Articles tagged with Geology
Researchers at the University of Copenhagen have tracked the evolution of glaciers in East Antarctica using hundreds of old aerial photographs dating back to 1937. The study reveals that the ice has remained stable and grown slightly over almost a century, partly due to increasing snowfall.
Researchers have found that lithium can be extracted from Pennsylvania wastewater with high efficiency, potentially supplying up to 40% of the country's demand. This could bring the US closer to meeting its goal of producing all lithium domestically by 2030.
Daily tracking of ice melt has been made possible with a new method developed by researchers at DTU using 61 national GPS stations in Greenland. The study provides significant advancement in monitoring ice mass loss and understanding the processes behind the ice melting.
Researchers employ a geology tool to analyze hydrogen atoms in cancer cells, finding a distinct ratio compared to healthy tissue. This discovery may lead to new ways to spot cancer early on and inform strategies for studying its growth and spread.
Researchers used a dynamic model to chart the changing landscape and estimate human migration routes across Sahul, with results consistent with previous findings. The study suggests a radiating wave of migration following rivers and coastlines, correlating with known migration corridors.
The study found that elevated nutrient levels impacted reef growth, leading to the establishment of slower-growing and more sediment-tolerant coral communities in deeper water. This provides evidence on early Holocene water quality and demonstrates the capacity of the reef to grow under conditions typically considered unsuitable.
Researchers have found ancient rocks in Greenland that retain signatures of a magnetic field with a strength of at least 15 microtesla, extending the magnetic field's age by 200 million years. The discovery sheds light on the planet's early conditions and may have played a critical role in making Earth habitable.
Scientists have recovered a 3.7-billion-year-old record of Earth's magnetic field, revealing it to be remarkably similar to today's field. The study provides the oldest estimate of the strength of Earth's magnetic field derived from whole rock samples.
Researchers found that weathering in the region leads to an overall CO2 uptake, but near-surface processes only determine the CO2 balance in areas with a thick and cold crust. In contrast, the western side of the Central Apennines is a significant CO2 emitter due to deep-seated outgassing from carbonate rocks.
Researchers have found evidence of a multifault network at subduction interfaces, contradicting the long-held concept of a single main fault. This discovery has significant implications for modeling earthquakes and predicting risks, which could lead to improved forecasts and mitigation strategies.
Scientists developed a reliable proxy to reconstruct ancient marine oxygen levels, revealing a significant rise during the Late Paleozoic era. This finding suggests early animals evolved in oxygen-poor oceans, providing critical context for studying exoplanet atmospheres.
Recent advancements in AI and IoT have improved earthquake prediction by identifying patterns in historical seismic data. However, limitations such as computational complexity, data quality, and interpretability remain, requiring a comprehensive approach to integrate diverse datasets.
Researchers at the University of Texas at Austin propose a new step in the tectonic process that raises seafloors into mountains, involving oceanic crust influencing magma chamber formation. This discovery has implications for understanding back arc basins and their role in regulating the planet's climate.
The Lunar Environment Monitoring System, developed by UMD researchers, will track seismic activity on the moon's surface during the upcoming Artemis III mission. The system's data will help prepare NASA for a long-term presence on other planetary bodies.
Researchers at MIT have developed a method to analyze the behavior of granular materials, revealing their internal forces and shapes in 3D detail. This breakthrough may lead to better understanding of landslides and industrial processes.
A recent study from the University of Copenhagen found that the oldest Scandinavian bedrock originated in Greenland approximately 3.75 billion years ago. The discovery provides new insights into the formation of continents and the emergence of life on Earth, highlighting the importance of fixed continents for supporting life.
A University of Arizona-led study explores sulfur's significance in the emergence of life on Earth, shedding light on its possible role as an RNA precursor. The research suggests that sulfur's reactivity could have hindered its availability for origin-of-life chemistry.
Scientists discovered a 2.4-million-year cycle linking Mars and Earth orbits to changes in deep-sea currents. This cycle affects global warming patterns, with increased solar radiation causing warmer climates and more vigorous ocean circulation.
A new study found that atmospheric carbon dioxide (CO2) drawdown from chemical weathering of rocks is limited to a narrow range of moderate erosion rates. This has significant implications for understanding the constraints of weathering-mediated CO2 drawdown and resolving conflicting data on its impact on the climate.
A team of geologists from the University of Colorado Boulder has made a breakthrough in understanding the emergence of the Spanish Peaks. The study reveals that the peaks first formed around 24 million years ago when magma welled up from deep within Earth's crust, but didn't break through to the surface until about 17 million years ago.
