Taxonomy term

october 2017

Bare Earth Elements: Bone up on your spooky geo-vocabulary this Halloween

I simply couldn’t resist writing this post. While I’m hardly a fanatical Halloween guy, I am an impassioned lover of puns and word humor (typically, the more Dad-like, the better in my book). And so when it occurred to me I could crack open my big ol’ “Glossary of Geology” to scour it for some of the eerier sounding jargon within, it seemed a perfect way to acknowledge the day. Fear not … unlike with H.P. Lovecraft’s “Necronomicon,” there are no ancient or evil powers to be conjured from the netherworld by speaking these ghastly glossary entries. You might, however, summon an appreciation for the some of the fiendish creativity and ghoulish humor that’s gone into earth science’s vast lexicon.

31 Oct 2017

Northern Finns didn't starve during Little Ice Age

Today, Finland’s Northern Ostrobothnia region is one of the northernmost places in Europe that can support agriculture. But how this region fared during the Little Ice Age — a period of globally cooler temperatures that lasted roughly from A.D. 1300 to 1850 — is unknown. Scientists assume the climatic cooling would have adversely affected food supplies. Now, however, the discovery of a mysterious medieval cemetery in northern Finland dating to the middle of the Little Ice Age is offering clues that the inhabitants were well fed and well suited to the northern clime.

31 Oct 2017

Troubled waters: Lead lurking in U.S. water supplies

In 2014, Flint, Mich., started drawing its drinking water from the highly corrosive Flint River, which leached lead from old pipes, exposing the population to lead poisoning. Such aging infrastructure exists in towns across the nation, leaving many to wonder if what happened in Flint could happen to them. The answer in many cases is yes.
30 Oct 2017

T-A-P (Testing, Awareness, Prevention)

Not all water corrosivity issues are obvious. For this reason, Ryan Gordon, a hydrogeologist at the Maine Geological Survey, recommends that regular tests be conducted at least once every three years.

30 Oct 2017

How long will the lava flow? Predicting eruption durations with satellite monitoring

If you live near a lava-spewing volcano, it could be helpful to know just how long molten rock might flow during a fiery eruption. In a new study, scientists report that they can calculate how long lava-flowing eruptions might last based on satellite data.

27 Oct 2017

Geomedia: Books: Vivid anecdotes abound in "Eruption: The untold story of Mount St. Helens"

The 1980 eruption of Mount St. Helens was a pivotal event in the geologic careers of many volcanologists. Maybe it drove them to the geosciences, maybe it opened a door for more monitoring and research jobs in the United States, or maybe it was just an excellent example that the lower 48 states are volcanically active. However, as seminal as the 1980 eruption was, it happened almost 20 years before most of today’s college students were even born. To them, the eruption is another example from history, like Pelée or Vesuvius. They likely don’t have the same visceral reaction to it as those who remember it (even if, like me, you were still in preschool when the eruption occurred.)

26 Oct 2017

Another whiptail dinosaur added to sauropod family tree

With their massive size, long necks and whip-like tails, the sauropods are one of the most recognizable dinosaur groups. They grew as large as 100 metric tons, and it seems their huge frames were an effective adaptation: The sauropods were among the most diverse dinosaur groups, with more than 15 species known from North America alone. That list is now one species longer, with the identification of a new species based on a specimen found in Wyoming in 1995.

25 Oct 2017

Mangroves sprouted in Arctic during Eocene

Mangrove trees, which today thrive in tropical and subtropical climates in the low and midlatitudes, grew in the high Russian Arctic about 56 million years ago, scientists reported in Geology. It’s the northernmost occurrence of mangrove trees ever documented.

24 Oct 2017

Can distant earthquakes trigger submarine landslides?

Large earthquakes can nudge both nearby and distant faults closer to failure, sometimes setting off additional earthquakes halfway around the world. New evidence from the Cascadia Subduction Zone suggests that large seismic events can also trigger submarine landslides, called turbidity currents, perhaps as far as 13,500 kilometers away. If true, researchers say such long-distance connections could complicate interpretations of paleoseismic records from the Cascadia margin and elsewhere that rely on data from turbidites — the stratified remains of the underwater slides — to piece together when past local earthquakes occurred. But not everyone is convinced that long-distance landslide triggering is possible.

23 Oct 2017

Microbes care about energy efficiency

Microbes live in some of the most extreme environments on Earth, from the crushing depths of deep-sea trenches to scalding geothermal springs. Part of the reason microbes thrive in many different environments is their ability to use a variety of energy sources — including light, organic matter, and inorganic materials like hydrogen, sulfur, and iron — to power the metabolic reactions that allow them to grow and survive.

20 Oct 2017