Articles tagged with Radiocarbon Dating
Researchers used snail shells to recreate prehistoric cyclones in South East Queensland, Australia, by analyzing growth rings and stable isotopes. The study showed that snails responded to extreme rainfall events, not annual wetness, providing a new climate archive for the region.
Paleontologists used carbon-dating to analyze over 7,500 fossils, revealing how sediment accumulation rates affect the preservation of fossils. By understanding these rates, researchers can determine the age of a fossil assemblage and extract valuable data from it.
A nearly 2.5-meter-long woolly mammoth tusk was discovered in Taimering, Bavaria, Germany, along with over 70 additional bones and bone fragments. The tusk shows clear evidence of human cutting marks, suggesting that the animal was butchered by Palaeolithic hunters and gatherers.
The study reconstructs the genetic profile of a small group of Neanderthals from Stajnia Cave, Poland, providing a coherent genetic picture of Neanderthals in this part of Europe. The discovery sheds light on the distribution of a particular Neanderthal maternal lineage in western Eurasia.
A new study reveals that seabird guano was a driving force behind the Chincha Kingdom's sociopolitical expansion on Peru's coast. The nutrient-rich bird droppings boosted corn yields and supercharged agriculture, fueling the kingdom's economy, trade, population growth, and regional influence.
A 2,800-year-old study using Carbon-14 dating reveals that the Siloam Pool and Dam were constructed as part of a comprehensive water management system for ancient Jerusalem. The findings point to early urban planning and impressive engineering skills in addressing climate change.
Researchers confirm human presence in the Americas between 23,000 and 21,000 years ago with a new study that uses ancient mud to date footprints. The findings contradict previous understanding of the peopling of North America and have sparked a reevaluation of archaeological theories.
Researchers analyzed a centuries-old Austrian mummy and found it remarkably well-preserved due to an unusual embalming technique involving wood chips, twigs, fabric, and zinc chloride. The mummy, of a local parish vicar, was identified through interdisciplinary analysis, including radiocarbon dating and stable isotope patterns.
Researchers at Osaka Metropolitan University developed an engineered yeast that can produce record-high yields of D-lactic acid from methanol, a key compound used in biodegradable plastics and pharmaceuticals. The optimized yeast strain achieves a 1.5-fold boost in production compared to other methanol-based methods.
Researchers have found an unexpected accumulation of rare beryllium-10 isotopes in Pacific seabed samples, which could serve as a global time marker for dating geological archives spanning millions of years. The team proposes two possible explanations for the anomaly: changes in ocean currents or astrophysical events 10 million years ago.
Researchers analyzed human remains from a settlement site in Kosenivka, Ukraine, providing insights into the lives of ancient people. The study found that meat made up less than 10% of their diets, with plant-based foods being the primary source of nutrition.
A new study led by University of Arizona researcher François Lanoë reveals that Indigenous people in the Americas interacted with early dogs and wolves as far back as 12,000 years ago. The discovery sheds light on how long humans have had relationships with the ancestors of today's dogs.
Researchers from Institute of Science Tokyo successfully developed a multi-element perovskite catalyst that selectively oxidizes light alkanes to alcohols with high yield and selectivity. The breakthrough catalyst operates under mild conditions and exhibits excellent stability and reusability.
Researchers at Penn State found that Indigenous communities played key roles in the adoption and dispersal of peaches across the continent. Peaches were likely widespread across Interior Southeast settlements as early as 1620, 100 years after Spanish expeditions in Florida and Georgia.
Researchers at University of Arizona discovered a spike in carbon-14 dating to 664 B.C., pinpointing the last known extreme solar storm event. The study provides crucial data for scientists studying sun's activity and offers insights into massive storms' effects on Earth's atmosphere.
A WVU researcher says ancient tree rings can record rare and extreme space weather events, including geomagnetic storms. The study aims to better understand how to prepare for such events and mitigate their impact on communication satellites and astronauts.
A new study reveals that extreme El Niño events are responsible for the increased sensitivity of CO₂ in the atmosphere to tropical temperatures. This finding challenges previous assumptions about climate change and highlights the importance of understanding internal climate variability.
A new study from Simon Fraser University has provided the clearest picture yet of when mammoths roamed Vancouver Island. The study found that mammoths lived on the island up to 45,000 years ago, with the youngest sample dated around 23,000 years old.
A study published in PLOS ONE found cut marks on fossils of a glyptodont, a giant relative of armadillos, that are consistent with known marks made by stone tools. The placement of these marks indicates a butchering sequence targeting areas of dense flesh.
Researchers achieved a new method for synthesizing α-substituted carbonyl compounds using a palladium-catalyzed anti-Michael addition reaction. The method produces high-yield products and can be applied to various nucleophiles, including indoles and aromatic compounds.
