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Yearly Archives: 2019

Ore Minerals

Ore Minerals : What are Ore Minerals?

Opalized Ammonite

Research offers insight into how oldest fossils formed

Fossilised 20 centimetre long hand claw of theropod discovered at Eric the West site on Victoria’s Otway Coast. Credit: Stephen Poropat/Museums Victoria

Huge-clawed predatory dinosaur discovery in Victoria

Images of the numerical solution at the moment when a supercontinent (left, in purplish grey) begins to break up. In the image on the left, the modelled fictional planet looks much like the Earth: its surface and mantle move spontaneously, at speeds close to those observed on Earth. The distribution of the plates (some of which are large, while many are small) is also similar, as is the topography: red hues represent shallow regions of the ocean (ridges), while blue indicates the deep seafloor. The deepest blue areas correspond to subduction trenches (where a plate is sinking into the mantle). The continents are shown in translucent white (and therefore appear purplish grey).The image on the right shows warm currents (plumes) rising from the bottom of the mantle. Credit: Nicolas Coltice

What makes the Earth’s surface move?

As part of MISTI-India, Megan Guenther, a junior in EAPS, records field notes about the landscape of the Kohistan-Ladakh region of the Himalayas in northern India. Credit: Craig Martin

Collision course: A geological mystery in the Himalayas

Woolly mammoth illustration Mauricio Antón © 2008 Public Library of Science

Archaeologist finds evidence of extinction theory

Brittany Erickson, an assistant professor in the Department of Computer and Information Science who studies geophysics and is a colleague of UO’s Leif Karlstrom, peers into the Halema'uma'u lava lake on Hawai’i’s Kiīlauea volcano. Credit: University of Oregon

Volcanologist jams to the beat of the Earth’s drummer

Photograph of the traces analyzed: : Megalosauripus transjuranicus (A) y Jurabrontes transjuranicus (B). Credit: Matteo Belvedere et al.

Jurassic dinosaurs trotted between Africa and Europe

Garnet. Credit: Cherokee Ruby Mine

Top Spots For Gem Hunting In California

Vredefort Dome, Free State, South Africa. Credit: NASA

Vredefort crater : The Largest Verified Impact Crater on Earth

Maps of the Siljan impact structure and study locations. a Map of Sweden with the Siljan area indicated. b Geological map of the Siljan impact structure with locations of the cored boreholes and the quarry sampled for mineral coatings indicated, along with the sedimentary units in the crater depression, towns, lakes (white) and roads (black lines). Gas compositions exist from boreholes VM2 and VM5 (located adjacent to VM2). Credit: Nature Communications, 2019

Europe’s largest meteorite crater home to deep ancient life

Rare Earth Elements

How rare earth element (REE)-rich deposits formed in central Sweden

volcanoes

Magma crystallization makes volcanoes more explosive

Ampyx priscus in linear formation (Moroccan Lower Ordovician Fezouata Shale). Credit: Jean Vannier, Laboratoire de Geologie de Lyon: Terre, Planètes, Environnement (CNRS / ENS de Lyon / Université Claude Bernard Lyon 1)

Fossils show lining up is primal urge

Gigantic dinosaurs like the sauropod Diplodocus, which weighed over 15 tons and was longer than an 18-wheeler truck, would have had problems with potentially lethal overheating. Hot blood from the body core would have been pumped to the head, damaging the delicate brain. New research shows that in sauropods, evaporation of moisture in the nose and mouth would have cooled extensive networks of venous blood destined for the brain. Other large dinosaurs evolved different brain-cooling mechanisms, but all involving evaporative cooling of blood in different regions of the head. Credit: Life restoration by Michael Skrepnick. Courtesy of WitmerLab at Ohio University.

Huge dinosaurs evolved different cooling systems to combat heat stroke

A small, feathered theropod dinosaur, Saurornitholestes langstoni was long thought to be so closely related to Velociraptor mongoliensis that some researchers called it Velociraptor langstoni—until now. Credit: Jan Sovak.

Paleontologists discover complete Saurornitholestes langstoni specimen

The Sosnogorsk lagoon just before a deadly storm. Credit: Mikhail Shekhanov for the Ukhta Local Museum

The earliest well-preserved tetrapod may never have left the water

A new study led by Yale University confirms a long-held theory about the last great mass extinction event in history and how it affected Earth's oceans. The findings may also answer questions about how marine life eventually recovered. Credit: Michael Henehan & Pincelli Hull

Mystery solved: Ocean acidity in the last mass extinction

In this handout image provided by NASA/JPL-Caltech/MSSS, a color image from NASA’s Curiosity rover’s Mast Camera shows part of the wall of Gale Crater, the location on Mars where the rover landed August 5, 2012 on Mars. Credit: NASA via Getty Images

Mars once had salt lakes similar to those on Earth

Giant gold nugget found in California

Prospecting for gold just got a lot easier

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