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UrduThe lake level of the Dead Sea is currently dropping by more than one metre every year – mainly because of the heavy water consumption in the catchment area.
Tag: Geology
Let’s talk about the 1,800-plus ‘young’ volcanoes in the U.S. Southwest
The landscape of the southwestern U.S. is heavily scarred by past eruptions of monogenetic volcanoes, and a new study marks a step toward understanding future risks for the region.
Some of the world’s oldest rubies linked to early life
While analyzing some of the world’s oldest coloured gemstones, researchers from the University of Waterloo discovered carbon residue that was once ancient life, encased in a 2.5 billion-year-old ruby.
What is soil made of?
Weathering of rocks and organic matter important in soil formation
Geological cold case may reveal critical minerals
Researchers on the hunt for why cold eclogites mysteriously disappeared from geological records during the early stages of the Earth’s development may have found the answer, and with it clues that could help locate critical minerals today.
Space odyssey: Argonne scientists among the first to study asteroid fragments
Argonne scientists at the Advanced Photon Source are among the first to study tiny fragments of near-Earth asteroid 162173 Ryugu, collected by a Japanese space mission. These fragments could tell us long-hidden secrets about how our planet and solar system were formed.
What lies beneath: Volcanic secrets revealed
Lava samples have revealed a new truth about the geological make-up of the Earth’s crust and could have implications for volcanic eruption early warning systems, a University of Queensland-led study has found.
Volcanic eruptions may have spurred first ‘whiffs’ of oxygen in Earth’s atmosphere
A new analysis of 2.5-billion-year-old rocks from Australia finds that volcanic eruptions may have stimulated population surges of marine microorganisms, creating the first puffs of oxygen into the atmosphere. This would change existing stories of Earth’s early atmosphere, which assumed that most changes in the early atmosphere were controlled by geologic or chemical processes.
Understanding Antarctic ice historic changes could reveal future changes
The Antarctic Ice Sheet, Earth’s southern polar ice sheet, has grown and receded and grown again over millions of years.
Volcanoes acted as a safety valve for Earth’s long-term climate
Scientists at the University of Southampton have discovered that extensive chains of volcanoes have been responsible for both emitting and then removing atmospheric carbon dioxide (CO2) over geological time.
Muddied waters: sinking organics alter seafloor records
The remains of microscopic plankton blooms in near-shore ocean environments slowly sink to the seafloor, setting off processes that forever alter an important record of Earth’s history, according to research from geoscientists, including David Fike at Washington University in St. Louis.Fike is co-author of a new study published in Nature Communications.
New research suggests explosive volcanic activity on Venus
Traces of the gas phosphine point to volcanic activity on Venus, according to new research from Cornell University.
In lonely desert landscapes, hunting for clues about pyroclastic surges
The history of pyroclastic surges is written in the landscapes they ravage. Volcanic dunes and other deposits hold debris from ancient eruptions, as do craters marking sites of ancient blasts. This study focuses on Ubehebe and El Elegante.
Flinders Ranges virtual tourists to be ‘teleported’ into the deep past for World Heritage bid
Sir David Attenborough has named it one of his favourite places on Earth, and the world will soon see why via an immersive virtual tour of the iconic Flinders Ranges.
Scholarship and Practice of Undergraduate Research Issue Features Undergraduate Research in Community Colleges
The spring 2021 issue of Scholarship and Practice of Undergraduate Research (SPUR), the academic journal of the Council on Undergraduate Research, focuses on dynamic programs and initiatives advancing undergraduate research in community colleges.
Denniston awarded NSF grant to study climate change
The National Science Foundation (NSF) has awarded a nearly half-million-dollar research grant to Cornell College Professor of Geology Rhawn Denniston and a team of researchers to study climate variability.
Hidden within African diamonds, a billion-plus years of deep-earth history
Diamonds are sometimes described as messengers from the deep earth; scientists study them closely for insights into the otherwise inaccessible depths from which they come.
