigraphy
- W. Berggren, D. Kent, C. Swisher, M. Aubry
- Geology, Geography
- 1995
Since the publication of our previous time scale (Berggren and others, 1985c = BKFV85) a large amount of new magneto- and biostratigraphic data and radioisotopic ages have become available. An…
Revised calibration of the geomagnetic polarity timescale for the Late Cretaceous and Cenozoic
Recently reported radioisotopic dates and magnetic anomaly spacings have made it evident that modification is required for the age calibrations for the geomagnetic polarity timescale of Cande and…
A new geomagnetic polarity time scale for the Late Cretaceous and Cenozoic
We have constructed a magnetic polarity time scale for the Late Cretaceous and Cenozoic based on an analysis of marine magnetic profiles from the world's ocean basins. This is the first time, since…
GEOCHRONOLOGY, TIME SCALES AND GLOBAL STRATIGRAPHIC CORRELATION
- W. Berggren, D. Kent, M. Aubry, J. Hardenbol
- Geology
- 1995
Geochronology, Time Scales, and Global Stratigraphic Correlation - The last decade has witnessed significant advances in analytic techniques and methodologic approaches to understanding earth…
3.3-million-year-old stone tools from Lomekwi 3, West Turkana, Kenya
- S. Harmand, Jason E. Lewis, H. Roche
- Geography, Environmental ScienceNature
- 21 May 2015
The discovery of Lomekwi 3 is reported, a 3.3-million-year-old archaeological site where in situ stone artefacts occur in spatiotemporal association with Pliocene hominin fossils in a wooded palaeoenvironment and the name ‘Lomekwian’ is proposed, which predates the Oldowan by 700,000 years and marks a new beginning to the known archaeological record.
Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region
- N. Shackleton, J. Backman, J. Westberg-Smith
- Geography, Environmental ScienceNature
- 1 February 1984
We report here that DSDP Site 552A, cored with the hydraulic piston corer on the west flank of Rockall Bank, recovered an undisturbed sequence of alternating white deep-sea carbonate oozes and…
An earlier origin for the Acheulian
Co-occurrence of Oldowan and Acheulian artefacts at the Kokiselei site complex indicates that the two technologies are not mutually exclusive time-successive components of an evolving cultural lineage, and suggests that multiple groups of hominins distinguished by separate stone-tool-making behaviours and dispersal strategies coexisted in Africa at 1.76 Myr ago.
A Simplified Statistical Model for the Geomagnetic Field and the Detection of Shallow Bias in Paleomagnetic Inclinations: was the Ancient Magnetic Field Dipolar?
The assumption that the time-averaged geomagnetic field closely approximates that of a geocentric axial dipole (GAD) is valid for at least the last 5 million years and most paleomagnetic studies make…
Late Neogene chronology: New perspectives in high-resolution stratigraphy
- W. Berggren, F. Hilgen, N. Shackleton
- Geography, Environmental Science
- 1 November 1995
We present an integrated geochronology for late Neogene time (Pliocene, Pleistocene, and Holocene Epochs) based on an analysis of data from stable isotopes, magnetostratigraphy, radiochronology, and…
Orbital climate forcing of δ13C excursions in the late Paleocene–early Eocene (chrons C24n–C25n)
- B. S. Cramer, J. Wright, D. Kent, M. Aubry
- Environmental Science, Geography
- 1 December 2003
[1] High-resolution stable carbon isotope records for upper Paleocene–lower Eocene sections at Ocean Drilling Program Sites 1051 and 690 and Deep Sea Drilling Project Sites 550 and 577 show numerous…
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