Sentences with phrase «paleomagnetic dating»
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Paleomagnetic dating — matching magnetic properties in the sediments surrounding a fossil or artifact to ancient reversals in the Earth's magnetic poles to determine age — later determined the tools had to have been made 3.3 million years ago.
Not exact matches
Some of the methods used to determine the age of the planet include: Stratigraphy, Dendrochronology, Obsidian Hydration Dating, Paleomagnetic / Archaeomagnetic, Luminescence Dating, Amino Acid Racemization, Fission - track Dating, Ice Cores, Cation Ratio, Fluorine Dating, Patination, oxidizable Carbon Ratio, Electron Spin Resonance, and Cosmic - ray Exposure Dating.
Some other dating methods that have confirmed the age of the earth as being far greater than 10,000 yeras include: Stratigraphy, Dendrochronology, Obsidian Hydration Dating, Paleomagnetic / Archaeomagnetic, Luminescence Dating, Amino Acid Racemization, Fission - track Dating, Ice Cores, Cation Ratio, Fluorine Dating, Patination, oxidizable Carbon Ratio, Electron Spin Resonance, and Cosmic - ray Exposure Ddating methods that have confirmed the age of the earth as being far greater than 10,000 yeras include: Stratigraphy, Dendrochronology, Obsidian Hydration Dating, Paleomagnetic / Archaeomagnetic, Luminescence Dating, Amino Acid Racemization, Fission - track Dating, Ice Cores, Cation Ratio, Fluorine Dating, Patination, oxidizable Carbon Ratio, Electron Spin Resonance, and Cosmic - ray Exposure DDating, Paleomagnetic / Archaeomagnetic, Luminescence Dating, Amino Acid Racemization, Fission - track Dating, Ice Cores, Cation Ratio, Fluorine Dating, Patination, oxidizable Carbon Ratio, Electron Spin Resonance, and Cosmic - ray Exposure DDating, Amino Acid Racemization, Fission - track Dating, Ice Cores, Cation Ratio, Fluorine Dating, Patination, oxidizable Carbon Ratio, Electron Spin Resonance, and Cosmic - ray Exposure DDating, Ice Cores, Cation Ratio, Fluorine Dating, Patination, oxidizable Carbon Ratio, Electron Spin Resonance, and Cosmic - ray Exposure DDating, Patination, oxidizable Carbon Ratio, Electron Spin Resonance, and Cosmic - ray Exposure DatingDating.
They estimated the age of the volcanic rocks and sediments that encased the fossils with argon - dating and paleomagnetic methods.
The revised age — depth model reveals that the published age estimates based on some previously identified paleomagnetic events and optically stimulated luminescence dates from MAL05 - 1C are inaccurate for sediment older than ∼ 50 ka.
The age of the fossils was corroborated by radiometric dating (using radioactive isotopes), the global paleomagnetic sequence (signatures of reversals of Earth's magnetic field found in the samples), and fossil correlations (age of other fossils).
Researchers, led by Yohannes Haile - Selassie co-authored a paper in the Proceedings of the National Academy of science (PNAS) reporting the discovery, piecing together and analysis of a partially complete male skeleton dated by paleomagnetic and radiometric methods to 3.6 million years ago.
The researchers say Rising Star Cave was dated using a combination of optically stimulated luminescence of sediments with uranium - thorium dating and paleomagnetic analyses of flowstones to establish how the cave sediments relate to the geological timescale in the Dinaledi Chamber.
Paleomagnetic measurements show that this sediment contains the Laschamps excursion, which has been dated elsewhere to 45 000 to 39 000 years ago (21, 22).