Chronometric dating in archaeology schwarcz
Before this, archaeologists and scientists relied on deductive dating methods, such as comparing rock strata formations in different regions.
Chronometric dating has advanced since the 1970s, allowing far more accurate dating of specimens.
Earlier attempts to date the Mauer sands, namely by thermoluminescence of feldspar and electron spin resonance (ESR) of quartz as well as uranium-series (US) dating of an elephant tusk, were unsatisfactory (3).
In the meantime, chronometric technologies have advanced, particularly in their range applicability.
Hence, the interglacial represented by the Mauer lower sands is usually correlated with MIS 13 or MIS 15, orbitally tuned dates of 478–533 ka and 563–621 ka, respectively (6).
Ages of 607 ± 55 ka, 603 ± 56 ka, 554 ± 33 ka, and 502 ± 27 ka were obtained for the lower sands, whereas the upper sands gave ages of 508 ± 50 ka and 420 ± 23 ka (Fig. Eight herbivore teeth (five from the lower sands and three from the upper sands) were analyzed with the ESR-US technique (9).
As reported in a previous study (10), most of the Mauer dental-tissue samples show evidence of postmortem uranium uptake, allowing the calculation of reliable ESR-US ages.
The good preservation of the mammal bones (2)—and in particular of the human mandible—indicates that they were transported from a nearby fluvial floodplain before becoming embedded in the river deposits (i.e., they have the same geological age as their surrounding sediment layers).
Age estimates for the Mauer mandible have been advanced previously.
Search for chronometric dating in archaeology schwarcz:
Chronometric dating, also known as chronometry or absolute dating, is any archaeological dating method that gives a result in calendar years before the present time.