Tag

Seismic Imaging

All articles tagged with #seismic imaging

science24 days ago•6 min saved

Mantle Drip Carved the Green River Through Utah's Uinta Mountains

Geologists say a lithospheric drip—dense lower-crust material sinking into the mantle—pulled the land downward beneath Utah's Uinta Mountains, creating a temporary depression that let the Green River punch a 700-meter canyon through the range around 8 million years ago; as the drip broke off and the crust rebounded, the river remained entrenched, reshaping North America’s hydrology and the continental divide, with seismic imaging and river-network modeling supporting the scenario.

via The Daily Galaxy|

#geology #green-river #lithospheric-drip

science2 months ago•4 min saved

Scientists Discover Enigmatic 20-Kilometer Structure Beneath Bermuda Triangle

Scientists discovered a massive, 20-kilometer-thick, low-density rock formation beneath Bermuda, challenging traditional island formation theories by suggesting a deep mantle origin linked to ancient volcanic activity and deep carbon-rich mantle processes, which helps explain Bermuda's persistent elevation and unique geological history.

via Indian Defence Review|

#bermuda #deep-mantle #hidden-structure

science2 months ago•3 min saved

Scientists Uncover Hidden Massive Structure Beneath Rocky Mountains

Scientists have discovered a massive, previously unmapped underground structure beneath the Rocky Mountains using advanced seismic technology, challenging existing geological models and prompting further research into Earth's subsurface features.

via plusnews.org|

#geological-discovery #rocky-mountains #science

science3 months ago•3 min saved

New Research Challenges Dinosaur Extinction Theories and Reveals Hidden Oceanic Asteroid Crater

Scientists have confirmed the existence of the Nadir Crater, a 9 km wide impact crater beneath the Atlantic Ocean floor, formed 66 million years ago by an asteroid likely responsible for the extinction of the dinosaurs. Using advanced seismic imaging, they reconstructed the impact's aftermath, including tsunamis and liquefied sediments, and plan to drill cores to further study this well-preserved site, offering new insights into asteroid impacts and mass extinctions.

via The Daily Galaxy|

#asteroid-impact #dinosaur-extinction #nadir-crater

science3 months ago•4 min saved

Scientists Monitor Rising Eruption Risks at Oregon's Axial Volcano

Scientists have captured the most detailed 3D seismic images of Axial Volcano off Oregon, revealing complex internal processes and challenging previous theories about silica enrichment in its lava, which could improve understanding of underwater volcano eruptions.

via University of Nevada, Reno|

#axial-volcano #science #seismic-imaging

science4 months ago•3 min saved

Earth's Crust Rifting Deep Beneath the Pacific Ocean

New analysis of the Cascadia subduction zone reveals that one of the tectonic plates is tearing itself apart, indicating a gradual end to this subduction process, which is part of Earth's natural geological cycle. Using seismic imaging, scientists observed faults and fractures suggesting the plate is slowly breaking into smaller microplates, akin to a train derailing gradually, rather than a sudden catastrophe.

via ScienceAlert|

#earths-crust #geological-process #science

science4 months ago•6 min saved

Pacific Northwest Earth's Crust Fracturing

Scientists have captured detailed seismic images revealing that the Cascadia subduction zone off Vancouver Island is gradually breaking apart in a step-by-step process, creating microplates and shedding light on how subduction zones end, which has implications for earthquake hazards in the Pacific Northwest.

via SciTechDaily|

#cascadia-subduction-zone #earthquake-risk #microplates

science5 months ago•7 min saved

Scientists Confirm North Sea Impact Crater Origin

Scientists have confirmed that the Silverpit Crater in the North Sea was formed by a 40-million-year-old asteroid impact, using advanced seismic imaging and microscopic analysis of drill samples, resolving a long-standing debate about its origin.

via Space|

#asteroid-impact #earths-history #science

science5 months ago•5 min saved

Scientists Identify Hidden Cause of Dry Oil Wells

Researchers at Penn State used supercomputers to add a time dimension to seismic imaging, revealing hidden underground structures that can block oil access, potentially improving oil extraction efficiency and reducing waste.

via SciTechDaily|

#geology #oil-extraction #oil-wells

science6 months ago•3 min saved

Oceanic Plate Delamination and the Mystery of Portugal's Earthquakes

Recent seismic studies off Portugal's coast reveal that oceanic plate delamination, caused by serpentinization and decoupling of the mantle from the crust, may explain the region's unusual and destructive earthquakes, shedding light on a previously poorly understood tectonic process.

via Phys.org|

#oceanic-plate-delamination #portugal-earthquakes #science

science6 months ago•3 min saved

Massive Sections of North Sea Seafloor Discovered Upside Down, Shaking Earth Science

Scientists have discovered large sections of the North Sea seafloor are flipped upside down due to a rare geological process called stratigraphic inversion, involving dense sand layers sinking into lighter sediments, which could impact understanding of subsurface stability and fluid migration. The process, estimated to have occurred around 5.3 million years ago, was revealed through seismic imaging and may influence future geological and climate-related engineering projects.

via Indian Defence Review|

#geology #north-sea #science

science6 months ago•4 min saved

Geologists Warn North America Faces Imminent Sinking Crisis

A recent study reveals that North America's roots are slowly 'dripping' due to remnants of the ancient Farallon Plate, causing long-term geological changes beneath the continent, observed through advanced seismic imaging, though the process is very slow and unlikely to cause immediate surface changes.

via Indian Defence Review|

#cratonic-thinning #geology #north-america

science6 months ago•4 min saved

Hidden Faults Unveiled, Explaining Slow Earthquakes

Scientists have discovered that hidden fault structures called polygonal fault systems influence slow earthquakes in New Zealand's Hikurangi subduction zone, providing new insights into their behavior and potential impact on seismic activity and tsunami risk.

via Phys.org|

#fault-systems #hikurangi-subduction-zone #polygonal-fault-systems

science7 months ago•5 min saved

Scientists Find Rare Underwater Salt Deposits, Hinting at Earthquake Clues

Scientists discovered pockets of super-salty water beneath the Gofar transform fault, which may explain the fault's regular magnitude-6 earthquakes by acting as a lubricant and influencing stress cycles, offering new insights into earthquake mechanics and potential early warning systems.

via Earth.com|

#brine-fluids #earthquake-mystery #gofar-transform-fault

science1 year ago•3 min saved

"Unprecedented Survey Reveals Largest Volcano Eruption in 11,700 Years"

A recent survey of volcanic deposits off the coast of Japan has revealed that a volcanic eruption 7,300 years ago formed a large underwater caldera, making it the largest volcanic eruption in the past 11,700 years. The Kobe University research team used seismic imaging and sediment sampling to study the event, estimating the erupted volume to be between 133 and 183 cubic kilometers. The findings provide valuable insights into the dynamics of volcanic mega events and their impact on global climate and human history.

via Forbes|

#geological-research #japan #kikai-caldera