Dating methods indicating that something is older

Such calibrated dates are expressed as cal BP, where "cal" indicates "calibrated years", or "calendar years", before From Wikipedia, the free encyclopedia.

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Archived from the original on Article 13 c ". Huth 25 November Scientific Style and Format: Retrieved 4 October Centre for Ice and Climate - University of Copenhagen. Retrieved September 17, Checks with samples of known age". University of Pennsylvania Press. Canon of Kings Lists of kings Limmu.

Homo sapiens

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The expansion of grassland systems in Africa in relation to mammalian evolution and the origin of the genus Homo. Palaeogeography, Palaeoclimatology, Palaeoecology , Cutmarked bones from Pliocene archaeological sites at Gona, Afar, Ethiopia: Journal of Human Evolution 48, Body proportions of Homo habilis reviewed.

Behavioral influences

Journal of Human Evolution 46, Dental microwear and diets of African early Homo. Journal of Human Evoution 50, 78— Diet in early Homo: Annual Review of Anthropology 35, Reich and coworkers found that at cryogenic temperatures, lead becomes a superconductor, but the corrosion products formed from centuries of exposure to air and water lead oxide and lead carbonate do not superconduct. Annual Review of Earth and Planetary Sciences.

Ortz; Trinidad De Torres International Journal of Chemical Kinetics.


The results provide a compelling case for applicability of amino acid racemization methods as a tool for evaluating changes in depositional dynamics, sedimentation rates, time-averaging, temporal resolution of the fossil record, and taphonomic overprints across sequence stratigraphic cycles. The University of Arizona Press. A team from the University of Manchester and the University of Edinburgh has discovered a new technique which they call 'rehydroxylation dating' that can be used on fired clay ceramics like bricks, tile and pottery.

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Before Present - Wikipedia

Geological time age chron eon epoch era period Geochronology Geological history of Earth. Chronological dating Chronobiology Circadian rhythms Dating methodologies in archaeology Time geography. Time measurement and standards. Chronometry Orders of magnitude Metrology. Ephemeris time Greenwich Mean Time Prime meridian.

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  6. Homo habilis | The Smithsonian Institution's Human Origins Program?
  7. Absolute space and time Spacetime Chronon Continuous signal Coordinate time Cosmological decade Discrete time and continuous time Planck time Proper time Theory of relativity Time dilation Gravitational time dilation Time domain Time translation symmetry T-symmetry. Chronological dating Geologic time scale International Commission on Stratigraphy.

    Before Present

    Galactic year Nuclear timescale Precession Sidereal time. Canon of Kings Lists of kings Limmu. Chinese Japanese Korean Vietnamese. Lunisolar Solar Lunar Astronomical year numbering.