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A magnitude 8.2 earthquake was “hidden” within a magnitude 7.5 earthquake in 2021, sending a mysterious tsunami around the world, according to a new study in Geophysical Research Letters. Credit: Zhe Jia and AGU

Hidden magnitude-8.2 earthquake source of mysterious 2021 global tsunami

A series of earthquakes and aftershocks shook the Ridgecrest area in Southern California in 2019. Distributed acoustic sensing (DAS) using fiber-optic cables enables high-resolution subsurface imaging, which can explain the observed site amplification of earthquake shaking. Credit: Yang et al., 2022

Fiber-optic cables can produce high-resolution underground maps

The edges of Earth’s tectonic plates, centered over the Pacific Ocean. Colors indicate whether plates are scraping past (yellow), diving under (green), or pulling away (red) from one another. Study site near New Zealand marks the location of a newly forming subduction zone. Credit: Brandon Shuck/University of Texas Institute for Geophysics

How does a major subduction zone get started? It may begin...

Images of different fossil remains of Abditosaurus kuehnei at the Orcau-1 site (a), the excavation process (b and c) and the neck after fossil preparation (d).

Large new titanosaurian dinosaur from the Pyrenees

A view of the graben, which emerged near the Holuhraun lava field in Iceland. The western boundary of the graben is seen in the foreground, in the center-right portion of the image, where the land begins to dip down. Credit: Stephan Kolzenburg

As tectonic plates pull apart, what drives the formation of rifts?

True body shape of the ancient Megalodon remains a mystery. (Phillip Sternes/UCR/DePaul)

New research bites holes into theories about Megalodons

Traces of paleotsunami at the lowland of the Ube River, Noda Village. The Sanriku Coast has been hit by tsunamis throughout its history, leaving behind tsunami deposits. Credit: Tohoku University

New analysis of tsunami deposits paints a clearer picture of Sanriku’s...

Erratus Sperare - the new missing link fossil

New fossil reveals origin of arthropod breathing system

Clay soil sticks together. Photo by Lynn Ketchum.

Like diamonds, clay soils are forever

Rapid erosion of supermountains released large amounts of nutrients, which were eventually carried into the oceans. Photo: Peter Campbell

Supermountains controlled the evolution of life on Earth

Fault zone with broken rock inside stippled lines and faulting directions of each rock segment outlined by half arrows. Photo credit: Henrik Drake. Illustration: Mikael Tillberg.

How fault lines in a kitchen sink are changing what we...

Earth

Scientists identify geological ‘Goldilocks zone’ for the formation of metal ore...

A 250-million-year-old fossil of a marine snail shell in pristine condition. The shell was one of the thousands examined in the study. Scale bar = 100 µm. Credit: William Foster et al.

Fossil snail shells offer new tool for analyzing ancient ocean chemistry

Taken by the Himawari 8 satellite, this red-filter visible image of a volcanic eruption in Tonga was taken on 15 January 2022 at 04:50 (UTC) 5:50 PM (Tonga Local Time). This volcanic eruption produced a 3.9 foot (1.2 meter) tsunami which struck Nukuʻalofa, the capital of Tonga. The volcano also triggered tsunamis across the Pacific Ocean affecting countries and territories like Fiji, Samoa, Wallis and Futuna, Vanuatu, New Zealand, Australia, Japan, Russia, the United States, Canada, Mexico, Chile and Ecuador, and explosions and the shockwave from the eruption could be heard as far as Alaska and Canada. Also visible in this image is the remnants of Tropical Cyclone Cody to the southwest. Credit: Japan Meteorological Agency/NASA SPoRT. CC BY 4.0

Tonga eruption is one for the record books

Researchers used thermochronometric data from four North American locations to determine the cause of the “Great Unconformity”—a massive loss of rock about 700 million years ago. Credit: Kalin McDannell

New research strengthens link between glaciers and Earth’s ‘Great Unconformity’

Paleontologist Dean Lomax with the fossilized ichthyosaur. (Matthew Power Photography/Anglian Water)

The World’s Largest Sea Dragon Unearthed in The UK

Natural History Museum of Los Angeles County (NHM) Dinosaur Institute volunteer Viji Shook lying next to the skull of Cymbospondylus youngorum for scale, during the preparation of the specimen. Photo by Martin Sander, courtesy of the Natural History Museum of Los Angeles County (NHM).

Earth’s first known giant creature

Can diamonds originate methane?

Igánâq, Greenland: view to the southwest from the Igánâq summit (~540m) towards Tunulliarfik and the snowy peaks of Ilímaussaq. Credit: University of St Andrews

New tools to unearth rare metals

Vectiraptor greeni, a new fierce predatory dinosaur from the Isle of Wight. Image credit: Megan Jacobs

An ancient relative of Velociraptor is unearthed in Great Britain

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