Uses of mass spectrometry in radioactive dating
In order to confirm that the object is contemporaneous with the soil or sedimentary deposit in which it was found, and not a later intrusive burial in an older deposit, comparisons with other fossils, rocks and rock strata are made to establish the site's biostratigraphy.Thus sometimes, dating is dependent on paleontologist scholarship to provide the historical context against which an artifact's relevance and age can be assessed, through stylistic comparison with cave paintings and engravings at other archeological sites.At present, a large variety of fossils, tools and artifacts are being studied by paleoanthropologists and other Stone Age scholars, in order to fix their date of origin.Only recently (2012), we have seen the chronology of Paleolithic art and culture changed completely by Uranium/Thorium dating tests on the cave art of El Castillo and Altamira.
In addition, it seems likely that Aboriginal rock art in Australia will also - in the not too distant future - be discovered to be much older than presently thought.
Meanwhile, in Australia, the Bradshaw Paintings (c.15,500 BCE) appeared, along with a wide variety of pictographs and petroglyphs made by the aboriginal creators of Ubirr Rock Art in Arnhem Land, Kimberley Rock Art in northern Australia and Burrup Peninsula Rock Art in the Pilbara.
Uses of mass spectrometry in radioactive dating comments