Explain radiometric dating fossils videochat videodating 2cams in ua
As a result, rocks that record its earliest history have not been found and probably no longer exist.Nevertheless, there is substantial evidence that the Earth and the other bodies of the Solar System are 4.5-4.6 billion years old, and that the Milky Way Galaxy and the Universe are older still.
Minerals precipitate from the groundwater, occupying the empty spaces.
is any preserved remains, impression, or trace of any once-living thing from a past geological age.
Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, hair, petrified wood, oil, coal, and DNA remnants.
This process can occur in very small spaces, such as within the cell wall of a plant cell.
Small scale permineralization can produce very detailed fossils.
Some fossils are biochemical and are called chemofossils or biosignatures.