A team of researchers has discovered a nearly complete skull of the large predatory dinosaur Majungatholus, which lived during the Late Cretaceous period. The fossil, found on the island of Madagascar, sheds light on the habits and characteristics of this enigmatic theropod dinosaur.
A Duke University geological study proposes that earthquakes triggered the massive and puzzling swarms of icebergs believed to have separated from the Canadian ice sheet. The researchers hypothesize that periodic crustal failure along the eastern Canadian coast, caused by the growing weight of the ice sheet, led to the quakes, which th...
A zone of high-grade copper ore has been found on the Pacific floor, a discovery that could lead to similar valuable deposits on land. The finding is attributed to a deep-sea exploration project led by UC Davis geologist Robert Zierenberg.
A 65 million-year-old meteorite impact caused massive landslides and subsidence along the Yucatán Peninsula's continental margin. Giant submarine avalanches then swept across the Gulf of Mexico and Caribbean, displacing billions of gallons of water.
Researchers use high-tech Ground Penetrating Radar to uncover ancient shell middens, revealing Native American cooking practices and sea-level changes in the area. The technique allows for non-invasive exploration of saltwater marshes, providing new insights into the region's history.
The Global Positioning System (GPS) is enabling geologists to study earthquakes in real time, revealing incremental motion and slow squeezing within plates that can lead to earthquakes. This technology is improving earthquake hazard studies by allowing for more accurate predictions of seismic activity.
Researchers estimate a new volcano could erupt in northern California within 400,000 years due to a magma chamber discovered 20 kilometers into the earth's crust. The Lake Pillsbury area, near San Francisco, is identified as a possible location for the eruption.
Researchers have found evidence of molten rock two thousand miles beneath the Earth's surface, challenging scientists' understanding of mantle convection. The discovery was made using seismic waves measured in Norway and detected a slurry of molten rock across a 300-by-600-mile region deep beneath Tonga.
Researchers use GPS satellites to monitor the movement of an entire continent and record the yearly growth of the Andes Mountains. The study shows that satellite data can help geologists calculate accumulating stresses along fault lines, promising improved earthquake hazard estimation.
A new study reports that ancient dinosaurs were killed by sudden avalanches of water-soaked sand flowing down the sides of dunes, burying their bodies swiftly. The research also uncovered the first dinosaur footprints ever found in the Gobi Desert.
Scientists confirm evidence of past water on Mars, including minerals and sedimentation patterns. Theories about the disappearing water include evaporation, seepage, or storage at Martian poles.
A new study found significant climatic change in the Arctic without human influence, contradicting previous assumptions. The research, led by Dr. Marianne Douglas, analyzed diatom assemblages in lake and pond sediments, revealing warming trends that began in the 1840s and ended the Little Ice Age.
Drilling in the Caribbean Basin uncovered evidence of massive volcanic eruptions 55 million years ago, which triggered a dramatic climatic change and rapid ocean water inversion. This led to the release of sea floor methane into the atmosphere, causing global warming and speeding evolution of new species.
Researchers discover the San Andreas fault cuts straight through the crust and Moho, affecting stress buildup and earthquake hazard predictions. The study improves understanding of rock boundaries, types, and stress accumulation to better assess seismic risks.
A team of Stanford scholars presents a comprehensive study on the forces that shaped Asia during the Mesozoic era, revealing the dynamic processes that formed mountain ranges and volcanic island arcs. The research provides new insights into the region's geology and its potential for oil and gas reserves.
Researchers at Ohio State University have developed a new database to aid in the discovery of gold and silver deposits in three western states. The system combines geologic and related map information to provide a comprehensive overview of mineral content, allowing for more accurate assessments of potentially valuable areas.
David Meyer presents evidence that ancient crinoid Uintacrinus could float using a new model. The model explains the organism's ability to support its weight and collect food particles at the sea surface.
The USGS is providing crucial information for restoring the South Florida ecosystem through multidisciplinary research activities. The latest data on pre-development environmental conditions, contaminant transport, and physical conditions in Florida Bay are being shared to inform land and water resource managers.
Researchers found calcite grains in mid-continent areas showed deformation patterns consistent with shearing stress, contradicting the idea that these regions are 'quiet and tectonically dead'. The study provides new insights into tectonic processes and offers critical input for computer modeling of plate dynamics.
A study published in Environmental Geology suggests that a magnitude 5 or 6 earthquake could raise the water table by up to 750 feet at the Yucca Mountain storage site, leading to potential flooding. The researchers used computer modeling based on geological data and historical quakes to make their predictions.
