#experimental-petrology
#experimental-petrology
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#deep-time #geology #plate-tectonics #early-earth-geology #urban-geology #building-stone #fossils #paleomagnetism
#plate-tectonics
OMG science
fromwww.scientificamerican.com
2 weeks agoWhen did plate tectonics on Earth begin? New research finds some of the earliest clues
Magnetic evidence from ancient Western Australian crust reveals plate tectonics began at least 3.48 billion years ago, half a billion years earlier than previously documented.
OMG science
fromwww.theguardian.com
2 weeks agoA molten, mushy state': scientists may have found a new type of liquid planet
Astronomers discovered L98-59d, a molten lava planet 35 light years away that represents an entirely new category of liquid planet with surface temperatures of 1,900°C and a hydrogen sulfide atmosphere.
fromTheregister
1 month agoMoon's mighty magnetic field was a 5,000-year titanium blip
Our new study suggests that the Apollo samples are biased to extremely rare events that lasted a few thousand years - but up to now, these have been interpreted as representing 0.5 billion years of lunar history. It now seems that a sampling bias prevented us from realizing how short and rare these strong magnetism events were.
Science
OMG science
fromNature
1 month agoEarth's oldest crystals suggest an early start for plate tectonics
Ancient Australian zircon crystals reveal early Earth had more oxygen and water than expected, with tectonic plate movement occurring at least 3.3 billion years ago, suggesting conditions more favorable for life than previously believed.
fromwww.theguardian.com
1 month agoHow ancient Scottish rocks throw snowball Earth' theory up in the air
Recent examination of some ancient rocks from the west coast of Scotland have now overturned that thinking, suggesting there were periods during snowball Earth when the climate woke up. Close-up views of thin, repeating rock layers known as varves, each thought to represent a single year of sedimentation during the snowball Earth period.
Science
Arts
fromdesignboom | architecture & design magazine
1 month agocolorful crystals show how they naturally grow within a garden of glass petri dishes
Crystal Garden: Seasons displays colorful crystals growing in glass Petri dishes, forming seasonally themed mineral landscapes through controlled setup and natural crystallization.
fromConde Nast Traveler
2 months agoChasing Lava as the Earth Shifts
Land is one of those things that can disappear even as you see it. It falls away beneath you, becoming merely the ground under your feet, because you're thinking about where you're going, or a place slowly blurring out of focus from the airplane window. Land is a primal word, primordial even, like lava. And it is a loaded word if, say, you're Indigenous or descend from a people whose land was taken from them.
Environment
fromWIRED
1 month agoTwo Titanic Structures Hidden Deep Within the Earth Have Altered the Magnetic Field for Millions of Years
A team of geologists has found for the first time evidence that two ancient, continent-sized, ultrahot structures hidden beneath the Earth have shaped the planet's magnetic field for the past 265 million years. These two masses, known as large low-shear-velocity provinces (LLSVPs), are part of the catalog of the planet's most enormous and enigmatic objects. Current estimates calculate that each one is comparable in size to the African continent, although they remain buried at a depth of 2,900 kilometers.
Science
fromHigh Country News
2 months agoHow geology not only shapes the world, it shapes us - High Country News
My father was a petroleum geologist. A lot of my childhood, he was gone, away on oil rigs in the Powder River Basin and remote parts of Wyoming, living in man camps long before cellphones. We had to wait days to talk to him. When he went into the nearest town to shower, he'd find a payphone and call us. I was always breathless with news.
Science
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