A new study suggests that the Thwaites Glacier and Pine Island Glacier began experiencing significant glacial retreat in the 1940s, driven by an extreme El Niño climate pattern. This finding corroborates previous research on ice sheet dynamics and highlights the importance of external factors in controlling glacier behavior.
Historical spy-satellite photographs provide insights into past ecosystem changes, species populations, and human influences on the environment. The study's findings can aid conservation planning and ecosystem restoration efforts by mapping historical ecological baselines.
Researchers found that oxygen availability increased in shallow subsurface waters despite global warming during the Paleocene-Eocene Thermal Maximum. This increase was consistent with predictions from ocean circulation models, which suggest a compensation effect may help explain moderate levels of extinction observed during this period.
A massive dike formed beneath Grindavík, Iceland, reaching an unprecedented subsurface magma flow rate of 7400 cubic meters per second. Fracturing and tectonic stress drove the high flow rate, providing insight into dike formation and hazard potential for similar systems.
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.
Researchers found that historically low volcanic carbon dioxide emissions, combined with weathering of a large pile of volcanic rocks in Canada, led to the prolonged Sturtian glaciation. The team used plate tectonic modeling and computer simulations to investigate the cause and duration of this ice age.
A recent study using synchrotron experiments found that elastic differential stress can develop mineral fabrics in rocks, even before irreversible strain accumulates. This challenges conventional knowledge that only differential stress is needed for fabric development. The research has implications for understanding the role of stress ...
A team of scientists found evidence that the moon's shrinkage led to surface warping in its south polar region, including areas proposed for crewed Artemis III landings. Shallow moonquakes can devastate hypothetical human settlements on the moon due to loose sediments and unstable surface slopes.
A manned submersible has found a 26m-high fault scarp of the 2011 Tohoku-oki megaquake in the Japan Trench, revealing a coseismic movement of the fault. The study suggests a 80–120m slip of the fault, contributing to our understanding of tsunami genesis and hazards.
The UK is launching four new PhD training centers to boost expertise in environmental science, focusing on flood management, freshwater quality, sustainable mineral resources, and wetland conservation. These centers will support the next generation of researchers who will go on to build careers in research, business, and public service.
Researchers have discovered lipid fossils in ancient rocks, providing clues about the evolution of life. The findings suggest that a shift in animal feeding strategies occurred around 1.6 billion years ago, with some species abandoning phytosterol production as they obtained this nutrient from algae.
Researchers find complex microbial communities forming giant mounds of rock in a harsh desert environment, resembling ancient stromatolites. The discovery provides an unprecedented look at the earliest stages of life on Earth and may hold clues about life on Mars.
New data analysis reveals that regional temperature patterns are crucial for evaluating climate models, with warmer temperatures in the North Atlantic and a cooler North Atlantic found to be more accurate. This approach provides better insights into the spatial impact of climate change and its effects on ecosystems and human societies.
A clay mineral called smectite, formed through plate tectonics, efficiently traps organic carbon and could help buffer global warming. Smectite's accordion-textured folds effectively trap dead organisms, preventing them from being consumed by microbes.
Researchers uncover 10 new trilobite species in Thai sanctuary, shedding light on Cambrian-Ordovician period and connecting Thailand to parts of Australia. The discovery helps date the age of fossils and better understand global geography.
Researchers recreated ancient seawater to study nutrient availability, finding a preference for metals like manganese and molybdenum. Greenalite formation removed zinc, copper, and vanadium from seawater, matching the metal choices of early lifeforms.
A study found that underground car parks in Germany, Austria, and Switzerland warm the groundwater throughout the year. The team proposes using geothermal energy and heat pumps to extract excess heat from the ground, which could supply sustainable heat to cities like Berlin.
Researchers from China University of Geosciences have clarified the extent of Greater India, a single plate of 2,000 to 3,000 km, before it subducted under Asia. This finding resolves questions surrounding the age of the collision and the emergence of geological structures in the region.
A new study led by University of Maryland Professor Sujay Kaushal reveals that human activities are making the planet's air, soil, and freshwater increasingly salty. This acceleration of the natural salt cycle poses an 'existential threat' to ecosystems and human health if current trends continue.
Gilleaudeau aims to generate a new composite carbon record and test the hypothesis that carbon excursion was linked to global ocean anoxia. His research will produce critical data on the initiation of the Late Paleozoic Ice Age.
Researchers analyzed whiteschist from the Dora Maira Massif to study rapid upward movements, revealing a sharp decrease in pressure or decompression. This suggests that UHP rocks may not have reached a depth of 120 kilometers before returning to the surface.