A revised radiocarbon calibration curve for the period between 433-250 BCE has been established, allowing for improved date estimates on Greek shipwrecks. The study confirms the Kyrenia Ship's final voyage around 280 BCE, slightly later than previous estimates.
Researchers have discovered ancient termite mounds in Namaqualand, South Africa that date back a staggering 34,000 years. The mounds, which are still inhabited by termites, provide valuable insights into prehistoric climate conditions and natural carbon sequestration processes.
A team led by the Institute of Archaeological Sciences at the University of Bern has precisely dated timber from the archaeological site of Dispilio in northern Greece, dating back to 5259 BC. This is made possible by using high-energy particles from space, known as Miyake events, which can be reliably dated to this period.
A research team has synthesized a cutting-edge manganese-fluorine catalyst with exceptional oxidizing power, capable of extracting electrons from compounds. The catalyst facilitates efficient electron loss from toxic toluene derivatives, marking a significant breakthrough in catalytic research.
A 5,900-year-old DNA analysis in Denmark found two nearly complete population turnovers, with the hunter-gatherer population being driven out by farmer populations. The researchers suggest that both violence and new pathogens likely contributed to the mass deaths.
Genetic analysis of bone fragments at the Ranis site in Germany confirms that modern humans reached Northwestern Europe 45,000 years ago, overlapping with Neanderthals. The findings suggest that the invasion of Europe by modern humans helped drive Neanderthals to extinction.
Researchers have analyzed mollusk shells from polar expeditions to gain insights into the ocean's natural chemistry before significant nuclear testing in the 1960s. The findings suggest that the tests disrupted the balance of carbon-14 in the atmosphere, making it challenging to date fossil samples using traditional methods.
Researchers found that coast redwood's massive carbon reserves fueled growth of new leaves after a catastrophic fire, allowing the forest to begin regenerating. However, many trees did not survive, and it may take centuries for the ecosystem to fully recover.
A collaborative effort between scientists from the Natural History Museum of Utah and cavers led to the discovery of fossils spanning over 3,000 years in Boomerang Cave. The findings revealed a faithful reflection of mammal diversity in the area, including species unknown to the region.
A new study published in PLOS ONE provides detailed insights into the timing of events in ancient Gezer, a city known from Egyptian, Assyrian, and Biblical texts. The radiocarbon dates suggest that some proposed correlations between the archaeological record and ancient texts are plausible.
A new study has found that northern peatlands have accelerated in expansion over the past 1,500 years, with an average growth rate of approximately one centimeter per year. This increase in peatland area is significant for carbon sequestration and storing ecosystems.
New research confirms the age of the White Sands footprints using multiple lines of evidence, including radiocarbon dating and pollen analysis. The study provides strong support for the 21,000 to 23,000-year age estimate, resolving a controversy sparked by earlier results.
Researchers found evidence of intentional post-mortem modifications to human remains, including fractures and scrapes, at a cave in southern Spain. These alterations suggest that the ancient humans reused and repurposed their own burial sites for practical purposes.
Researchers used radiocarbon dating and time-series modeling to study the timing and causes of megafauna extinctions at Rancho La Brea Tar Pits. The team found that a sharp decline in population occurred between 13,070 to 12,900 years ago, coinciding with warming and drying climate change and increased fires sparked by humans.
A new study enhances radiocarbon dating by creating a precise record of atmospheric shifts over 14,000 calendar years BP. This improvement allows for more accurate dating of sub-fossil samples, enabling researchers to reconstruct past environmental and climate changes during glacial times.
Researchers develop innovative method to analyze ancient bones, making collagen quantifiable and mapping possible. This technique supports the selection of samples for radiocarbon analysis, preserving valuable material and reducing destruction.
Researchers discovered extensive use of iron staples in Notre-Dame's construction, dating back to the 1160s, making it a pioneering example of iron-based architecture. The study sheds light on the medieval Parisian iron market and its role in shaping the city's history.
Archaeologists have discovered evidence of ritualistic belief and economic factors intertwined for Neolithic people in northwest Arabia. Excavations at a mustatil east of AlUla revealed animal offerings, human interment, and suggest repeated pilgrimages, challenging previous understandings of the region's culture.
The new Radiocarbon 3.0 method provides valuable new insights into the earliest human history, starting with the interaction between Homo Sapiens and Neanderthals in Europe. This is achieved through updated radiocarbon pretreatment, latest AMS instrumental advances, and the application of the Bayesian model coupled with the new IntCal20.
Researchers used radiocarbon ages of re-exposed black mosses to determine glacier advance phases in the northern Antarctic Peninsula. The study found three distinct advances, indicating cooler and potentially wetter conditions than today.
Researchers discovered 13 full and fragmentary projectile points in Idaho dating back to around 15,700 years ago, providing significant details about early human life in the Pacific Northwest. The findings suggest a complex technology and potential genetic-cultural connections between ice age peoples of Northeast Asia and North America.
