Radiocarbon dating in the context of "Isotopes of carbon"

The New Kingdom, also called the Egyptian Empire, refers to ancient Egypt between the 16th century BC and the 11th century BC. This period of ancient Egyptian history covers the Eighteenth, Nineteenth, and Twentieth dynasties. Through radiocarbon dating, the establishment of the New Kingdom has been placed between 1570 and 1544 BC. The New Kingdom followed the Second Intermediate Period and was succeeded by the Third Intermediate Period. It was the most prosperous time for ancient Egypt and marked the peak of its power.

In 1845, the concept of a "New Kingdom" as one of three "golden ages" was coined by German scholar Christian Charles Josias von Bunsen; the original definition would evolve significantly throughout the 19th and 20th centuries. The later part of this period, under the Nineteenth Dynasty (1295–1189 BC) and the Twentieth Dynasty (1189–1069 BC), is also known as the Ramesside period. It is named after the eleven pharaohs who took the name Ramesses, after Ramesses I, who founded the Nineteenth Dynasty, and his grandson Ramesses II, who was its longest-reigning monarch.

Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolinite, Al₂Si₂O₅(OH)₄). Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impurities, such as a reddish or brownish colour from small amounts of iron oxide.

Clays develop plasticity when wet but can be hardened through firing. Clay is the longest-known ceramic material. Prehistoric humans discovered the useful properties of clay and used it for making pottery. Some of the earliest pottery shards have been dated to around 14,000 BCE, and clay tablets were the first known writing medium. Clay is used in many modern industrial processes, such as paper making, cement production, and chemical filtering. Between one-half and two-thirds of the world's population live or work in buildings made with clay, often baked into brick, as an essential part of its load-bearing structure. In agriculture, clay content is a major factor in determining land arability. Clay soils are generally less suitable for crops due to poor natural drainage; however, clay soils are more fertile, due to higher cation-exchange capacity.

The Capitoline Wolf (Italian: Lupa Capitolina) is a bronze sculpture depicting a scene from the legend of the founding of Rome. The sculpture shows a she-wolf suckling the mythical twin founders of Rome, Romulus and Remus. According to the legend, when King Numitor, grandfather of the twins, was overthrown by his brother Amulius in Alba Longa, the usurper ordered them to be cast into the Tiber River. They were rescued by a she-wolf that cared for them until a herdsman, Faustulus, found and raised them.

The age and origin of the Capitoline Wolf are controversial. The statue was long thought to be an Etruscan work of the fifth century BC, with the twins added in the late 15th century AD, probably by sculptor Antonio del Pollaiuolo. However, radiocarbon and thermoluminescence dating in the 21st century has suggested that the wolf portion of the statue may have been cast between 1021 and 1153, though the results are inconsistent, and there is yet no consensus for a revised dating. In a conference on this theme, most academics continued to support an ancient Etruscan origin. An analysis of the metal suggests that it contains lead from a source not known to have operated during medieval times.

Before Present (BP) or "years before present (YBP)" is a time scale used mainly in archaeology, geology, and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1 January 1950 as the commencement date (epoch) of the age scale, with 1950 being labelled as the "standard year". The abbreviation "BP" has been interpreted retrospectively as "Before Physics", which refers to the time before nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, which scientists must account for when using radiocarbon dating for dates of origin that may fall after this year.

In a convention that is not always observed, many sources restrict the use of BP dates to those produced with radiocarbon dating; the alternative notation "RCYBP" stands for the explicit "radio carbon years before present".

34°41′35″N 112°41′20″E / 34.693°N 112.689°E / 34.693; 112.689

The Erlitou culture (Chinese: 二里頭; pinyin: Èrlǐtóu) was an early Bronze Age society and archaeological culture. It existed in the Yellow River valley from approximately 1900 to 1500 BC. A 2007 study using radiocarbon dating proposed a narrower date range of 1750–1530 BC. The culture is named after Erlitou, an archaeological site in Yanshi, Henan. It was widely spread throughout Henan and Shanxi and later appeared in Shaanxi and Hubei. Most archaeologists consider Erlitou the first state-level society in China. Chinese archaeologists generally identify the Erlitou culture as the site of the Xia dynasty, but there is no firm evidence, such as surviving written records, to substantiate such a linkage, as the earliest evidence of Chinese writing dates to the Late Shang period.

