Articles tagged with Geology
Researchers studying ancient rhino teeth found at Nebraska's Ashfall Fossil Beds State Historical Park discovered that prehistoric rhinos lived in large herds. The animals' limited mobility suggests they didn't respond to the volcanic eruption or migrate seasonally, instead likely dying from prolonged exposure to ash and lack of food.
Researchers have discovered that the underside of the North American continent is experiencing 'cratonic thinning', a phenomenon where the continent is slowly losing its stability and rock layers. This process, driven by the subduction of the Farallon Plate, may eventually stop as the plate sinks deeper into the mantle.
A 30-meter sediment core from the Great Blue Hole in Belize provides the longest recorded storm frequency data for the Atlantic, with 574 storm events over 5,700 years. The research reveals a steady increase in tropical storms and hurricanes in the southwestern Caribbean due to climate change.
Research reveals that mountain uplift and dynamic topography significantly shape biodiversity over geological timescales. By simulating millions of years of tectonic uplift, scientists found a direct link between species richness and the magnitude and pace of mountain building, with topographic relief stabilizing species equilibrium.
Researchers have made highly accurate calculations of global sea level rise in the early Holocene using a unique dataset from the North Sea region. The findings show that rates of sea level rise peaked at over 1 metre per century during two phases, with a total rise of around 38 metres over 11,000 years.
Researchers found evidence of biological material in desert rocks, suggesting the presence of microorganisms that can survive without light. The discovery has sparked interest in the global carbon cycle and its potential impact on climate change.
Emily Orzechowski joins the Geological Society of America with extensive experience in legislative relations, science policy, and geoscience research. She will lead GSA's advocacy efforts to support the geoscience community and its contributions to society.
A new study led by University of Maryland geologist Sujay Kaushal finds that multiple threats are making fresh water saltier, including land-based pollution and saltwater intrusion. The researchers offer a framework for predicting and preventing the issue, which affects ecosystems, agriculture, and drinking water supplies.
Researchers modelled mantle convection to show African LLVP has older, better mixed material than Pacific LLVP, which is enriched in subducted oceanic crust. This difference affects heat extraction from Earth's core, posing a challenge for observations and models.
A USC study has found a drastic increase in building collapses in Alexandria, Egypt, due to rising sea levels and seawater intrusion. The researchers used a three-pronged approach to assess the impact of shoreline changes on the city's buildings.
Since the turn of the millennium, glaciers worldwide have lost around 273 billion tonnes of ice per year, corresponding to about five and a half times the volume of Lake Constance. The loss of ice from glaciers has led to a rise in sea level of 18 millimetres, making it the second strongest driver of sea level rise after ocean warming.
Stream networks in the US increase significantly with seasonal rainfall and snowmelt, influencing sediment transport and aquatic habitats. The study provides a framework for forecasting climate-driven changes in stream networks across the continental US.
A global program called TIMES aims to synchronize age models for geological climate records, enabling the study of past warm climate stages and their impact on future climate pathways. The project is crucial for understanding the Earth's climate dynamics and obtaining reliable information about past climate events.
The EU-funded ForMovFluid project aims to understand the origin of critical raw materials, essential for renewable technologies and energy transition. By combining laboratory techniques and field work in four countries, researchers will increase knowledge on fluid movement in the Earth's crust.
Researchers found evidence that repeated earthquakes like the 2024 Noto Peninsula earthquake shaped the region's topography. The study used satellite radar images to measure displacements caused by the earthquake, resulting in over 4m of uplift and emergence of new terraces along the northern coast.
A research team developed an autonomous geological assessment tool that uses machine learning to measure dip angles and directions in rock facets with high accuracy, achieving rates of up to 99.4%. The R-C-D-F method eliminates joint bands while preserving joint embedment points, making it ideal for modern infrastructure projects.
Researchers used Re–Os dating to uncover the timing of Japan's geological history, revealing key insights into the region's evolution. The study focused on Besshi-type VMS deposits, which provided precise markers for the timing of subduction and ridge subduction beneath Japanese Islands.
A novel field experiment in Austria reveals that compounding climate conditions can fundamentally reshape how water moves through soils in temperate grasslands. Elevated atmospheric CO2 and warming disrupt post-drought soil water flow and grassland vegetation water use.
Researchers from Göttingen University and Max Planck Institute for Solar System Research discovered the Moon formed from material ejected from the Earth's mantle. The findings support the idea that water reached Earth early in its development, contrary to the prevailing assumption of late impacts.
A new study reveals fossilized chewing lice eggs in mid-Cretaceous amber, associated with enantiornithine feathers. The discovery provides insight into early coevolution between bird hosts and ectoparasites, shedding light on the origins of modern lice.
