Archaeological results from accelerator dating


19-Jul-2020 13:08

The implication of what is represented by the carbon 14 activity of a sample must be considered.

The sample-context relationship is not always straightforward.

KW - C dating KW - Ams dating KW - Quaternary extingctions UR -

History, anthropology, and archaeology are three distinct but closely related bodies of knowledge that tell man of his present by virtue of his past.

AMS 14C dating of amino acids demonstrated that (1) post 10,800 year ages for North American megafauna are due to sample contamination, not Holocene ages on extinct fauna, (2) a Clovis age (10,900 years) was established for a human fossil from the Anzick site, Montana, (3) Holocene ages cannot be established absolutely for many North American human fossils because the bones were non-collagenous, (4) accurate ages are attainable on vertebrate fossils as small as passerine birds from Pacific Island localities, (5) well preserved bones are datable without their destruction by extracting protein with water at high temperatures, and (6) stratigraphic anomalies to 45,000 years in European Upper Paleolithic rock shelters are recognizable by dating bone directly.

AB - Molecular level 14C dating is the isolation of specific classes of molecules for their 14C dating by accelerator mass spectrometry (AMS).

But archaeology’s aim to understand mankind is a noble endeavor that goes beyond uncovering buried treasures, gathering information, and dating events.

It is in knowing what made past cultures cease to exist that could provide the key in making sure that history does not repeat itself.

Bones with ≥0·1-0·2% N and collagenous compositions can be dated accurately because structural collagen is present; contaminants are removable with XAD resin.Over the years, archaeology has uncovered information about past cultures that would have been left unknown had it not been with the help of such technologies as radiocarbon dating, dendrochronology, archaeomagnetic dating, fluoride dating, luminescence dating, and obsidian hydration analysis, among others.Radiocarbon dating has been around for more than 50 years and has revolutionized archaeology.Archaeologists, on the other hand, provide proof of authenticity of a certain artifact or debunk historical or anthropological findings.

Archaeology has undoubtedly enriched mankind’s history like no other science.Radiocarbon dating results are reported in uncalibrated years BP (Before Present), where BP is defined as AD 1950.Calibration is then done to convert BP years into calendar years.There is a greater part of man’s unwritten past that archaeology has managed to unravel.