Friday, February 21, 2020
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Geology Page

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Welcome Stranger Nugget
Mineral Researches

Welcome Stranger Nugget : World’s Largest Gold Nugget found in Australia

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They may not look like much, but CI chondrites – small fragile meteorites as shown here – are thought to be our best compositional equivalents of the bulk material of our solar system.
Earth

Earth formed much faster than previously thought

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Asteroid impact
Asteroid

Asteroid impact enriches certain elements in seawater

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volcanic eruption in australia
Volcanoes

South American volcano showing early warning signs of ‘potential collapse’

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Fossil coral close-up Credit: Aaron O'Dea
Fossils

Fossils help identify a lone ‘bright spot’ in a similar state...

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lizard
Fossils

Vellbergia bartholomaei : Tiny prehistoric lizard sheds light on reptile evolution

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A group of Russian and German palaeontologists have described a previously unknown genus and species of prehistoric salamanders. The new amphibian is named Egoria malashichevi -- in honor of Yegor Malashichev a talented scientist and associate professor of the Department of Vertebrate Zoology at St Petersburg University, who passed away at the end of 2018. Credit: Pavel Skutschas
Fossils

Egoria malashichevi : Palaeontologists identify new Jurassic amphibian

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View of Takarkori shelter from the west. Credit: Savino di Lernia, 2020
Fossils

Fish in the Sahara? Yes, in the early Holocene

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Isobath map of the eastern Alborán basin with the volcanic edifice location. Orange lines show the main flood paths. (Image: García-Castellanos et al, 2020, Earth-Sciences Reviews)
Continents

New pieces of evidence found in the Alborán Sea possibly related...

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NHMUK PV R 9372, Palaeosauropus sp., (a) colour photograph of the original sandstone slab and tracks, (b) 3D digital render of the plaster cast of the sandstone slab and tracks and (c) black and white photograph of the original sandstone slab and tracks. In (b), left manus and pes prints are denoted a and b respectively, the right pes prints c and e, with print d being the right manus. The indented area left of print e is identified as damage to the specimen rather than a footprint impression.
Fossils

Oldest known record of amphibian tracks in the UK

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100-million-year-old Discoscapa apicula. The bee is carrying four beetle triungulins. Credit: George Poinar Jr., OSU College of Science.
Amber

Fossilized insect from 100 million years ago is oldest record of...

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The new dinosaur is called Tralkasaurus, which means "thunder reptile" in the indigenous Mapuche language common in Patagonia. In this file photo, a boy in Melbourne, Australia inspects the teeth of a theropod dinosaur
Dinosaur

Argentine researchers find distant Tyrannosaurus relative

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A photo of the stone men (Chimulchek Culture) in the steppe area of Altai Mountains. These figures are characteristic of the peoples who lived in the area around the time of occupation at Tongtian. These specific examples are located at the Chimulchek site (ca. 4000 years old) and not far from Tongtian Cave. Ceramic sherds from the cave suggest that the occupants in the cave shared similar cultural traits to other people in the region. Credit: Jianjun Yu
Fossils

5,200-year-old grains in the eastern Altai Mountains redate trans-Eurasian crop exchange

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This very complete specimen of the ichthyosaur Suevoleviathan is from the Early Jurassic of Germany. Many excellently preserved ichthyosaur fossils are known from this time and have been collected from the UK and Germany. Mary Anning from Lyme Regis is intimately associated with fossil collection and found the first recognized ichthyosaur fossils in 1810. Credit: Dr Ben Moon & Dr Tom Stubbs
Fossils

Boom and bust for ancient sea dragons

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A graphic reconstruction of the giant turtle Stupendemys geographicus: male (front) and female individual (left) swimming in freshwater. Credit: Artwork: Jaime Chirinos
Fossils

Extinct giant turtle had horned shell of up to three meters

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Calculated lattice thermal conductivity of MgSiO3 postperovskite (PPv) and bridgmanite (Brg) under the Earth’s lowermost mantle conditions. Credit: Ehime University
Mantle

Heat transport property at the lowermost part of the Earth’s mantle

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Horseshoe Bend, Arizona
Groundwater

As groundwater depletes, arid American West is moving east

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The image shows a thermokarst lake in Alaska. Thermokarst lakes form in the Arctic when permafrost thaws. Credit: NASA/JPL-Caltech
Arctic

NASA flights detect millions of Arctic methane hotspots

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A reconstruction of Laurasichersis relicta which lived in the northen hemisphere 66 millons years ago. Credit: José Antonio Peñas (SINC)
Fossils

One single primitive turtle resisted mass extinction in the northern hemisphere

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The fossil of Gunakadeit joseeae, which was found in Southeast Alaska. About two thirds of the tail had already eroded away when the fossil was discovered. Credit: University of Alaska Museum of the North
Dinosaur

New thalattosaur species discovered in Southeast Alaska

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