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Categories: Geoscience: Earthquakes, Paleontology: Dinosaurs

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Geoscience: Earthquakes
Published

Geological carbon sequestration in mantle rocks prevents large earthquakes in parts of the San Andreas Fault      (via sciencedaily.com) 

Researchers say ubiquitous evidence for ongoing geological carbon sequestration in mantle rocks in the creeping sections of the San Andreas Fault is one underlying cause of aseismic creep along a roughly 150 kilometer-long SAF segment between San Juan Bautista and Parkfield, California, and along several other fault segments.

Geoscience: Earthquakes
Published

Assessing the effect of hydraulic fracturing on microearthquakes      (via sciencedaily.com) 

A new article assesses the impact of hydraulic fracturing on seismic hazards like micro-earthquakes, an important issue for the safety of workers and the continuation of mining operations.

Paleontology: Dinosaurs
Published

All the better to better eat you with -- dinosaurs evolved different eye socket shapes to allow stronger bites      (via sciencedaily.com) 

Large dinosaur predators, such as Tyrannosaurus rex, evolved different shapes of eye sockets to better deal with high bite forces, new research has shown.

Paleontology: Dinosaurs
Published

Prehistoric podiatry: How dinos carried their enormous weight      (via sciencedaily.com) 

Scientists have cracked an enduring mystery, discovering how sauropod dinosaurs -- like Brontosaurus and Diplodocus -- supported their gigantic bodies on land.

Paleontology: Dinosaurs
Published

The speed at which spinosaurid dinosaur teeth were replaced accounts for their overabundance in Cretaceous sites      (via sciencedaily.com) 

Spinosaurid dinosaurs were able to develop up to three generations of teeth at the same time, a high replacement rate that explains why so many teeth of this type have been found in Cretaceous sites.

Geoscience: Earthquakes
Published

Nanoscale observations simplify how scientists describe earthquake movement      (via sciencedaily.com) 

Using single calcite crystals with varying surface roughness allows engineers to simplify the complex physics that describes fault movement. Researchers now show how this simplification may lead to better earthquake prediction.

Paleontology: Dinosaurs
Published

Plesiosaur fossils found in the Sahara suggest they weren't just marine animals      (via sciencedaily.com) 

Fossils of small plesiosaurs, long-necked marine reptiles from the age of dinosaurs, have been found in a 100-million year old river system that is now Morocco's Sahara Desert. This discovery suggests some species of plesiosaur, traditionally thought to be sea creatures, may have lived in freshwater.

Paleontology: Dinosaurs
Published

Study refutes claim that T. rex was three separate species      (via sciencedaily.com) 

A new study refutes a provocative claim made earlier this year that fossils classified as the dinosaur Tyrannosaurus rex represent three separate species. The rebuttal finds that the earlier proposal lacks sufficient evidence to split up the iconic species.

Geoscience: Earthquakes
Published

Global supply chains remain resilient in the wake of natural disasters      (via sciencedaily.com) 

While many U.S. policy makers are calling for reshoring and nearshoring to combat trade disruptions caused by COVID-19, new research suggests retrenchment of global supply chains is unlikely to happen in the post-pandemic context.

Geoscience: Earthquakes
Published

Novel model of fluid distribution in the Cascadia Subduction Zone aids understanding of seismic activity      (via sciencedaily.com) 

A novel three-dimensional model of the fluid stored deep in Earth's crust along the Cascadia Subduction Zone provides new insight into how the accumulation and release of those fluids may influence seismic activity in the region.

Geoscience: Earthquakes Geoscience: Volcanoes
Published

Shockwave caused by Tonga underwater eruption may help scientists predict future tsunami      (via sciencedaily.com) 

Using data from the eruption of the underwater volcano near Tonga in 2022, researchers used disturbances in Earth's upper atmosphere to track the airwaves that cause tsunami. Their findings may lead to speedier predictions of these giant waves.

Geoscience: Earthquakes
Published

Haiti's 1860 Jour de Pâques earthquakes may have released strain in key fault zone      (via sciencedaily.com) 

Using details from historical newspaper accounts and letters, seismologists have learned more about Haiti's 1860 Jour de Pâques (Easter Sunday) earthquake sequence, and how it might have impacted the country's most recent devastating earthquakes.

Paleontology: Dinosaurs
Published

A new giant dinosaur gives insight into why many prehistoric meat-eaters had such tiny arms      (via sciencedaily.com) 

An international team has discovered a new big, meat-eating dinosaur, dubbed Meraxes gigas, that provides clues about the evolution and anatomy of predatory dinosaurs such as the Carcharodontosaurus and Tyrannosaurus rex. Meraxes measured around 36 feet from snout to tail tip and weighed approximately 9,000 pounds.

Paleontology: Dinosaurs
Published

Dinosaurs took over amid ice, not warmth, says a new study of ancient mass extinction      (via sciencedaily.com) 

There is new evidence that ancient high latitudes, to which early dinosaurs were largely relegated, regularly froze over, and that the creatures adapted -- an apparent key to their later dominance.

Geoscience: Earthquakes
Published

'Quake brain' effects suffered by resilient Cantabrians fade over time      (via sciencedaily.com) 

New research suggests the brain function of otherwise-healthy individuals exposed to event trauma has the ability to 'bounce back' over time once the threat resolves. Researchers conducted a follow-up study on a group of Cantabrians, who had been exposed to trauma during the region's earthquakes over a decade ago.

Geoscience: Earthquakes
Published

'Hindcasting' helps identify causes of induced earthquakes in Delaware Basin, West Texas      (via sciencedaily.com) 

Using a method that works backward from a set of observed earthquakes to test seismic models that fit those observations, researchers working in the Delaware Basin were able to determine whether earthquakes in the region since 2017 were caused by oil and gas operations.

Geoscience: Earthquakes
Published

The Earth moves far under our feet: A new study shows the inner core oscillates      (via sciencedaily.com) 

Scientists have found evidence that the Earth's inner core oscillates, contradicting previously accepted models that posited it consistently rotates at a faster rate than the planet's surface.

Paleontology: Dinosaurs
Published

Europe's largest land predator unearthed on the Isle of Wight      (via sciencedaily.com) 

Palaeontologists have identified the remains of one of Europe's largest ever land-based hunters: a dinosaur that measured over 10m long and lived around 125 million years ago.

Paleontology: Dinosaurs
Published

Bizarre meat-eating dinosaur joins 'Rogues' Gallery' of giant predators from classic fossil site in Egypt's Sahara Desert      (via sciencedaily.com) 

The fossil of a still-unnamed species provides the first known record of the abelisaurid group of theropods from a middle Cretaceous-aged (approximately 98 million years old) rock unit known as the Bahariya Formation, which is exposed in the Bahariya Oasis of the Western Desert of Egypt.

Geoscience: Earthquakes
Published

Updating our understanding of Earth's architecture      (via sciencedaily.com) 

New models that show how the continents were assembled are providing fresh insights into the history of the Earth and will help provide a better understanding of natural hazards like earthquakes and volcanoes.