The mid-24th century BCE climate anomaly is the period, between 2354 and 2345 BCE, of consistently reduced annual temperatures that are reconstructed from consecutive abnormally narrow, Irish oak tree rings. These tree rings are indicative of a period of catastrophically reduced growth in Irish trees during that period. This range of dates also matches the transition from the Neolithic to the Bronze Age in the British Isles and a period of widespread societal collapse in the Near East. It has been proposed that this anomalous downturn in the climate might have been the result of comet debris suspended in the atmosphere. [1] [2]
In 1997, Marie-Agnès Courty proposed that a natural disaster involving wildfires, floods, and an air blast of over 100 megatons occurred about 2350 BCE. This proposal is based on unusual "dust" deposits which have been reported from archaeological sites in Mesopotamia that are a few hundred kilometres from each other. [3] In later papers, Courty subsequently revised the date of this event from 2350 BCE to 2000 BCE. [4] [5]
Based only upon the analysis of satellite imagery, Umm al Binni lake in southern Iraq has been suggested as a possible extraterrestrial impact crater and possible cause of this natural disaster. [6] [7] More recent sources have argued for a formation of the lake through the subsidence of the underlying basement fault blocks. [8] [9] Baillie and McAneney's 2015 discussion of this climate anomaly discusses its abnormally narrow Irish tree rings and the anomalous dust deposits of Courty. However, this paper lacks any mention of Umm al Binni lake. [2]
The Akkadian Empire was the first known ancient empire of Mesopotamia, succeeding the long-lived civilization of Sumer. Centered on the city of Akkad and its surrounding region, the empire would unite Akkadian and Sumerian speakers under one rule and exercised significant influence across Mesopotamia, the Levant, and Anatolia, sending military expeditions as far south as Dilmun and Magan in the Arabian Peninsula.
The 1620s BC was a decade lasting from January 1, 1629 BC to December 31, 1620 BC.
The 29th century BC was a century that lasted from the year 2900 BC to 2801 BC.
The Chicxulub crater is an impact crater buried underneath the Yucatán Peninsula in Mexico. Its center is offshore, but the crater is named after the onshore community of Chicxulub Puerto. It was formed slightly over 66 million years ago when a large asteroid, about ten kilometers in diameter, struck Earth. The crater is estimated to be 200 kilometers in diameter and 20 kilometers in depth. It is the second largest confirmed impact structure on Earth, and the only one whose peak ring is intact and directly accessible for scientific research.
In geology, catastrophism is the theory that the Earth has largely been shaped by sudden, short-lived, violent events, possibly worldwide in scope. This contrasts with uniformitarianism, according to which slow incremental changes, such as erosion, brought about all the Earth's geological features. The proponents of uniformitarianism held that the present was "the key to the past", and that all geological processes throughout the past resembled those that can be observed today. Since the 19th-century disputes between catastrophists and uniformitarians, a more inclusive and integrated view of geologic events has developed, in which the scientific consensus accepts that some catastrophic events occurred in the geologic past, but regards these as explicable as extreme examples of natural processes which can occur.
Umma (Sumerian: 𒄑𒆵𒆠ummaKI; in modern Dhi Qar Province in Iraq, was an ancient city in Sumer. There is some scholarly debate about the Sumerian and Akkadian names for this site. Traditionally, Umma was identified with Tell Jokha. More recently it has been suggested that it was located at Umm al-Aqarib, less than 7 km to its northwest or was even the name of both cities. One or both were the leading city of the Early Dynastic kingdom of Gišša, with the most recent excavators putting forth that Umm al-Aqarib was prominent in EDIII but Jokha rose to preeminence later. The town of KI.AN was also nearby. KI.AN, which was destroyed by Rimush, a ruler of the Akkadian Empire. There are known to have been six gods of KI.AN including Gula KI.AN and Sara KI.AN.
Umm el-Marra,, east of modern Aleppo in the Jabbul Plain of northern Syria, was one of the ancient Near East's oldest cities, located on a crossroads of two trade routes northwest of Ebla, in a landscape that was much more fertile than it is today. Possibly this is the city of Tuba mentioned in Egyptian inscriptions listing cities that were defeated or destroyed in the Pharaoh Thutmose III's north Syrian campaign. The city of Tuba is also mentioned in epigraphic remains from Ebla, Mari, and Alalakh.
An impact winter is a hypothesized period of prolonged cold weather due to the impact of a large asteroid or comet on the Earth's surface. If an asteroid were to strike land or a shallow body of water, it would eject an enormous amount of dust, ash, and other material into the atmosphere, blocking the radiation from the Sun. This would cause the global temperature to decrease drastically. If an asteroid or comet with the diameter of about 5 km (3.1 mi) or more were to hit in a large deep body of water or explode before hitting the surface, there would still be an enormous amount of debris ejected into the atmosphere. It has been proposed that an impact winter could lead to mass extinction, wiping out many of the world's existing species. The Cretaceous–Paleogene extinction event probably involved an impact winter, and led to mass extinction of most tetrapods weighing more than 25 kilograms.