Scientists have developed a new technique to study faults, which can improve earthquake forecasts by determining the origins and directions of past rupture events. By analyzing curved scratches left on the fault plane, researchers can pinpoint where earthquakes start and spread, providing valuable insights for modeling future scenarios.
The study discovered significant alterations in the region's state of stress and deformation following the 1975 Kalapana earthquake. The researchers found that Kīlauea's south flank experienced greater displacement prior to the earthquake, pointing to changes in mechanical properties influencing seismic activity.
Geology researchers from UTEP are partnering with Bhutanese scientists to better understand and mitigate the impact of glacial floods on rural mountain villages. The project aims to use geophysical methods to identify changes in water levels and sediment transport, potentially helping vulnerable villages create early warning systems.
A new study from the University of Colorado at Boulder has uncovered strong evidence for a global 'Snowball Earth' event, where massive glaciers covered the entire planet down to the equator hundreds of millions of years ago. The findings provide critical insights into the planet's geologic history and the emergence of life on Earth.
A new study reveals that the Amazon rainforest is threatened by global warming and deforestation, which can trigger a domino effect on the entire system. The analysis of residual pollen and carbon residues suggests that the Atlantic Meridional Overturning Circulation (AMOC) plays a crucial role in shaping the Amazon ecosystem.
The Geological Society of America has acquired the award-winning geology book series from Mountain Press Publishing Company, expanding its publications and broadening engagement with the public. The acquisition includes copyrights and licensing agreements for select titles, which will continue to be distributed by Mountain Press.
A new standard in lithium processing has been set with the innovative EDTA-aided loose nanofiltration (EALNF) technology, which extracts both lithium and magnesium simultaneously. The method achieves 90% lithium recovery and turns leftover magnesium into a valuable product, reducing waste and its environmental impact.
A new Stanford review of hundreds of studies found little to no sediment dating back to the 34 million-year-old Eocene-Oligocene climate transition, contradicting conventional models. The researchers attribute this globally extensive gap in the geologic record to vigorous ocean bottom currents triggered by major climate shifts.
Researchers found that rising temperatures accelerate weathering of rocks in the Canadian Arctic, leading to increased CO2 release and a positive feedback loop. This process could contribute significantly to climate change, with predicted emissions doubling by 2100 under moderate emission scenarios.
A study reveals a global unconformity, or gap in the rock record, around the edges of every continent at the time of the greenhouse-to-icehouse climatic transition. The finding challenges traditional ideas about sediment movement and accumulation in deep oceans.
Researchers from Göttingen University identified the low crystallisation temperatures and groundwater origin of amethyst geodes in northern Uruguay. The study proposes a new model explaining their formation, which could improve exploration techniques and lead to sustainable mining strategies.
A new study finds that a nearby eroding river gorge is causing Mount Everest's peak to rise by 15-50 meters over the past 89,000 years. The research suggests that the loss of landmass due to erosion is causing the mountain to spring upwards by as much as 2 millimeters a year.
The SUPERSLUG initiative aims to forecast the impact of sediment slugs on river catchments and communities. The project will use a range of sensors and numerical models to provide comprehensive predictions of where and how long-term effects might be felt, up to decades or centuries after an event.
Researchers found inorganic nanostructures surrounding deep-ocean hydrothermal vents that mimic molecules essential for life. These structures can harness energy and convert it into electricity, sparking interest in applying this technology to industrial blue-energy harvesting.
Scientists discovered ancient stromatoporoids survived the Late Devonian extinction and continued to thrive as major reef-builders during the Carboniferous Period. The findings shed light on the resilience and adaptability of marine ecosystems.
Researchers propose that Mars' early thick atmosphere could have been locked up in the planet's clay surface due to slow chain reactions between rocks and gases. The clay is estimated to hold up to 80% of the initial, early atmosphere, potentially recovered and converted into propellant for future missions.
Non-traditional field trip locations, such as urban settings and Disney Resorts, offer accessible outdoor educational opportunities. These locations showcase cross sections of corals and reef debris, ancient Ordovician fossils, and outcrop analogs that provide valuable insights into modern reef systems and broader earth history.
A team of researchers found evidence of a lush, diverse rainforest on the Falkland Islands up to 30 million years ago. The South Atlantic archipelago was covered in cool, wet woodland similar to present-day rainforests found in Tierra del Fuego.
A new AI tool called SandAI can analyze sand grains to determine their history, including whether they were shaped by wind, water, or glacial movements. This technology has the potential to help with modern-day forensic investigations into illegal sand mining and related issues.
A new study examines the relationship between the 2024 M7.6 Noto Hanto earthquake and a preceding earthquake swarm in Japan's Noto Peninsula. The research highlights the importance of monitoring seismic swarms and understanding fluid migration patterns to enhance predictive models for future seismic events.
