Geology

Geology News -- ScienceDaily Geology news. From the discovery of new properties of deep earth and finds in fossil magma chambers to fossil fuels and more.

  • Diamonds show Earth still capable of ‘superhot’ surprises
    on September 21, 2017 at 1:55 pm

    Diamonds may be ‘forever’ but some may have formed more recently than geologists thought. A study of 26 diamonds, formed under extreme melting conditions in the Earth’s mantle, found two populations, one of which has geologically ‘young’ ages. The results show that certain volcanic events on Earth may still be able to create super-heated conditions previously thought to have only existed early in the planet’s history before it cooled. The findings may have implications for diamond prospecting. […]

  • Mathematics predicts a sixth mass extinction
    on September 20, 2017 at 10:21 pm

    Scientists have analyzed significant changes in the carbon cycle over the last 540 million years, including the five mass extinction events. They have identified 'thresholds of catastrophe' in the carbon cycle that, if exceeded, would lead to an unstable environment, and ultimately, mass extinction. […]

  • UK oil and gas reserves may last only a decade, study suggests
    on September 19, 2017 at 4:31 pm

    The UK has low oil and gas resources and limited prospects for fracking, according to a new analysis by scientists, who recommend a shift towards greater use of renewable, clean energy. […]

  • Changes in Earth's crust caused oxygen to fill the atmosphere
    on September 18, 2017 at 3:18 pm

    New research has uncovered a direct link between changes in the earth's crust three billion years ago and the introduction of free oxygen to the atmosphere. Without these changes, oxygen could have been suppressed in earth's crust forever, so the findings help explain the emergence of life on our planet. […]

  • Measuring a crucial mineral in the mantle
    on September 13, 2017 at 11:29 pm

    New research resolves 40 years of debate about the strength of olivine, the most abundant mineral in the Earth's mantle. Measuring the strength of olivine is critical to understanding how strong tectonic plates are, which, in turn, matters to how plates break and create subduction zones. […]

  • Rapid climate changes across northern hemisphere in the earliest Middle Pleistocene
    on September 12, 2017 at 1:30 pm

    By studying climate changes that took place thousands of years ago, we can better understand the global climate system and predict Earth's future climate. A multi-organization research team has discovered evidence of rapid climate changes on a millennial-to-centennial scale that occurred 780 to 760 thousand years ago. […]

  • Earthquake triggers 'slow motion' quakes in New Zealand
    on September 11, 2017 at 4:27 pm

    Slow slip events, a type of slow motion earthquake that occurs over days to weeks, are thought to be capable of triggering larger, potentially damaging earthquakes. In a new study, scientists have documented the first clear-cut instance of the reverse -- a massive earthquake immediately triggering a series of large slow slip events. […]

  • Half-a-billion-year-old fossils shed light animal evolution on Earth
    on September 11, 2017 at 4:26 pm

    Scientists have discovered traces of life more than half-a-billion years old that could change the way we think about how all animals evolved on Earth. […]

  • New acid-free magnet recycling process created
    on September 7, 2017 at 5:25 pm

    A new rare-earth magnet recycling process dissolves magnets in an acid-free solution and recovers high purity rare earth elements. […]

  • Massive Antarctic volcanic eruptions linked to abrupt Southern hemisphere climate changes
    on September 4, 2017 at 7:10 pm

    New findings document a 192-year series of volcanic eruptions in Antarctica that coincided with accelerated deglaciation about 17,700 years ago. […]

  • Volcanic eruptions drove ancient global warming event
    on August 30, 2017 at 5:22 pm

    A natural global warming event that took place 56 million years ago was triggered almost entirely by volcanic eruptions that occurred as Greenland separated from Europe during the opening of the North Atlantic Ocean, according to new research. […]

  • Machine-learning earthquake prediction in lab shows promise
    on August 30, 2017 at 4:25 pm

    By listening to the acoustic signal emitted by a laboratory-created earthquake, a computer science approach using machine learning can predict the time remaining before the fault fails. […]

  • More than expected hidden beneath Andean Plateau
    on August 23, 2017 at 5:12 pm

    Seismologists investigating how Earth forms new continental crust have compiled more than 20 years of seismic data from a wide swath of South America's Andean Plateau and determined that processes there have produced far more continental rock than previously believed. […]

  • Ancient Earth’s hot interior created 'graveyard' of continental slabs
    on August 22, 2017 at 3:59 pm

