Friday, July 3, 2020
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Diverse structural-colored insects in mid-Cretaceous amber from northern Myanmar. Credit: NIGPAS
Amber

Amber fossils unlock true color of 99-million-year-old insects

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An individual of Ankylosaurus magniventris, a large armoured dinosaur species, witnesses the impact of an asteroid, falling on the Yucatán peninsula 66 million years ago. Not even its large size and thick armour sheltered its kind from the violence of this cosmic disaster. Credit: Fabio Manucci
Dinosaur

Asteroid impact, not volcanoes, made the Earth uninhabitable for dinosaurs

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Hauffiopteryx altera. Credit: McGill University
Fossils

New species of Ichthyosaur discovered in museum collection

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An Underwater Volcanic Eruption. Credit: NSF and NOAA
Volcanoes

How volcanoes explode in the deep sea

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Next to Prof. Oded Aharonson is the tri-axial Helmholtz Coil used to generate the magnetic field during the growing of the ice samples
Geomagnetic

The magnetic history of ice

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False color satellite image of the Taimali catchment area in southeastern Taiwan in August 2009 after typhoon Morakot. Red: vegetated surface, grey: barren surface (Image: LANDSAT-7 / NASA, JPL).
Earthquake

Typhoon changed earthquake patterns

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A new study shows that giant ore deposits are tightly distributed above where rigid rocks that comprise the nuclei of ancient continents begin to thin, far below the surface (white areas). Redder areas indicate the thinnest rocks beyond the boundary; bluer ones, the thickest. Circles, triangles and squares show known large sediment-hosted deposits of different metals. (Adapted from Hoggard et al., Nature Geoscience, 2020)
Earth

Geologists identify deep-earth structures that may signal hidden metal lodes

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Our planet has a layered structure of silicate mantle and metallic core. The liquid outer core is located 2900 km below the surface where the pressure and temperature are extremely high, >136 gigapascal (1.36 million atmospheres) and >4000 C. The sound speed and density profiles of the deep-interior of our planet is given by seismological observations.
Earth

Precise measurement of liquid iron density under extreme conditions

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Moon
Moon

Higher concentration of metal in Moon’s craters provides new insights to...

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Earth
Earth

Uncovering the two ‘faces’ of the Earth

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Amethyst-Geode in the parent rock
Mineral Researches

How do the Geodes get Colorful?

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zultanite gemstones, rough and crystal form lighting
Mineral Researches

Zultanite : What is Zultanite Mineral? Where to find Zultanite?

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An egg of Himeoolithus murakamii (left), outlined egg with intact eggshell remains (black area) (middle), and reconstruction of Himeoolithus murakamii and their probable parent dinosaur (right).
Dinosaur

Tiny Japanese dinosaur eggs help unscramble Cretaceous ecosystem

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In a new report, paleontologists Lauren Sallan and Jack Stack re-examine the “enigmatic and strange” prehistoric fish Tanyrhinichthys mcallisteri.
Fossils

300-million-year-old fish resembles a sturgeon but took a different evolutionary path

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Pictured left is an exceptionally preserved male pollen cone of Araucaria huncoensis showing characteristic cylindrical shape and many long, pointed bracts at the base. Pictured right is a leafy branch fossil of Araucaria huncoensis, showing rare preservation of a branching point connecting two leafy branch segments and a connected growth point on the right segment. The branches are usually shed from the tree as individual segments.
Fossils

New Argentine fossils uncover history of celebrated conifer group

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Earthquake

How water in the deep Earth triggers earthquakes and tsunamis

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Illustration of the natural fluid injection process that triggered the Cahuilla swarm.
Earthquake

Natural fluid injections triggered Cahuilla earthquake swarm

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Alaska’s Umnak Island in the Aleutians showing the huge, 10-km wide caldera (upper right) largely created by the 43 BCE Okmok II eruption at the dawn of the Roman Empire. Landsat-8 Operational Land Imager image from May 3, 2014
Volcanoes

Eruption of Alaska’s Okmok volcano linked to period of extreme cold...

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Scientists examined hundreds of samples taken along the global ridges that contain recycled ancient oceanic crust in variable amounts. "Depleted" segments of the ridge received lower than "normal" amounts of recycled crust, while "enriched" segments contain a larger proportion of recycled crust.
Earth

Geochemists solve mystery of Earth’s vanishing crust

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Mud Volcanoes
Earth

The geological record of mud deposits

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