Taxonomy term

geology

Travels in Geology: Mid-ocean volcanic excursion: The calderas and caldeiras of the Azores

The Azores, a volcanic island chain spanning more than 600 kilometers, may be diminutive and difficult to find on the map, but the islands offer oversize opportunities for sightseeing and adventure that are sure to appeal to almost any traveler, particularly those with an eye for natural and geologic scenery.

18 Feb 2019

Humans accidentally created new rivers in Europe

Meandering rivers that flow through and transport sediment to deltas often split off from their main courses and flow in different directions. This process, called avulsion, happens naturally when a river overflows its banks and the floodwaters carve out a new course for the river to follow. But humans can also trigger avulsions by changing the shape of the landscape, and in a new study, scientists report that people have been doing this for a very long time.

15 Feb 2019

Geologic Column: Is this land really your land?

In 1940, Woody Guthrie wrote the iconic folk song, “This Land Is Your Land,” as a commentary on inequality. Where do we stand today, and who really owns the land in America?

13 Feb 2019

Archaeologists hit pay dirt in medieval latrines

Archaeologists digging in Lübeck, Germany, unearthed an unusual source of information about past dietary habits in the city: parasite eggs recovered from 700-year-old latrines.

12 Feb 2019

Sounding Out Earth's Hum

Scientists are working to isolate and identify the various sources and mechanisms, beyond earthquakes, that vibrate the solid earth. The search has led them offshore to investigate how wind and waves and the seafloor interact to produce a symphony of sound that humans can’t hear.

11 Feb 2019

Hot but not bothered: Warm soils favor microbes with small genomes

Centralia, Pa., sits above rich subterranean coal seams, which made the town a mining center for about a century. In 1962, the seams were accidentally ignited by burning garbage, turning the coal from a commodity into a liability. Driven away by fire-associated hazards and particulate air pollution, all but a few human residents have long since abandoned the town. However, a new study reveals that the same isn’t true for all forms of life: A diverse population of microbial life resides in Centralia’s hot soils. These heat-tolerant microbes are offering scientists novel insights into the composition and character of soil microbial communities and resilience in response to dramatic ecosystem change.

08 Feb 2019

Mediterranean heritage sites threatened by rising seas

The Mediterranean region has been a cultural center for centuries, giving rise to numerous locales designated as UNESCO World Heritage sites. A new study looking at the effects of rising sea levels on treasures like the Venetian Lagoon, the Old City of Dubrovnik and the ruins of Carthage indicates that most UNESCO sites on the Mediterranean Sea are at risk of storm surge and coastal erosion as well as inundation in the coming decades.

07 Feb 2019

Mighty Mekong cut by monsoon, not tectonics

The rivers draining the Tibetan Plateau are some of the largest, longest and most deeply incised waterways in the world. For decades, most geologists assumed that these river canyons were cut as the plateau was uplifted following the initial collision of the Indian subcontinent with Asia. However, recent studies have found that the plateau was already elevated by 40 million years ago — roughly 20 million years before the deep canyons formed. 

06 Feb 2019

Redefining Dinosaurs: Paleontologists are Shaking the Dinosaur Family Tree to its Roots

A radical reconfiguration of the classification of dinosaurs challenges an orthodoxy built on roughly a century and a half of research. But many paleontologists are not ready to accept such a big shift in our understanding of dinosaur evolutionary history.

04 Feb 2019

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