Methods used to date fossilized remains, artifacts and geological matter. Includes radio carbon dating procedures and controversies as well as newer technologies for geological dating.
Marker horizons or chronohorizons or marker beds are stratigraphic units of the same age and of such distinctive composition and appearance, that, despite their presence in separate geographic locations, there is no doubt about their being of equivalent age (isochronous) and of common origin.
When measurable magnetic properties of rocks vary stratigraphically they may be the bases for related but different kinds of stratigraphic units known collectively as "magnetostratigraphic units" ("magnetozones").
Although the best known form of luminescence dating is thermoluminescence (or TL), there are several scientific methods which can specify the date of certain artifacts or soil sediments by measuring the amount of light energy they have trapped in their crystals.
Cosmogenic nuclide dating can be used to determine rates of ice-sheet thinning and recession, the ages of moraines, and the age of glacially eroded bedrock surfaces.
Marker horizons or chronohorizons or marker beds are stratigraphic units of the same age and of such distinctive composition and appearance, that, despite their presence in separate geographic locations, there is no doubt about their being of equivalent age (isochronous) and of common origin.
When measurable magnetic properties of rocks vary stratigraphically they may be the bases for related but different kinds of stratigraphic units known collectively as "magnetostratigraphic units" ("magnetozones").
Although the best known form of luminescence dating is thermoluminescence (or TL), there are several scientific methods which can specify the date of certain artifacts or soil sediments by measuring the amount of light energy they have trapped in their crystals.
Cosmogenic nuclide dating can be used to determine rates of ice-sheet thinning and recession, the ages of moraines, and the age of glacially eroded bedrock surfaces.
