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Landslides and slips can completely change the topography of an entire archaeology site burying what was once on top by that which is much older, hence reversing the strata layers.

A more precise and accurate archaeology dating system is known as absolute dating and can in most circumstances provide a calendar year to the object.

The greatest problem with dating an artefact from an archaeology site is that nearly every absolute dating process requires the destruction of at least a piece of the object in conducting the analysis.

Limits to relative dating are that it cannot provide an accurate year or a specific date of use.

Rocks, when formed by volcanic reaction or other cataclysmic event, contain a minute quantity of radioactive substance.

From the day of the rock's creation this radioactivity begins to deplete. What is that type of dating called and do you know who does it?

According to the Curtin University press release, Professor Brent Mc Innes devised the idea of using the laser and helium dating technique on zircon crystals that come from a diamond-rich rock known as kimberlite.

Mc Innes’ team found that zircon crystals were very low in helium.

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