Description These are the largest and oldest Neolithic gallery mines in Europe (3.350 BCE) and the only one dedicated to the extraction of variscita a green mineral used to make body ornaments.

The mines were dated from the pottery remains found in the sediments used to refill the sectors of the mine already  depleted.
(named cadiral pottery). Organic materials were Radiocarbon dated.

Therefore the dating of mines refers to the years after their exploitation, once the mines were refilled and abandoned.

 

Evaluations revealed both prehistoric and Roman occupation, which meant that, under the terms of the planning consent for the housing development, excavations were required on five parts of the site.

 

Discoveries included a prehistoric 42m diameter pit. Radiocarbon dating was used to date three samples of wood charcoal. Calibrated age for each sample was BC1323–1187, BC1387–1194 and BC 1494–1395 with respective probabilities of 72.5%, 94.4.%  and 95.4%.

The disk was found near Nebra, Saxony-Anhalt, Germany.

The Nebra sky disk was dated with the help of a number of Bronze Age weapons found alongside the disk. A birchbark particle was found on one of the swords and could be radio-carbondated to between 1600 and 1560 BC. The disk itself could not be radio-carbondated, as there was no C14 in it. The gold plating was x-rayed at a particle accelerator but it was found out that it doesn't show a uniform composition.

The significance of Serpent Mound and other ancient Ohio earthworks has garnered international attention. In 2008, Serpent Mound and eight other Ohio earthworks were selected by the United States Department of the Interior for inclusion on the United States’ Tentative List of sites to be submitted to the United Nations Educational, Scientific, and Cultural Organization (UNESCO) for inscription on the prestigious World Heritage List. If it is eventually inscribed on the World Heritage List later this decade, Serpent Mound will join the ranks of the Pyramids of Egypt, the Great Wall of China, Pompeii, Stonehenge and the Taj Mahal, all of which are World Heritage sites. World Heritage status has the potential to elevate local and international awareness about the site's value, further encourage communities to protect and invest in its preservation and increase potentially beneficial tourism to the site. 

Serpent Mound is managed locally by the Arc of Appalachia Preserve System.

(text taken from https://www.ohiohistory.org/visit/museum-and-site-locator/serpent-mound)

 

Dated by use of dendrochronology (oak timbers from pit); tree-ring analysis;

Examination of biological remains (organic silt, clay: bulk sieve and paraffin flotation; insect remains; mollusc fragments to give date of landfill); metallurgical analysis (phosphorous and carbon content); X-ray fluoresecence; atomic absorption spectrometry.     (See: Dominic Tweddle et al, The Anglian Helmet from Coppergate, The Archaeology of York, Volume 17: Small Finds (York Archaeological Trust, 2015).
Image: Yorkshire Museum/ Wiki
nickyh

Radiocarbon dating has revealed the Red 'Lady' Of Paviland was a man of around 20 years of age. Although Goat's Hole Cave is on the coast today, it would have been around 70 miles inland 30,000 years ago.