Wednesday, August 4, 2021
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Geology Page

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A map of the World Ocean Floor. Credit: Library of Congress, Geography and Map Division
Earth

Geologists take Earth’s inner temperature using erupted sea glass

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A wide-angle aerial view looks southeast over Kīlauea’s summit caldera on July 22, 2021. Large cliffs formed during the 2018 collapses are visible on the left side of the photo. A recently active lava lake is visible in the lower right. (Image credit: M. Patrick, USGS)
Volcanoes

Giant friction experiment at Kilauea volcano

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The cliffs of the volcanic island of Santorini showing the layers of deposits from past volcanic eruptions. Credit: co-author Dr. Ralf Gertisser (Keele University).
plate tectonics

Sea levels influence eruptions on volcanic island

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A view of Kīlauea’s summit lava lake. The lava lake is contained within a crater, which is set within the larger Halema‘uma‘u Crater. New research aims to understand the activity that led to the eruption in 2018 in Kīlauea’s lower East Rift Zone. Credit: USGS
Volcanoes

Volcanic tremor and deformation at Kīlauea

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Skull fossils of amphibian. Credit: Field Museum of Natural History, Chicago
Fossils

Skull of 340 million year old animal digitally recreated, revealing secrets...

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Two fossils of Brooksella alternata.
Fossils

Icy waters of ‘Snowball Earth’ may have spurred early organisms to...

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Tree stomp in lignite deposits. Credit: Vittoria Lauretano
climate

Decline in CO2 cooled Earth’s climate more than 30 million years...

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Fossilised Squalicorax tooth Nr. #07815 from the Jerusalem site. Credit: Omri Lernau
Fossils

The City of David and the sharks’ teeth mystery

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Chuandianella ovata, an extinct shrimp-like crustacean.
Fossils

Paleonursery offers rare, detailed glimpse at life 518 million years ago

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Nierra Negra Volcano on the Galapagos Islands
Volcanoes

New model for shield volcano eruption

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A "Plume" in the Earth's mantle, i.e. a surge of hot material, caused the Indian Plate to spin off. (Graphic: Alisha Steinberger)
plate tectonics

Supervolcano fed from Earth’s mantle caused crustal plates to rotate

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Ordovician black shales of the Mount Hare Formation, Road River Group (approximately 465 million years old) rise above conglomerates of the Aberdeen Member. The dangerous rapids of Aberdeen Canyon (Nan Zhak Nadhàdlaii), created by the Peel River cutting through the resistant conglomerates, appear at bottom left. (Image credit: Erik Sperling)
Paleontology

Longest known continuous record of the Paleozoic discovered in Yukon wilderness

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Upper molar of Altaynycteris aurora. Credit: Li Qiang
Fossils

Researchers detail the most ancient bat fossil ever discovered in Asia

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Boriana Kalderon-Asael conducts field work at a Middle-Upper Ordovician outcrop near Reedsville, Penn. Credit: Ashleigh Hood
climate

Earth’s climate life story, 3 billion years in the making

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The Alum Shale, here an example of a coastal deposit, consists of quartz and potassium Feldspar clasts as well as conspicuous Pyrite crystals (here: white) embedded in a clayey matrix. Scanning electron micrograph (scale: lower image edge length corresponds to approx. 40 μm). Credit: Schulz, GFZ
Earth

A rock with many perspectives

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Gold in pyrite
Mineral Researches

‘Fool’s gold’ not so foolish after all

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The asteroid belt between Jupiter and Mars is the main source of extraterrestrial material that lands on Earth. (Illustration: ESA/ATG Medialab)
Meteorites

Earth’s meteorite impacts over past 500 million years tracked

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Uskiella spargen a small plant whose axes divide several times before bearing oval sporangia. Credit : Cyrille Prestianni
Fossils

Discovery of the oldest plant fossils on the African continent!

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The early Earth was hotter than it is today and this affected the strength of the crust and mantle.
Earth

The Earth has a pulse — a 27.5-million-year cycle of geological...

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Open cut hard rock mining, Kalgoorlie, Western Australia.
Mining

Mining precious rare-earth elements from coal fly ash with a reusable...

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