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A rough diamond from Kankan, Guinea, that was analyzed in a new study led by a PhD student at the U of A. The imperfections inside the diamond are small inclusions of a mineral called ferropericlase, which is from the lower mantle. Credit: Anetta Banas

Uncovering new understanding of Earth’s carbon cycle

carbon cycle

Understanding Earth’s ‘deep-carbon cycle’

Eurypterid specimen image: Images of the eurypterid specimen fossil that led to Lamsdell’s discovery. Credit: Melanie Hopkins Photo

Coming up for air: Extinct sea scorpions could breathe out of...

Researchers collected and analyzed permafrost from four sites in the Yukon to develop a new technique to tease ancient DNA from soil, pulling the genomes of hundreds of extinct animals and thousands of plants from less than a gram of sediment. Credit: Tyler Murchie/ McMaster University

Thousands of species recorded in a speck of soil

A plume of ash and dust rises from Pavlof Volcano on the Alaskan Peninsula in 2013. Credit: NASA

Volcanic ash may have a bigger impact on the climate than...

Enhanced map of hematite (red) on Moon using a spheric projection (nearside only). Credit: Shuai Li

Has Earth’s oxygen rusted the Moon for billions of years?

Seismogram

Superheated rocks deep underground help explain earthquake patterns

Bezymianny is an active stratovolcano on the Kamchatka peninsula in eastern Russia. Credit: GFZ

Rebirth of a volcano : Evolution of Bezymianny volcano, Kamchatka after...

Location and geological map of Yukinoura district, Saikai City, Nagasaki Prefecture, Japan. Credit: Professor Tadao Nishiyama

Japan’s geologic history in question after discovery of metamorphic rock microdiamonds

A huge mammoth graveyard has been uncovered at the site of Mexico City's new airport

Mammoth graveyard unearthed at Mexico’s new airport

Map illustrating the location of Kapi (black star) relative to modern (dark green) and historical (light green) populations of lesser apes and the approximate distribution of early fossil apes in East Africa (blue triangles). Green triangles mark the location of previously discovered fossil gibbons. The new fossil is millions of years older than any previously known fossil gibbon and highlights their migration from Africa to Asia. Credit: Luci Betti-Nash.

New fossil ape discovered in India

Palaeoartist reconstruction of a 16 m adult Megalodon. Credit: Reconstruction by Oliver E. Demuth

True size of prehistoric mega-shark finally revealed

San Andreas Fault

Deep underground forces explain quakes on San Andreas Fault

Quartz is one of the most common crystals on Earth

Meteorite strikes may create unexpected form of silica

Sauropod Embryo. Credit: University of Manchester

Newly discovered rare dinosaur embryos show sauropods had rhino-like horns

Piece of the meteorite Sahara 97096 (about 10 cm long), an enstatite chondrite that contains about 0.5 weight % of water. If Earth formed entirely of this material, it would have received 23 times the total mass of water present in the Earth's oceans. Credit: L. Piani, Museum of Natural History in Paris

Meteorite study suggests Earth may have been wet since it formed

Basalt, the most-common rock on Earth’s surface, encases green crystals--a geologic "nesting doll" phenomenon called a xenolith. Basalts such as this one derive from a section of the mantle that has been depleted in incompatible trace elements, which is usually attributed to continental crust formation. In their work, Tucker and his collaborators propose another mechanism that would impart this signature. Credit: Carnegie Institution for Science

Probing the origin of the mantle’s chemically distinct ‘scars’

The largest and the smallest: dinosaurs reached an amazing range in size through the Mesozoic Era. Credit: Vitor Silva

How to weigh a dinosaur

Mukawaryu

Using math to examine the sex differences in dinosaurs

Surface displacement mapped using InSAR satellite imaging data. Along the fault, the ground was either raised (southeast) or collapsed (northwest). The star designates the epicentre. Credit: Jean-François RITZ et al

The Le Teil earthquake provides new insights on seismic risk in...

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