Comet Encke, or Encke's Comet, is a periodic comet that completes an orbit of the Sun once every 3.3 years. Encke was first recorded by Pierre Méchain on 17 January 1786, but it was not recognized as a periodic comet until 1819 when its orbit was computed by Johann Franz Encke. Like Halley's Comet, it is unusual in its being named after the calculator of its orbit rather than its discoverer. Like most comets, it has a very low albedo, reflecting only 4.6% of the light its nucleus receives, although comets generate a large coma and tail that can make them much more visible during their perihelion. The diameter of the nucleus of Encke's Comet is 4.8 km.
Michael G. L. Baillie (1944-2023) was a leading expert in dendrochronology, or dating by means of tree-rings, and Professor of Palaeoecology at Queen's University of Belfast, in Northern Ireland. In the 1980s, he was instrumental in building a year-by-year chronology of tree-ring growth reaching 7,400 years into the past.
Tell Brak was an ancient city in Syria; its remains constitute a tell located in the Upper Khabur region, near the modern village of Tell Brak, 50 kilometers north-east of Al-Hasaka city, Al-Hasakah Governorate. The city's original name is unknown. During the second half of the third millennium BC, the city was known as Nagar and later on, Nawar.
The Minoan eruption was a catastrophic volcanic eruption that devastated the Aegean island of Thera circa 1600 BCE. It destroyed the Minoan settlement at Akrotiri, as well as communities and agricultural areas on nearby islands and the coast of Crete with subsequent earthquakes and paleotsunamis. With a Volcanic Explosivity Index (VEI) of between 6 and 7, it resulted in the ejection of approximately 28–41 km3 (6.7–9.8 cu mi) of dense-rock equivalent (DRE), the eruption was one of the largest volcanic events in human history. Since tephra from the Minoan eruption serves as a marker horizon in nearly all archaeological sites in the Eastern Mediterranean, its precise date is of high importance and has been fiercely debated among archaeologists and volcanologists for decades, without coming to a definite conclusion.
Umm al Binni lake is a mostly dry lake within the Central Marshes in Maysan Governorate in southern Iraq. The 3.4 km (2.1 mi) wide lake is approximately 45 km (28 mi) northwest of the Tigris–Euphrates confluence. Because of its shape, location, and other details, it was first conjectured by Sharad Master, a geoarchaeologist, to represent an impact crater. However, these claims have been disputed, with other studies finding subsidence of the underlying rock a more plausible explanation.
The Younger Dryas impact hypothesis (YDIH) proposes that the onset of the Younger Dryas (YD) cool period (stadial) at the end of the Last Glacial Period, around 12,900 years ago was the result of some kind of extraterrestrial event with specific details varying between publications. The hypothesis is controversial and not widely accepted by relevant experts.
A Ring mold crater is a kind of crater on the planet Mars that looks like the ring molds used in baking. They are believed to be caused by an impact into ice. The ice is covered by a layer of debris. They are found in parts of Mars that have buried ice. Laboratory experiments confirm that impacts into ice result in a "ring mold shape." They are also bigger than other craters in which an asteroid impacted solid rock. Impacts into ice warm the ice and cause it to flow into the ring mold shape. These craters are common in lobate debris aprons and lineated valley fill. Many have been found in Mamers Valles, a channel found along the dichotomy boundary in Deuteronilus Mensae. They may be an easy way for future colonists of Mars to find water ice.
The binni is a species of cyprinid fish endemic to the Tigris–Euphrates Basin in the Middle East. This fish mostly inhabits lakes and marshes, especially in densely vegetated places where it also lays its eggs, but periodically it moves into rivers. This barbel is the only member in its genus, but was included in the "wastebasket genus" Barbus by earlier authors. It has declined in recent times due to habitat loss and overfishing.
Santa Marta crater is a newly confirmed impact crater in Piauí State, northeastern Brazil. It is 10 kilometres (6.2 mi) in diameter and it is estimated to have formed between 100 and 66 Ma, during the Late Cretaceous.
The area currently known as the United Arab Emirates (UAE) was formerly populated by inhabitants of a number of coastal and inland settlements, with human remains pointing to a pattern of transmigration and settlement as far back as 125,000 years. Prehistoric settlement in the UAE spanned the Neolithic, with a number of distinctive eras of ancient settlement including the Stone Age Arabian Bifacial and Ubaid cultures from 5,000 to 3,100 BCE; the Hafit period with its distinctive beehive shaped tombs and Jemdet Nasr pottery, from 3,200 to 2,600 BCE; the Umm Al Nar period from 2,600 to 2,000 BCE; the Wadi Suq culture from 2,000 to 1,300 BCE and the three Iron Ages of the UAE.
Tell Kunara is an ancient Near East archaeological site about 5 kilometres (3.1 mi) southwest of Sulaymaniyah in the Kurdistan region of Iraq. It lies on the Tanjaro River. The site was occupied from the Chalcolithic period to the early second millennium BC.