Articles tagged with Geology
A review paper synthesizes nearly 20 years of research on the Great Barrier Reef's responses to sea-level shifts, finding five distinct reef phases that formed, drowned, and reformed over 30,000 years. The study highlights the reefs' dynamic nature and reveals they were shaped by multiple environmental pressures.
Researchers found that 77% of rocks analyzed cooled at roughly the same time between 5-7 million years ago, providing direct evidence for a massive uplift event. This timing coincides with a previously known event during which the Pacific plate rotated, causing widespread deformation and uplift along the Ring of Fire.
Glenn Thackray takes the helm as GSA President, focusing on advancing geoscience research, education, and public service. With a strong background in leadership experience and passion for mentoring the next generation of scientists, Thackray aims to strengthen the Society's impact.
Researchers found that the Andes of west-central Argentina formed in four distinct and rapid pulses of activity, each lasting about 5 to 8 million years. This growth rate is faster and more punctuated than previously thought, outpacing the steady timeline expected from subduction.
A study by geoscientists at the University of Sydney reveals why some ancient continental edges became fertile sites for major mineral deposits, while others did not. The research developed a dynamic model of the Earth going back 1.8 billion years to identify how mineralised ores formed in specific places.
Researchers have found evidence of ancient human DNA on cave walls, even where bones or artifacts are absent. The discovery opens up new possibilities for studying prehistoric human behavior without disturbing archaeological deposits.
The Geological Society of America (GSA) is hosting GSA Connects 2026, a premier international gathering in the geoscience community. Abstracts are welcomed across various topics and disciplines, with a focus on cutting-edge research and interdisciplinary dialogue.
The 'Hess Evolution' expedition aims to uncover the origin and age of Hess Rise, a vast volcanic plateau. Researchers will analyze rock samples collected from depths of up to 6,000 meters to determine if they reveal systematic age patterns across the plateau.
A new study reveals that Antarctic glaciers are speeding up and moving towards the ocean due to meltwater draining from their surface to their base. This process, known as hydrofracturing, reduces friction and accelerates glacier movement.
A new study in Geology has discovered evidence of a major impact event about 3.5 billion years ago on the Moon, matching the ages of known impacts on Earth and in the asteroid belt. The discovery provides a key link to the history of the inner solar system and sheds light on catastrophic events that may have affected early life on Earth.
Researchers found that superheating in magma delays crystal formation, allowing magma to rise rapidly and potentially promoting dramatic lava fountaining behaviour. This discovery helps address a long-standing scientific debate on how magma's thermal history influences crystallisation processes before and during eruptions.
Researchers tracked microbial community shifts across six sites over four years and discovered that each site had its own stable microbial community. These communities were organized around two broad groups of microbes, with stable microbes maintaining core processes and responsive microbes capitalizing on new opportunities.
Joshua Martin will serve as a GSA-sponsored Congressional Science Fellow, bringing geoscience expertise to Capitol Hill. The announcement marks the 40th anniversary of the GSA-USGS Congressional Science Fellowship, which aims to integrate actionable Earth science into federal decision-making.
A new study reveals that the Antarctic ice sheet responded sharply to climate change following a major shift in Earth's ice age cycles. The simulation found that below a critical atmospheric CO2 level, the amplitude of Antarctic ice variations increases in response to changes in temperatures.
Researchers from Cambridge's Department of Earth Sciences mapped CO2-rich igneous rocks, finding their distribution is strongly tied to variations in Earth's lithosphere. The findings could guide the search for new rare earth deposits, particularly along the edges of thick and ancient continents.
The study shows a significant 5°C warming of intermediate waters at 800m depth in the equatorial Atlantic over the last 11,000 years. This warming is not mirrored by changes in tropical sea surface temperatures, indicating an extratropical origin.
The University of Utah is launching a groundbreaking testbed, SMART, to accelerate the development of breakthrough technologies in rare earth elements. The initiative aims to strengthen domestic supply chains and address the nation's growing need for critical minerals.
Researchers identify a 'vertical conveyor' mechanism that transports moisture from the mid-latitudes to the Asian Water Towers through a process of nocturnal decoupling. This process integrates up to 30% of westerlies-advected moisture into the local cycle without precipitation, sustaining near-surface moisture accumulation.
Researchers analyze helium isotope readings from geothermal springs in Zambia's Kafue Rift to confirm the presence of a weakness in the Earth's crust that has broken through to reach the mantle. The discovery could have significant economic implications for geothermal energy and potentially influence the future shape of Africa.