A recent meta-analysis found that the Messinian Salinity Crisis significantly altered Mediterranean biodiversity, with 66.8% dissimilarity between species before and after the crisis. The study also showed that only a few endemic species survived the event, while new species were introduced following the reconnection to the Atlantic.
Researchers investigate the effect of oxygen content on mantle rock melting and early Earth magma ocean formation. The study reveals that oxygen fugacity significantly influences melting temperatures, suggesting current models need revision.
A study by ETH Zurich scientists found that global warming's effects on plant recovery can last for thousands to millions of years. The research team discovered that the severity of climate shifts and the speed at which carbon is sequestered affect the duration of climate warming.
A nearly continuous 1268-meter-long drill core of serpentinized abyssal mantle peridotite has provided new insights into Earth's deep geology and the potential biogeochemical conditions involved in the origins of life. The findings reveal significant mineralogical variations, including low pyroxene content and oblique melt migration.
Researchers found that powerful waves triggered deep within the Earth can cause continental surfaces to rise by over a kilometre. The study explains why parts of continents experience substantial uplift and erosion, forming sweeping elevated regions known as plateaus.
A new study confirms that the center of Greenland's ice sheet melted away in recent geological past, exposing a green, tundra landscape. The discovery suggests that the giant ice sheet is more fragile than previously thought and increases the risk of sea-level rise, potentially leading to catastrophic flooding in coastal cities.
Scientists have developed a state-of-the-art computational model predicting land, ice and global sea-level interactions. The model estimates that reducing greenhouse gas emissions could slow melting Antarctic ice enough to allow Earth uplift to partially stabilize the ice sheet and prevent some future sea-level rise.
A new study from the University of Illinois Chicago proposes an alternative theory for the formation of Earth's continents, challenging the long-held leading theory. The researchers used computer models to investigate the origin of Archaean zircons, which date back to 2.5-4 billion years ago.
Scientists from UC San Diego detected geochemical signatures of magma pooling and melting beneath the surface during Iceland's recent volcanic episode. The study found that massive pooling of magma preceded the eruption, contrasting initial hypotheses for magma ascent straight from the mantle.
Researchers analyzed rocks collected from seafloor, finding they date back to at least 2.5 billion years ago and have retained a stable oxidation state since then. The discovery provides new evidence on Earth's geologic history and sheds light on the planet's evolution.
A new junior professorship in Earth System Science at Mainz University, sponsored by the Volkswagen Foundation, will establish a specialized lab for paleoclimate research. The lab will analyze high-resolution sediments formed thousands to millions of years ago to reconstruct past climates, including seasonal patterns.
A study by University of Texas at Dallas geoscientist Dr. Robert Stern and colleague Taras Gerya suggests that plate tectonics, oceans, and continents are necessary for the evolution of intelligent civilizations. The researchers propose refining the Drake equation factor to account for these requirements, which could explain the Fermi ...
Researchers estimate that between 280 to 360 meteorites strike Mars each year, forming impact craters greater than 8 meters across. The study uses seismic data from the NASA InSight Mission to make this estimate, which is five times higher than previously thought.
A new study reveals the Jøtul hydrothermal field in the Arctic Ocean, which is rich in minerals and metals. The discovery of high concentrations of methane indicates a significant interaction with magma, contributing to ocean acidification and climate change.
A new study reports the discovery of exceptionally well-preserved Cambrian-age trilobite fossils from Morocco, providing detailed insights into their anatomy. The fossils' rapid entombment in volcanic ash has preserved both hard exoskeletons and soft tissue appendages with fine details.
A recent study published in Terra Nova suggests that Iceland's Reykanes Peninsula will experience recurring, moderately sized volcanic eruptions due to interconnected magma plumbing system. The eruptions pose significant risks to local populations and critical infrastructure.
A team of researchers created an advanced method for automatic microfossil detection and analysis using AI. The method has shown great potential in utilizing AI to analyze vast amounts of microfossil data, potentially helping geologists better utilize wellbore samples.
Researchers used simulations to model the erosion of Titan's shorelines, finding that waves are the most likely explanation for the moon's lakes and seas. The team found that wave activity could have shaped the coastlines of lakes and seas on Titan.
A team of researchers led by Virginia Tech's Shuhai Xiao discovered a 550 million-year-old sea sponge that challenges previous theories about its evolution. The fossil, found in China, suggests that early sponges may have had soft-bodied skeletons and only later developed mineralized structures.
A recent study has identified over 300 distinct types of bacteria in Roman Baths water, including those with antibiotic-producing capabilities. These microorganisms show promise as a potential source of novel natural products to combat antibiotic resistance.