    Plate tectonics has shaped the Earth's surface for billions of years: Continents and oceanic crust have pushed and pulled on each other, continually rearranging the planet's façade. As two massive plates collide, one can give way and slide under the other in a process called subduction. The subducted slab then slips down through the Earth's viscous mantle, like a flat stone through a pool of honey. […]

  • Earth history: How continents were recycled
    on August 22, 2017 at 2:32 pm

    Researchers have used computer simulations to analyse how plate tectonics have evolved on Earth over the last three billion years. They show that tectonic processes have changed in the course of the time, and demonstrate how those changes contributed to the formation and destruction of continents. The model reconstructs how present-day continents, oceans and the atmosphere may have evolved. […]

  • Dino-killing asteroid could have thrust Earth into two years of darkness
    on August 21, 2017 at 7:10 pm

    Tremendous amounts of soot, lofted into the air from global wildfires following a massive asteroid strike 66 million years ago, would have plunged Earth into darkness for nearly two years, new research finds. This would have shut down photosynthesis, drastically cooled the planet, and contributed to the mass extinction that marked the end of the age of dinosaurs. […]

  • Hot spot at Hawaii? Not so fast
    on August 18, 2017 at 3:58 pm

    Geophysicists use a new model to conclude that volcanic hot spots around the globe aren't moving as fast as recently thought. […]

  • Mystery of how first animals appeared on Earth solved
    on August 16, 2017 at 5:47 pm

    Research has solved the mystery of how the first animals appeared on Earth, a pivotal moment for the planet without which humans would not exist. […]

  • How friction evolves during an earthquake
    on August 16, 2017 at 12:49 pm

    Using high-speed photography and digital image correlation techniques, engineers show that friction along a faultline has a complex evolution during an earthquake that is dictated, in part, by slip velocity: the sliding of the two sides of the fault against one another. […]

  • Supervolcanoes: A key to America's electric future?
    on August 16, 2017 at 12:49 pm

    Researchers show that lake sediments preserved within ancient supervolcanoes can host large lithium-rich clay deposits. A domestic source of lithium would help meet the rising demand for this valuable metal, which is critical for modern technology. […]

  • New plate adds plot twist to ancient tectonic tale
    on August 14, 2017 at 2:44 pm

    Misfit plates in the Pacific led scientists to the discovery of a microplate between the Galapagos Islands and the South American coast. […]

  • Experiments cast doubt on theory of how Earth was formed
    on August 14, 2017 at 1:28 pm

    New geochemical research indicates that existing theories of the formation of the Earth may be mistaken. […]

  • World's largest volcanic range may lurk beneath Antarctic ice
    on August 14, 2017 at 1:27 pm

    West Antarctica's vast ice sheet conceals what may be the largest volcanic region on Earth, new research has revealed. […]

  • Lunar dynamo's lifetime extended by at least 1 billion years
    on August 9, 2017 at 6:20 pm

    Astronomers report that a lunar rock collected by NASA's Apollo 15 mission exhibits signs that it formed 1 to 2.5 billion years ago in the presence of a relatively weak magnetic field of about 5 microtesla. That's around 10 times weaker than Earth's current magnetic field but still 1,000 times larger than fields in interplanetary space today. […]

  • Successful filming of fastest aurora flickering
    on August 9, 2017 at 6:02 pm

    Researchers conducted a 3 year continuous high-speed imaging observation at Poker Flat Research Range, Alaska, USA, and identified the physics behind the flickering of aurora. At the same time, they discovered faster flickerings at speeds of 1/60-1/50 and 1/80 of a second. […]

  • RAVAN CubeSat measures Earth's outgoing energy
    on August 9, 2017 at 6:01 pm

    An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate. […]

  • Laser mapping project shows effects of physical changes in Antarctica's Dry Valleys
    on August 8, 2017 at 6:53 pm

    Researchers have publicly released high-resolution maps of Antarctica's McMurdo Dry Valleys, a globally unique polar desert. […]

  • Similar characteristics found in human-induced and natural earthquakes
    on August 2, 2017 at 7:25 pm

    Humanmade and naturally occurring earthquakes in the central US share the same characteristics, researchers have found. This information will help scientists predict and mitigate damage from future earthquakes. […]

  • Puzzling pockets of rock deep in Earth's mantle explained
    on August 2, 2017 at 12:29 pm

    The boundary between Earth's core and mantle is home to isolated pockets of rock which scientists have been unable to explain up until now. […]

  • Big data points humanity to new minerals, new deposits
    on August 1, 2017 at 11:33 pm

    Researchers have found a way to predict minerals missing from those known to science, where to find them, and where to look for new deposits of valuable minerals such as gold and copper. […]