Reanalysis of 540-million-year-old microfossils from Brazil reveals they are not animal traces but rather communities of fossilized microscopic bacteria and algae. This finding suggests that invertebrates may not have existed or left marks during the Ediacaran period due to limited oxygen levels.
Researchers identified a massive landslide triggering a megatsunami in the Tracy Arm Fjord, Alaska, which posed distinct hazards due to confined environment. The study highlights potential new tools for identifying and monitoring landslide-generated tsunamis, including precursory warning signals.
A study redefines continental evolution by identifying relamination as a key mechanism shaping continents over billions of years. This process explains the origin of certain magmas and offers new insights into post-collisional magmatism, resulting in the formation of large granitic batholiths.
Researchers developed a new method to predict debris flows in post-fire landscapes, incorporating vegetation recovery, which reduces unnecessary warnings and improves accuracy. The updated method reflects changes in soil absorption and plant water uptake after wildfires, providing more accurate hazard maps and rainfall threshold guidance.
Researchers at TU Wien have demonstrated a remarkable mineralogical mechanism where certain minerals convert CO2 into solid carbonate quickly, mediated by water. This process enables rapid CO2 capture and storage in rocks, potentially solving the issue of atmospheric CO2 removal.
The University of Michigan study reveals that Napata, an ancient city in Sudan, benefited from the Nile's relatively stable flow and deposits of clay and silt. This landscape feature reduced flood risk while maintaining access to water, allowing for successful settlement and cultural development.
Researchers found that a dense piece of lithospheric mantle beneath the Hangay Mountains broke off and sank into the deeper mantle about 125-114 million years ago. This 'foundering' event triggered melting of the mantle, generated magma, and caused the overlying crust to dome upward.
Quaise Energy is building the world's first power plant using superhot geothermal energy, with the goal of producing at least 50 megawatts of clean electricity. The project aims to harness temperatures greater than 300 degrees C and validate its long-held hypothesis that higher subsurface temperatures can improve power production.
Researchers discovered that the river flowed into an upstream lake before flowing into the Grand Canyon, marking its transition to a continental-scale river. The study provides new insights into the formation of the Grand Canyon and the Colorado River's path.
Researchers used a novel technique to analyze millions of individual particles in Antarctic ice cores, revealing common dust sources during the last Ice Age. The study highlights the importance of atmospheric circulation changes and provides insights into ancient climate systems and potential future environmental shifts.
A study published in Geology found that up to 75.7% of landslides occur during low or no rainfall periods, with early-stage rainfall reaching the sliding surface through three runoff supply modes and two migration stages. The team recommends mass monitoring, public education, and engineering mitigation measures to prevent such disasters.
Researchers suggest that an ancient lake overflowed 5.6 million years ago, establishing the Colorado River's course through the Grand Canyon. The study used uranium-lead dating to confirm a shared sediment source and indicate that the ancestral river was connected by 6.6 million years ago.
Scientists at MIT have developed a new wave model called PlanetWaves that predicts how waves will behave on planetary bodies with different liquids, atmospheres, and gravity. The model reveals that gentle winds can create massive waves on Titan, while hurricane-force winds barely move the surface of lakes on exoplanet 55-Cancri e.
A new study reveals that human transformations in land cover have a substantially greater influence on landslide fatalities than physical factors, particularly in low- and lower-middle-income nations. This research highlights how increasing human pressure on nature worsens the vulnerability of socioeconomically disadvantaged people.
Research reveals strong global link between ancient subduction zones and formation of rare earth element deposits and carbonatites. Ancient tectonic processes are critical to locating economically viable rare mineral deposits.
A team of scientists using Curiosity rover images discovered ancient Martian ripple marks, indicating intense sandstorms swept through Gale crater around 3 billion years ago. The findings provide insight into the planet's atmosphere at that time, suggesting conditions were higher and closer to Earth's than they are currently.
A newly discovered fossil site in southwest China reveals that many key animal groups evolved before the start of the Cambrian Period. The study found fossils of ancestors of modern starfish, sea cucumbers, and chordates, pushing back the timeline of complex animal life by at least 4 million years.
A new study reveals that climate change is accelerating the rate of sublimation, causing less ice to melt into water that feeds reservoirs and rivers. The research found evidence of increasing sublimation rates from 6,000 to 600 years ago, with implications for future snow droughts.