Geologist Karen G. Havholm Re-elected as Treasurer of the Council on Undergraduate Research
Karen G. Havholm—former asst vice chancellor for research and sponsored programs, and former director of the Center of Excellence for Faculty and Undergraduate Student Research Collaboration at UW–Eau Claire—has been elected to a second term as treasurer of the Council on Undergraduate Research.
Twice as much carbon flowing from land to ocean than previously thought
Every year 600-900 million tons of carbon flow through rivers to the ocean either as particles or in dissolved form.
When Volcanoes Go Metal
What would a volcano – and its lava flows – look like on a planetary body made primarily of metal? A pilot study offers insights into ferrovolcanism that could help scientists interpret landscape features on other worlds.
The world’s oldest crater from a meteorite isn’t an impact crater after all
Several years after scientists discovered what was considered the oldest crater a meteorite made on the planet, another team found it’s actually the result of normal geological processes.
Geological engineers create landslide atlas of Kerala, India
The Landslide Atlas of Kerala sets a new standard for determining risk in a landslide-prone region and will help the residents and policymakers of the state make decisions to better mitigate life-threatening disasters.
New book reveals Charles Darwin’s cultural impact in unprecedented detail
NUS historian of science Dr John van Wyhe has co-published a groundbreaking new book on Charles Darwin which shows for the first time the extent of his cultural impact over the past 160 years. A decade in the making, this volume demonstrates that Darwin is the most influential scientist who has ever lived, having the most species named after him and he is also the most translated scientist in history.
Scholarship and Practice of Undergraduate Research Issue Features Nontraditional Approaches to Research
The winter 2020 issue of Scholarship and Practice of Undergraduate Research (SPUR), the academic journal of the Council on Undergraduate Research, focuses on unusual approaches to undergraduate research such as research for chefs and a video game for biology majors.
When using pyrite to understand Earth’s ocean and atmosphere: Think local, not global
Scientists have long used information from sediments at the bottom of the ocean to reconstruct the conditions in oceans of the past. But a study in Science Advances raises concerns about the common use of pyrite sulfur isotopes to reconstruct Earth’s evolving oxidation state. These signals aren’t the global fingerprint of oxygen in the atmosphere, according to new research from Washington University in St. Louis.
Upending Complex Crystal Formation
PNNL researchers discover a new route to forming complex crystals
How Rocks Rusted on Earth and Turned Red
How did rocks rust on Earth and turn red? A Rutgers-led study has shed new light on the important phenomenon and will help address questions about the Late Triassic climate more than 200 million years ago, when greenhouse gas levels were high enough to be a model for what our planet may be like in the future.
Research finds link between CO2, big volcano eruptions
Volcanologists from the University of Georgia and two Swiss universities found a link between carbon dioxide and the volume of gas trapped in magma, which could help predict the intensity and magnitude of a volcanic eruption.
Wet and wild: There’s lots of water in the world’s most explosive volcano
There isn’t much in Kamchatka, a remote peninsula in northeastern Russia just across the Bering Sea from Alaska, besides an impressive population of brown bears and the most explosive volcano in the world. Kamchatka’s Shiveluch volcano has had more than 40 violent eruptions over the last 10,000 years.
The Faults in Our Earth
CSU geology experts study the active land California inhabits to better understand earthquakes and predict the location and intensity of future temblors.
Research Can Help Pawpaws Gain New Ground
Despite its tropical-sounding name and exotic-tasting In a recent article in Plant Ecology, Associate Professor The pawpaw is extremely rare in New York State, with only 20 known locations. Stephen Tulowiecki, a geographer at SUNY Geneseo, studied the conditions that pawpaws favor, and developed a model to predict locations where pawpaws may grow and identify areas that might sustain newly introduced trees.
High-impact research: How meteorite strikes may change quartz on the Earth’s surface
Scientists using a unique combination of capabilities at the Advanced Photon Source have learned more about how meteorites affect one of the most abundant materials in the Earth’s crust.
What are the promises and perils of geoengineering?
In a new book, “Has It Come to This? The Promises and Perils of Geoengineering on the Brink,” Holly Jean Buck and colleagues weigh in on social, ethical and political dimensions of deliberate, large-scale interventions in the planet’s climate.