GEOMAR researchers used 3D seismics to recreate the 1650 Kolumbo volcano eruption, finding that a landslide followed by an explosion created the devastating tsunami. The study provides valuable insights for monitoring submarine volcanic activity and potentially developing early warning systems.
Geologists at Utrecht University reconstructed the history of lost continent Argoland, which was fragmented into microcontinental shards. The team found that Argoland is still present, albeit in fragments, beneath the islands of Indonesia and Myanmar, revealing a puzzle that fits seamlessly between neighboring geological systems.
The 2024 Ocean Sciences Meeting brings together 5,000 scientists to discuss breaking research and critical issues affecting ocean sustainability. The biennial event will feature an online-only scientific session on Wednesday 21 February.
The expedition aims to study the geological system and evolution of hydrothermal ecosystems in the Red Sea. The team will use modern seafloor observation systems and instruments like the ROV Kiel 6000 to locate and map hydrothermal habitats.
Researchers at MIT have discovered that the sounds produced by rocks under different pressures can reveal their depth and strength, helping scientists identify unstable regions below the surface. This new method could aid in drilling for geothermal energy and understanding the Earth's crust.
Researchers reconstructed a massive tectonic plate from fragments found in mountain belts around the world. They discovered that the plate, named Pontus, existed for at least 150 million years and had a significant impact on Earth's geological history.
Ancient human footprints discovered in White Sands National Park have been confirmed to be over 20,000 years old. Multiple independent age estimates from radiocarbon and optically simulated luminescence methods support the previous study's claims, showing humans inhabited southern North America during the Last Glacial Maximum.
A new study by the University of Oxford found that ancient carbon in rocks can release significant amounts of CO2 into the atmosphere, rivaling volcanic emissions. This discovery challenges current understanding of the natural carbon cycle and has important implications for climate change modeling.
A study led by the University of Texas at Austin found that certain groupings of iron atoms in the Earth's inner core are able to move about rapidly, changing their places in a split second. This collective motion could help explain numerous intriguing properties of the inner core and shed light on its role in powering Earth's geodynamo.
A novel approach combines models with MCMC inversion to predict CO2 and SO2 emissions, carbon export productivity, and remineralization changes across the K/Pg boundary. The results show decoupled CO2 and SO2 emissions, evidence for a two-stage drop in carbon export productivity, and no clear signal of a volatile impulse at the boundary.
Researchers have identified that ancient quakes occurred in shallow faults on the Puget Lowlands in western Washington, which could lead to another devastating event. The study used tree rings to pinpoint the dates of these quakes and found a link between them, suggesting regional hazard models may need to be updated.
Researchers found that ancient Amazonians intentionally created dark earth by modifying the environment to improve soil fertility. This practice allowed for large and complex societies to thrive, with stored carbon remaining in the soil for hundreds to thousands of years.
A recent study by KIT researchers found that geothermal power plants in the Upper Rhine Valley and Northern German Basin could cover between 2 and 12 percent of Germany’s annual lithium demand. The model developed for the study describes lithium extraction in the Upper Rhine Valley, with parameters transferable to other joint systems.
The 2022 Hunga Tonga eruption generated an extremely fast-moving and destructive submarine debris flow that severed telecommunication cables and reshaped the surrounding seafloor. The flow traveled over 100 kilometers across the seafloor at speeds of up to 122 km/h, excavating scours and channels into the seabed.
A 2020 excavation at Auckland's Mangere Wastewater Treatment Plant yielded an unprecedented 266 fossil species, including the world's oldest known flax snails and extinct sawshark spine. The discovery provides valuable insights into New Zealand's geological history.
Researchers found 27 million cubic meters of sediment moved through Houston waterways, equivalent to 40% of the Mississippi River's annual discharge. The study suggests river straightening can exacerbate sediment bypass, decreasing reservoir holding capacities by up to 1.6%
Researchers extract ocean temperatures from barnacle shells, which provide clues to the plane's drift path and origin. The method may help investigators narrow their search in the Indian Ocean.
A team of scientists discovered evidence for sustained wet-dry cycling on early Mars, essential for prebiotic chemical evolution and the emergence of life. The findings suggest that ancient Martian mudstones may have hosted conditions conducive to complex organic molecule formation and pre-biotic chemistry.
A team of researchers from Stanford University found that the foundations of the Gangdese Arc were already much higher than anticipated, long before any tectonic collision occurred. This challenges existing theories about past climate and biodiversity in the Himalayan region.