A new study reexamines the geological context of Monte Verde II and finds that it is Middle Holocene in age or younger, challenging earlier interpretations. The researchers suggest that earlier dates were influenced by Late Pleistocene-age materials from older sediments that were redeposited into the site via erosion.
A new study from Washington State University sheds light on the formation of mineral deposits in Idaho's Silver Valley and the Idaho Cobalt Belt. Ancient brines helped concentrate metals and transport them to the surface, where they formed rich veins of ore.
Researchers found that the river recovered its natural shape within four years after mining stopped, but the local economy did not bounce back. The study recommends a fairer, more sustainable model for river sediment extraction to minimize environmental and human impacts.
Researchers have uncovered a new, exceptionally preserved fossil site in Newfoundland, Canada, dating back to 551 Ma. This find dramatically alters our understanding of the 'Kotlin Crisis,' the first extinction event in animal history, which is now estimated to have resulted in an astonishing 80% loss of biodiversity.
Researchers have identified a field of tektites in Brazilian territory, which may have been formed by a single cosmic collision event. The geraisites, named after the Brazilian state of Minas Gerais where they were first discovered, have distinct geochemical signatures and date back approximately 6.3 million years.
Researchers at MIT identify conditions that enable 'back-propagating fronts' in simple faults, which may have been undetected in past seismic data. The findings suggest boomerang quakes could be more common than previously thought.
Researchers reveal that seafloor weathering may be responsible for the discrepancy in Snowball Earth event durations, with faster rates linked to longer glaciations. This finding has significant implications for predicting future climate change.
Researchers propose a new explanation for wrinkly textures in rocks, suggesting that microbes lived in deepwater environments and used chemosynthetic energy. This finding could lead to a reevaluation of fossil records and the classification of ancient formations.
A new study led by University of Liverpool scientists used advanced electron microscopy techniques to analyze olivine crystals. The research found that a significant proportion of the crystals showed evidence of 'b' dislocation slip, challenging previous understanding and improving our understanding of Earth's mantle deformation.
Research on Mars' volcanic systems shows that they were shaped by long-lasting and evolving magma beneath the planet's surface. The study found that these volcanoes experienced multiple eruptive phases, transitioning from early fissure-fed lava emplacement to later point-source activity.
A new study investigates the dynamics of a complex fault zone under Seattle, revealing that secondary faults rupture more frequently than previously thought. Researchers hope to refine their understanding of these faults and determine how much hazard they pose to Seattle's four million residents.
Scientists have discovered evidence of repeating climate cycles operating every few years to decades during the Cryogenian glaciation, a period known as Snowball Earth. The findings suggest that these cycles were likely exceptions rather than the norm, and were triggered by small patches of open ocean in the tropics.
An international team has successfully documented and sampled freshened water within a zone nearly 200 metres thick beneath the ocean floor. This discovery sheds light on offshore freshened groundwater systems and their relevance to coastal communities relying on groundwater for freshwater supply.
A new study in Geology suggests that massive undersea volcanism triggered at least four Triassic extinctions. Marine large igneous provinces were found to be a key driver of these events, accounting for half of the extinctions with an identifiable geological trigger.
Researchers at the University of Plymouth have discovered a method to increase muon lifetime using intense laser pulses. By applying quantum interference principles, they aim to develop new scientific facilities that utilize muons instead of electrons.
A recent study published in Geology found that new single-celled marine species evolved rapidly, occurring in some places in under two thousand years. This rapid evolution helps scientists understand how ocean ecosystems respond to environmental changes and could provide insights into future mass extinctions.
Researchers discovered that a significant drop in calcium levels in the ocean led to a massive decrease in carbon dioxide, driving global cooling and ending the planet's greenhouse era. The study suggests that changes in seawater chemistry played a key role in shaping climate history.
The Geological Society of America (GSA) has increased the award amount of the J. David Lowell Field Camp Scholarship from $2,000 to $3,000 per recipient starting with the 2026 summer field season. This increase is in honor of Dr. Paul E. Potter and aims to support students pursuing geoscience education and training.
A new study using sediment drill cores reveals a link between solar cycles and the stability of fast ice in Antarctica. The research team found that changes in solar activity disrupt zonal winds over the Southern Ocean, leading to the retreat of sea ice along the coast.
Researchers are utilizing the SWOT satellite to study how rivers and streams shape the Earth's surface, transforming scale in river studies. By covering all rivers worldwide, SWOT enables tracking of dam failures and understanding their long-term effects on ecosystems.