Researchers use strontium isotopes to identify salmon stream origins, allowing for unprecedented accuracy in tracking adult salmon. The technique has promise for restoring salmon populations and studying their migrations.
A Carnegie Mellon robot, 'Nomad', will traverse 125 miles in the Atacama Desert, exploring navigation, geology and remote operations. The robot can be teleoperated by science center visitors, offering real-time data and visualization.
A team of researchers from Penn State is investigating the connection between sedimentation patterns at the river's mouth, land use patterns in the basin, and climate variability. They plan to analyze sediment cores using lead isotope ratios and pollen to link core layers with climate and sedimentary regimes.
Researchers find massive methane deposits in Blake Ridge area, equivalent to 35 billion tons, and estimate 7% of global carbon stored. The discovery suggests a significant role in past climate change and potential for future energy source.
Geologists have discovered that the Ontong Java Plateau, a 40km-thick oceanic feature, formed from eruptions over just three million years, defying current geologic theories. The rocks' unique geochemical characteristics suggest they were created in high-pressure environments, with pressures potentially exceeding eight kilobars.
Researchers discovered a cycle of strong and weak trade winds that triggered massive iceberg armadas across the North Atlantic during the last ice age. The study found a suborbital rhythm of 8,400 years in the strength of tropical winds, which governed the melting of massive ice sheets in the Northern Hemisphere.
A recent earthquake in Peru has bolstered a researcher's theory that large earthquakes will not occur in a specific region near the quake site. The study found a correlation between plate shape and seismic activity, identifying areas of low seismicity called seismic gaps.
Researchers from UC Berkeley have disproved the hypothesis that the Earth's inner core is a perfectly aligned mass of iron crystals. Instead, they found that the crystals align themselves like boats in a circular eddy, driven by the rise of hotter iron toward the surface. This finding has implications for modeling the Earth's magnetic ...
A new study suggests the Yucatan asteroid impact was particularly deadly to North America due to its oblique angle, spreading energy northwest. The severe extinction intensity was highest downrange of the impact in North America.
Researchers Ebersole and Miller analyzed fossil data and found no regional differences in extinction rates during the Late Permian mass extinction event. They also discovered that environmental zones and latitude had little impact on the severity of the extinction, suggesting a global cause.
A graduate student's daily satellite inspection spotted the eruption, providing an early warning system. The discovery also triggered a computerized ash-plume tracking model to forecast the ash cloud's movement and issue alerts to airlines.
Researchers found that liquids behave like soft solids when squeezed into thin films, with implications for fields like tribology, geology, and biology. This understanding could lead to the development of more effective lubricants and insights into natural phenomena like earthquakes.
A new model developed by University of California geophysicists predicts the size and shape of tectonic plates by assuming a 30-fold increase in mantle viscosity with depth. This assumption creates a cyclic flow or convection cell with dimensions close to the plate sizes, explaining why continents are broken into large plates.
The University of Wyoming's Institute for Energy Research has developed technology to evaluate deep natural gas resources, which is gaining interest from Asian nations. This technology helps understand fluid-flow relationships and pressure, unlocking hydrocarbon resources in deeper parts of sedimentary basins.
Researchers have found a way to identify ancient ash using chemical transformations, providing new insights into prehistoric lifestyles. The discovery could help explain how early humans used fire for cooking, warmth, and protection.
Orrin Pilkey, a nationally known authority on beach hazards, will discuss the risks of building on beaches during a media briefing in Myrtle Beach. The briefing will provide tips on minimizing storm damage and avoiding high-risk areas.
Marine geologists find detailed marine record of late Pleistocene era fires on land, shedding light on natural burning's impact on climate and ecosystems. The study reveals charcoal from fires on land was transported to ocean sediments via winds and rivers.
Scientists at UC Berkeley developed a 3D model that explains the size and shape of tectonic plates, predicting they are larger than previously thought due to increased mantle viscosity. The model simulates convection cells in the mantle, resulting in large plates and subduction zones.
Duke University professors Orrin Pilkey and David Bush will lead a media tour and briefing to highlight the risks of building on beaches prone to hurricane damage. The tour will show better and worse places to build along the Grand Strand, with tips for minimizing storm damage.
Scientists at Yale University found that seasonal temperature trends have been arriving earlier each year since the turn of the century, contradicting predictions by two leading computer models. Regional patterns and variations in temperature changes were also discovered, highlighting limitations in current climate modeling.