A study published in the Journal of Archaeological Science reveals that a domestic dog lived in the Palaeolithic period 17,000 years ago in the Erralla cave in the Basque Country. The bone remains identified as Canis lupus familiaris, making it one of Europe's most ancient domestic dogs.
Researchers found the skeletal remains of a 5-8 year old spider monkey in Teotihuacán, Mexico, which provides the earliest evidence of primate captivity and translocation. The discovery also reveals gift diplomacy between Teotihuacán and Mayan elite, challenging previous beliefs about Maya presence in the region.
A joint study by TAU and Hebrew University accurately dated 21 destruction layers at 17 archaeological sites in Israel, using geomagnetic field reconstruction. The new data verify Biblical accounts of Egyptian, Aramean, Assyrian, and Babylonian military campaigns against the Kingdoms of Israel and Judah.
A study by University of Utah professor Thure Cerling and colleagues used carbon isotope science to analyze four seizures of ivory in Angola, Hong Kong, Singapore, and Uganda. The results show that the ivory dates back to the 1980s, similar in age to ivory in Burundi's national stockpile, strengthening suspicions of ivory stockpile theft.
Sturt Manning's statistical analysis has narrowed the time range for the Thera volcano eruption to between 1609–1560 BCE with a 95.4% probability. This new timeline synchronizes Eastern Mediterranean civilizations and rules out ancillary theories, potentially rewriting history.
A new study published in Cell Reports Methods introduces a dating method called Temporal Population Structure (TPS) that uses artificial intelligence to accurately date human remains up to 10,000 years old. The method has shown promise in analyzing approximately 5,000 human remains from the Late Mesolithic period and modern times.
Researchers combined nuclear fallout records with coral skeletons to define the Anthropocene period, which marks a milestone for humanity's impact on Earth's environment. The study provides clear evidence of plutonium fallout from 1954, linking sediments and coral records.
A University of Maine study found that two major glaciers in West Antarctica are losing ice at unprecedented rates, potentially contributing up to 3.4 meters to global sea level rise. The researchers used radiocarbon dating and relative sea-level data to determine the glaciers' stability over the past 5,000 years.
Researchers have re-evaluated chicken remains from over 600 sites worldwide, revealing that domestication occurred around 1,500 BC in Southeast Asia. Chickens were initially regarded as exotica and only later used as a food source.
A new SDSU study used radiocarbon dating to determine the timing of the last seven periods of filling during the Late Holocene, revealing six earlier lake fills between 1618–1636 and 1486–1503. The research sheds light on both the history of human occupation in the area and its seismic past.
A team of researchers has confirmed that a volcanic eruption in 1628 B.C. was not Thera but Alaskan volcano Aniakchak II, helping to narrow down the potential dates for the Thera eruption's occurrence between 1611 B.C., 1562-1555 B.C. and 1538 B.C.
Prehistoric plant remains found in a Lake Varese settlement match crops from oldest Swiss pile dwellings. The discovery suggests settlers from the western Mediterranean may have played a key role in spreading pile-dwelling culture north of the Alps.
A new study published in PNAS found that large mammals died out at the end of the last ice age due to a warming climate and vegetation expansion. Rewilding efforts with animals like bison and horses are unlikely to reverse this trend, as climate change remains the primary driver of ecosystem changes.
A Washington State University research team used advanced radiocarbon dating to determine the age of ancient stone monoliths in southern Ethiopia's Gedeo zone. The findings push back the construction date by a millennium, shedding light on the region's culture and trade networks.
A new study reveals the oldest known punctate ivory pendant found in Eurasia, dating back 41,500 years. The pendant provides direct evidence of Homo sapiens' use of decorative motifs in Poland.
Recent advances in radiocarbon knowledge have improved our understanding of climate processes, solar activity, geophysics, and the carbon cycle. Researchers developed a more detailed record of atmospheric radiocarbon extending back 55,000 years, helping to understand Earth's past and project future changes.
A rare collection of non-returning boomerangs from Cooper Creek, South Australia, has been analysed, revealing a diverse range of activities and daily lives of Aboriginal people. The artefacts date back to circa 1650–1830 AD and were likely used for fighting, hunting, digging, fire management, and possibly in ceremonies.
A new study suggests that human presence on the Falkland Islands dates back to around 3450 B.C.E., with evidence of fire activity and stone projectile points consistent with Indigenous South American technology. The research indicates that people likely visited the islands for short-term stays, leaving few cultural materials behind.
Researchers used radiokrypton dating to study the origin and flow of freshwater and saltwater in the Floridan Aquifer. The study found that some samples contained 40,000-year-old saltwater from just before the last glacial maximum, highlighting the impact of rising sea levels on coastal aquifers.