Stonehenge is a prehistoric megalithic structure on Salisbury Plain in Wiltshire, England, two miles (3 km) west of Amesbury. It consists of an outer ring of vertical sarsen standing stones, each around 13 feet (4.0 m) high, seven feet (2.1 m) wide, and weighing around 25 tons, topped by connecting horizontal lintel stones which are held in place with mortise and tenon joints—a feature unique among contemporary monuments. Inside is a ring of smaller bluestones. Inside, these are free-standing trilithons, two bulkier vertical sarsens joined by a single lintel. The whole monument, now in ruins, is aligned towards the sunrise on the summer solstice and sunset on the winter solstice. The stones are set within earthworks in the middle of the densest complex of Neolithic and Bronze Age monuments in England, including several hundred tumuli (burial mounds).

Stonehenge was constructed in several phases beginning about 3100 BC and continuing until about 1600 BC. The famous circle of large sarsen stones was placed between 2600 BC and 2400 BC. The surrounding circular earth bank and ditch, which constitute the earliest phase of the monument, have been dated to about 3100 BC. Radiocarbon dating suggests that the bluestones were given their current positions between 2400 and 2200 BC, although they may have been at the site as early as 3000 BC.

The Bronocice pot (Polish: Waza z Bronocic) is a ceramic vase incised with one of the earliest known depictions of a wheeled vehicle. It was discovered in the village of Bronocice near the Nidzica River [pl] in Świętokrzyskie Voivodeship, in south-central Poland. Attributed to the Funnelbeaker archaeological culture, radiocarbon tests dated the pot to the mid-fourth millennium BCE. Today it is housed at the Archaeological Museum of Kraków in southern Poland.

In Muslim tradition the Quran is the final revelation from God, Islam's divine text, believed to be delivered to the Islamic prophet Muhammad through the angel Jibril (Gabriel). Muhammad's revelations were said to have been recorded orally and in writing, through Muhammad and his followers up until his death in 632 CE. These revelations were then compiled by first caliph Abu Bakr and codified during the reign of the third caliph Uthman (r. 644–656 CE) so that the standard codex edition of the Quran or Muṣḥaf was completed around 650 CE, according to Muslim scholars. This has been critiqued by some western scholarship, suggesting the Quran was canonized at a later date, based on the dating of classical Islamic narratives, i.e. hadiths, which were written 150–200 years after the death of Muhammad, and partly because of the textual variations present in the Sana'a manuscript. Muslim scholars who oppose the views of the Western revisionist theories regarding the historical origins of the Quran have described their theses as "untenable".

More than 60 fragments including more than 2000 folios (4000 pages) are so far known as the textual witnesses (manuscripts) of the Qur'an before 800 CE (within 168 years after the death of Muhammad), according to Corpus Coranicum. However, in 2015, experts from the University of Birmingham discovered a single folio later called the Birmingham Quran manuscript, which is possibly the oldest manuscript of the Quran in the world. Radiocarbon analysis to determine the age of the manuscript revealed that this manuscript could be traced back to some time between 568 and 645 AD. Selected manuscripts from the first four centuries after the death of Muhammad (632–1032 CE) are listed below.

The Last Glacial Maximum (LGM), also referred to as the Last Glacial Coldest Period, was the most recent time during the Last Glacial Period where ice sheets were at their greatest extent between 26,000 and 20,000 years ago. Ice sheets covered much of Northern North America, Northern Europe, and Asia and profoundly affected Earth's climate by causing a major expansion of deserts, along with a large drop in sea levels.

Based on changes in position of ice sheet margins dated via terrestrial cosmogenic nuclides and radiocarbon dating, growth of ice sheets in the southern hemisphere commenced 33,000 years ago and maximum coverage has been estimated to have occurred sometime between 26,500 years ago and 20,000 years ago. After this, deglaciation caused an abrupt rise in sea level. Decline of the West Antarctica ice sheet occurred between 14,000 and 15,000 years ago, consistent with evidence for another abrupt rise in the sea level about 14,500 years ago. Glacier fluctuations around the Strait of Magellan suggest the peak in glacial surface area was constrained to between 25,200 and 23,100 years ago.

The First Dynasty of ancient Egypt (Dynasty I) covers the first series of Egyptian kings to rule over a unified Egypt. It immediately follows the unification of Upper and Lower Egypt, by Menes, or Narmer, and marks the beginning of the Early Dynastic Period, when power was centered at Thinis.

The date of this period is subject to scholarly debate about the Egyptian chronology. It falls within the early Bronze Age and is variously estimated to have begun anywhere between the 34th and the 30th centuries BC. In a 2013 study based on radiocarbon dates, the accession of Hor-Aha, the second king of the First Dynasty, was placed between 3111 and 3045 BC with 68% confidence, and between 3218 and 3035 with 95% confidence. The same study placed the accession of Den, the sixth king of the dynasty, between 2928 and 2911 BC with 68% confidence, although a 2023 radiocarbon analysis placed Den's accession potentially earlier, between 3011 and 2921, within a broader window of 3104 to 2913.