Field geology at Mars’ equator points to ancient megaflood
Floods of unimaginable magnitude once washed through Gale Crater on Mars’ equator around 4 billion years ago – a finding that hints at the possibility that life may have existed there, according to data collected by NASA’s Curiosity rover and analyzed in joint project by scientists from Jackson State University, Cornell University, the Jet Propulsion Laboratory and the University of Hawaii.
Clay subsoil at Earth’s driest place may signal life on Mars
Diverse microbes discovered in the clay-rich, shallow soil layers in Chile’s dry Atacama Desert suggest that similar deposits below the Martian surface may contain microorganisms, which could be easily found by future rover missions or landing craft.
Geologists simulate soil conditions to help grow plants on Mars
Humankind’s next giant step may be onto Mars. But before those missions can begin, scientists need to make scores of breakthrough advances, including learning how to grow crops on the red planet.
Most landslides in western Oregon triggered by heavy rainfall, not big earthquakes
Deep-seated landslides in the central Oregon Coast Range are triggered mostly by rainfall, not by large offshore earthquakes.
Victoria Orphan: Then and Now
Victoria Orphan is the James Irvine Professor of Environmental Science and Geobiology in the Division of Geological and Planetary Sciences at the California Institute of Technology.
Hidden secrets written in stone:
It’s one of the best-known geological heritage sites around the world, filled with fossils and glacial secrets. Now, thanks to virtual reality technology, the ice-age past of Hallett Cove Conservation Park is revealed in a new, gamified VR experience – Beyond the Ice – and is launched this week as part of National Science Week.
FSU geologists publish new findings on carbonate melts in Earth’s mantle
Geologists from Florida State University’s Department of Earth, Ocean and Atmospheric Science have discovered how carbon-rich molten rock in the Earth’s upper mantle might affect the movement of seismic waves.
What Happens in Vegas, May Come From the Arctic?
Climate records from a cave in the southern Great Basin show that Nevada was even hotter and drier in the past than it is today, and that one 4,000-year period in particular may represent a true, “worst-case” scenario for the Southwest and the Colorado River Basin — and the millions of people who rely on its water supply.
Insights into climate change during origin of dinosaurs
In a new study in the journal Gondwana Research demonstrated that the Carnian Pluvial Episode affected the southern hemisphere, specifically South America, which strengthens the case that it was a global climate event.
Quenching the need for water quality data in West Virginia
A new portal is increasing access to surface and groundwater water quality data from shale gas regions around the state to inform stakeholders about trends in water quality.
Geoscientists Create Deeper Look at Processes Below Earth’s Surface with 3D Images
Geoscientists at The University of Texas at Dallas recently used supercomputers to analyze massive amounts of earthquake data to generate high-resolution, 3D images of the dynamic geological processes taking place far below the Earth’s surface.
In the Arctic, spring snowmelt triggers fresh CO2 production
Studies have shown the Arctic is warming roughly twice as fast as the rest of the world, and its soil holds twice the amount of carbon dioxide as the atmosphere. New research from San Diego State University finds that water from spring snowmelt infiltrates the soil and triggers fresh carbon dioxide production at higher rates than previously assumed.
The fossil detective
Uncovering what drives the evolution of new animals is key for understanding the history of life on Earth. Geologist James Lamsdell is embarking on this exploration as a recipient of the National Science Foundation’s CAREER award.
Carbon emission from permafrost soils underestimated by 14%
Picture 500 million cars stacked in rows. That’s how much carbon—about 1,000 petagrams, or one billion metric tons—is locked away in Arctic permafrost.
Looking Up to the Stars Can Reveal What’s Deep Below
Using a new technique originally designed to explore the cosmos, scientists have unveiled structures deep inside the Earth, paving the way towards a new map revealing what Earth’s interior looks like.
Utah’s arches continue to whisper their secrets
Two new studies from University of Utah researchers show what can be learned from a short seismic checkup of natural rock arches and how erosion sculpts some arches—like the iconic Delicate Arch—into shapes that lend added strength.
Study shows diamonds aren’t forever
The study, published in Nature, was conducted by a team of international resources, including two from Tulane University.