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Digimap Collections Help
A new set of FAQs about DigiMap licensing issues is available here. It’s pragmatic, clearly-written and scenario-based, so worth looking over if you ever have to field questions about what people can and can’t do with DigiMap data, including instances of derived data. Q. 34 deals with deposit in OA repositories.
geoscience  geography  geology  resources 
3 days ago by kfraser
Earth’s magnetic field is acting up and geologists don’t know why • Nature
Alexandra Witze:
<p>Something strange is going on at the top of the world. Earth’s north magnetic pole has been skittering away from Canada and towards Siberia, driven by liquid iron sloshing within the planet’s core. The magnetic pole is moving so quickly that it has forced the world’s geomagnetism experts into a rare move.

On 15 January, they are set to update the World Magnetic Model, which describes the planet’s magnetic field and underlies all modern navigation, from the systems that steer ships at sea to Google Maps on smartphones.

The most recent version of the model came out in 2015 and was supposed to last until 2020 — but the magnetic field is changing so rapidly that researchers have to fix the model now. “The error is increasing all the time,” says Arnaud Chulliat, a geomagnetist at the University of Colorado Boulder and the National Oceanic and Atmospheric Administration’s (NOAA’s) National Centers for Environmental Information.</p>

Isn't this sort of the premise of <a href="">the 2003 film The Core</a>, which critics noted proved that the centre of the earth is actually cheesy?

Oh, there's an update: "The release of the World Magnetic Model has been postponed to 30 January due to the ongoing US government shutdown."
russia  canada  geology  core  magnetic 
6 days ago by charlesarthur
North Pole moving from Canada to Siberia, quickly
pulse under South America, fast moving jet of iron under Canada
Science  Canada  Russia  Geology  Earth 
7 days ago by elijahz
Royal Peacock Opal Mine - Home
The Royal Peacock Mining Company in Northwest Nevada produces some of the world's finest fire opal.
opal  geology  mining 
9 days ago by jbkcc
Geology of the Galapagos Islands
I didn't get why this geologist was getting so excited but the basalt plain (second half of the photoset) is remarkable
2masto  geology  volcano  galapagos 
10 days ago by mikelynch
The sedimentary basin under Paris, France.

geology  sciart  from twitter_favs
10 days ago by gustavoluz
Zoe Todd, "On Time"
"What does it mean to abandon our renewal ceremonies, as humans? What does it mean to forget or stop those ceremonies altogether? What cosmic price did dinosaurs pay for forgetting to root themselves reciprocally with their worlds, to tend to the other lives and meanings that made their being possible? Or did they stop because some other force was bearing down upon them, rendering it impossible to renew? […] Are we, collectively, facing the same demise? If so, I take the point that we should heed what the dinosaurs have to teach us about the ending of orders of being, of worlds."
DeepTime  ZoeTodd  dinosaurs  geology  ClimateChange 
10 days ago by briansholis
Peter Brannen, "Why Earth's History Appears So Miraculous," The Atlantic
"In a strange way, truly gigantic craters don’t appear on the planet’s surface because we’re here to look for them. Just as the wounds of the returning planes could reflect only the merely survivable, so too for our entire planet’s history. It could be that we’ve been shielded from these existential threats by our very existence."
PeterBrannen  TheAtlantic  science  DeepTime  geology  life  astronomy 
11 days ago by briansholis
Peter Brannen, "Rambling Through Time," The New York Times
"This is the central insight of geology. The world is old beyond comprehension, and our story on it is short. The conceit of the Anthropocene, the supposed new epoch we’re living in, is that humanity can already make claims to its geological legacy. But if we’re to endure as a civilization, or even as a species, for anything more than what might amount to a thin layer of odd rock in some windswept canyon of the far future, some humility is in order about our, thus far, infinitesimal part in the history of the planet."
PeterBrannen  DeepTime  op-ed  NYT  science  geology 
11 days ago by briansholis
Peter Brannen, "Glimpses of a Mass Extinction in Modern-Day Western New York," The New Yorker
This upstate ocean poked out from under farmland, and crumbled from rock walls behind gas stations. In the Devonian period—hundreds of millions of years ago—it was filled with sea lilies, sea scorpions, armor-plated monster fish, forests of glass sponges, and patch reefs of strange corals. At night, these reefs were cast in shimmering chiaroscuro, inviting moonlit patrols of sharks and coelacanths. Where the water met land in eastern New York, dawn revealed fish hauling ashore on nervous day trips—slimy, gasping astronauts under a withering sun.
PeterBrannen  NewYorker  science  geology  DeepTime 
11 days ago by briansholis
Peter Brannen, "How Climate Change Helped the Dinosaurs Come to Power," The Atlantic
“The need to understand strange events like the Carnian Pluvial Episode has taken on new urgency."
PeterBrannen  TheAtlantic  science  geology  DeepTime  dinosaurs  ClimateChange 
11 days ago by briansholis

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