Eggplant.place

1y

The mysterious "star dune" in the Sahara desert is on the move.

@popsci reports: "Morocco's Lala Lallia — one of the world's oldest known 'star dunes' — is slowly inching west."

#Sahara #Desert #Morocco #Geology #Science

1y

Black velvet #malachite display piece looking phenomenal in this light. Don't you just want to reach out and pet it like a precious little kitten? Very good looking piece.

#geology #minerals #chemistry #crystals #green

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1y

British Geologist And Astronomer John Michell died #OTD in 1793.

He is the first person known to have proposed the existence of stellar bodies comparable to black holes, and the first to have suggested that earthquakes travelled in (seismic) waves. He invented an apparatus to measure the mass of the Earth, and explained how to manufacture an artificial magnet.

#books #physics #geology #astronomy

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1y

Could magma be moving deep below the surface on the border of Germany and the Czech Republic? And if so, what is the significance? Recently installed seismometers in the Vogtland region captured a swarm of earthquakes, suggesting a “complex seismic situation” could be developing. Live Science explains.
https://flip.it/xMLNt9
#Science #Earthquakes #Germany #CzechRepublic #Geology

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1y

Scientists have mapped one of the most hazardous spots on the globe in unprecedented detail: a 600-mile geologic boundary just off the #PacificNorthwest coast. 
Along this fraught stretch, called the #CascadiaSubductionZone, 2 pieces of the #Earth’s crust slide against each other, building up stresses capable of unleashing a catastrophic 9.0-magnitude #earthquake & generating a #tsunami, w/waves as high as 40 feet.

#science #geology #climate
https://www.washingtonpost.com/science/2024/06/07/earthquake-tsunami-cascadia/

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1y

American geologist and educator Florence Bascom was born #OTD in 1862.

She was the first woman to earn a Ph.D. in geology from Johns Hopkins University in 1893. Bascom's work was instrumental in mapping the geology of the mid-Atlantic Piedmont region. She was the first woman hired by the U.S. Geological Survey (USGS) and became one of the foremost experts on the crystalline rocks of the Piedmont region.

https://en.wikipedia.org/wiki/Florence_Bascom

#science #geology #womeninscience

Geologist Florence Bascom (1862-1945) was the first woman to earn a Ph.D. from Johns Hopkins University (1893) and, in 1894, the first woman elected to the Geological Society of America. She was Professor of Geology at Bryn Mawr College from 1895-1928, and active as a researcher with U.S. Geological Survey from 1896-1936. An authority on the crystalline rocks of the Piedmont, Bascom helped to train the majority of female geologists in the United States during the early 20th century.

A woman in a stylish dress poses for a black and white photo.

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327d

5.5 million years ago the Mediterranean dried out, with sobering lessons for humanity today – new research

What would happen if humans dried out the Mediterranean sea, turning it into a giant salt lake? Would its wildlife survive, and if so, how long would it take to recover?

By Daniel García-Castellanos and Konstantina Agiadi via @ConversationUS

https://theconversation.com/5-5-million-years-ago-the-mediterranean-dried-out-with-sobering-lessons-for-humanity-today-new-research-237428

#science #geology #biodiversity

Long-snouted seahorse (Hippocampus guttulatus). Vojce/Shutterstock

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316d

The World’s Oldest Glaciers Are Buried Under South African Gold

2.9-billion-year-old evidence could be proof of a lost ice age—the first “Snowball Earth.”

by Gemma Tarlach via @atlasobscura

https://www.atlasobscura.com/articles/oldest-glaciers-lost-ice-age

#science #geology #glaciers #climatechange

The world’s oldest glaciers still in existence can be found in the Dry Valleys of Antarctica, where some of the ice is a million or more years old. U.S. Department of State/Public Domain

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290d

Fossil hunter, folklorist, evangelist, stonemason, newspaper editor, social justice campaigner, & geologist, Hugh Miller (1802–1856) – born #OTD, 10 Oct – deserves to be remembered in the company of Carlyle, Ruskin, Matthew Arnold & JS Mill as one of the leading moral & social thinkers of the 19th century

A 🎂🧵

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#Scottish #literature #19thcentury #Victorian #geology #fossil #HughMiller

A faded 19th-century sepia photograph of Hugh Miller. He is standing, dressed in workman's overalls, his shirt-sleeves rolled up. He has bushy hair and large sideburns, and his left elbow is propped up on a carved gravestone. His right hand rests on a large stonemason's maul, and he holds a chisel in his left hand.

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189d

started watching Voyage of the Continents
This seems like a good #documentary series on #geology. Not quite the production quality of the BBC though, is there anything similar produced by them?

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131d

Desert sentinels.

#Desert #Geology #Wildflowers #BloomScrolling #Flowers #Landscape #Photography #Darktable

A color landscape photo of four prominent sandstone towers standing in a landscape of sagebrush. The nearest tower on the left looks like a mitten held vertically. To the right of that in the distance is another tower that is a thin spire. To the right of that is a blocky rectangular flat-topped mesa, Further in the distance and immediately to the right of the mesa is another sharp tower spire. And a bit closer to the camera on the far right is a cylindrical sandstone tower. In the foreground in the lower left, where bright early morning sun is shining are clumps of small white wildflowers. The ground around the wildflowers is decomposed red sandstone. The sky is a soft blue with some puffy clouds.

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76d

Whoa. A security cam in Myanmar captured an earthquake fault rupture live. This may be the first ever caught on camera?

Watch the fence-line on the right. And note the power-line tower behind it.

👀

More on earthquake ruptures:
https://en.wikipedia.org/wiki/Earthquake_rupture

#Earthquake #Myanmar #FaultRupture #Geology

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70d

I always thought these were the best photos of the St Helens eruption that occurred 45 years ago today. Can you imagine being there and see that!!!

(Photos by John Christianson from Mt. Adams when Mt. St. Helens erupted on May 18, 1980.)

#Volcano #Geology #StHelens #Eruption #Mountain #Photography

Two color landscape photos stitched together one on top of the other. Top photo shows a mountain climber in black with a red backpack and yellow socks standing on a field of snow watching a distant volcano beginning to erupt. The bottom photo, taken perhaps a minute later shows the entire volcano engulfed in ash as the cloud of ash spreads outward. The climber who was standing on the field of snow has sat down with their hand on their head in sock by the scene before them. Their long handled ice axe remains stuck in the snow next to them.

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55d

An Ammonite fossil in a limestone wall in Newton St Loe, near #Bath #Somerset #UK. They are met with frequently in the rocks around Bath, and in the 18th Century were thought to be snakes turned to stone.
#Fossil #Ammonite #Photography #Geology

An ammonite in a stone wall. A spiral shapped fossil with yellow lichens growing on it.

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66d

I love #rocks. 🤍
Drawing them feels like learning a story of the land.

#art #drawing #sciart #geology #artwork #ArtistsOnMastodon #artist

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60d

A new atomic clock in space could help us measure elevations on Earth.

@technologyreview reports: "The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these measurements far more accurate."

Subscription may be required: https://flip.it/dbCEJp

#Space #ESA #Science #Geology

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43d

James Hutton (1726–1797), father of modern geology, was born #OTD, 14 June (NS; 3 June OS). One of the first European proponents of “deep time”, the conclusion of his 1788 paper “Theory of the Earth” has been called one of the most lyrical sentences in all of science:

The result, therefore, of our present enquiry is, that we find no vestige of a beginning,—no prospect of an end.

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https://www.nationalgalleries.org/art-and-artists/2808

#Scottish #literature #Enlightenment #18thcentury #DeepTime #science #geology