In this overview map of Utah earthquakes, the dotted line marks the approximate location of the transition zone between the Basin and Range province and the Colorado Plateau and the blue rectangle indicates the study area. Historic seismic events in the study area (1900–1981, 4.5 ≤ M ≤ 6.6) from UUSS and USGS catalogs, and location of basins and ranges mentioned in the text. Horizontal purple dashed lines indicate approximate locations of Blue Ribbon (BRT) and Cove Fort (CVT) Transverse Zones (P. D. Rowley, 1998), thin black lines indicate Quaternary faults. MP: Markagunt Plateau Volcanic Field. The larger map (c) shows seismicity in the study area since 1981, ML ≥ 2.5 (UUSS). PHOTO CREDIT: University of Utah

What can central Utah’s earthquake ‘swarms’ reveal about the West’s seismicity?

Crawford Lake Credit: Sarah Roberts

Crawford Lake, Canada, chosen as the primary marker to identify the...

The fossil showing the entangled skeletons of the dinosaur (Psittacosaurus) and the mammal (Repenomamus). Scale bar equals 10 cm.

Unusual fossil shows rare evidence of a mammal attacking a dinosaur

Artwork by James Robins.

Flying reptiles had nurturing parental style

A new 145-million-year-old pterosaur. Credit: René Lauer

New fossil flying reptile ‘Elvis’ takes flight.

Left: Feathers from a baby bird that lived 99 million years ago, preserved in amber. Photo by Shundong Bi. Right: Illustration of what a newly hatched Enantiornithine bird may have looked like.

Fossils reveal how ancient birds molted their feathers

Two Vectipelta barretti - copyright Stuart Pond

Ankylosaur: New armoured dinosaur discovered

The fossil was found on a National Trust beach on the Isle of Wight

First side-necked turtle ever discovered in UK

Mantle plumes, shown in red, have been identified around the world. (Ingo Wölbern, via Wikimedia Commons)

Scientists unearth 20 million years of ‘hot spot’ magmatism under Cocos...

Steve May, a research associate at the Jackson School of Geosciences, holds a fossil from a plesiosaur, an extinct marine reptile. Credit: Jackson School of Geosciences/ The University of Texas at Austin.

Newly discovered Jurassic fossils in Texas

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