#mudstone
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johnme23.bsky.social
Blue sky at last light: Lybrook badlands, NW New Mexico

#blueskymonday #ECK #landscapephotography #badlands #lybrook #newmexico #hiking #rockformations #hoodoos
A blocky outcrop of hoodoos, with dark ironstone capping light-colored mudstone, is lit by the setting sun, while ironstone boulders lie on a slope of mudstone arrayed below. Another slope of lighter-colored soil rises at an angle to the right. The sky is faultlessly blue.
November 9, 2026 at 3:01 PM
johnme23.bsky.social
Rocks aplenty in a Bisti wash, with plenty more capping surrounding formations.

#rockintuesday #ECK #bisti #wilderness #hiking #newmexico #landscapephotography #blackandwhite #classicmono #geology #erosion #notrail #hiking
A desert drainage piled high with rocks and boulders, and a bigger boulder on the slope at upper left. The weathered walls at right are grainy, looking like they could crumble. On the horizon, shale and mudstone hillocks are capped with turrets of ironstone, while the sky beyond shows hints of dissipating contrails.
November 10, 2026 at 4:24 PM
goingundergrounduk.bsky.social
It’s a bog standard method for tunnelling used in mining used globally. The UK has used tunnel boring machines instead of drill & blast because almost all recent major tunnelling here has been done in ground ideal for TBMs (chalk, clays, Redcar mudstone etc). TBMs really struggle in hard rock though
November 11, 2026 at 10:19 AM
johnme23.bsky.social
Off the level: undisclosed badlands locality, NW New Mexico

#blueskymonday #ECK #badlands #erosion #hoodoo #mudstone #hiking #backofbeyond #notrail #newmexico
A blocky boulder of orangish sandstone sits at an angle atop a pillar of mudstone against a faultless blue sky, with a yellowish, deeply eroded hillside behind it. At left, a more pink-toned slope is topped by a dead tree, with a live green bush behind and above it.
November 2, 2026 at 3:48 PM
johnme23.bsky.social
𝗧𝗼 𝗥𝗶𝘀𝗲 𝗔𝗯𝗼𝘃𝗲

𝘚𝘰𝘮𝘦𝘵𝘪𝘮𝘦𝘴, 𝘢𝘭𝘭 𝘪𝘵 𝘵𝘢𝘬𝘦𝘴
𝘛𝘰 𝘳𝘪𝘴𝘦 𝘢𝘣𝘰𝘷𝘦 𝘵𝘩𝘦 𝘤𝘳𝘰𝘸𝘥
𝘐𝘴 𝘴𝘬𝘦𝘸𝘦𝘥 𝘱𝘦𝘳𝘴𝘱𝘦𝘤𝘵𝘪𝘷𝘦.
𝘚𝘵𝘢𝘯𝘥𝘪𝘯𝘨 𝘵𝘢𝘭𝘭 𝘣𝘺 𝘪𝘵𝘴𝘦𝘭𝘧
𝘊𝘢𝘯 𝘮𝘢𝘬𝘦 𝘢 𝘴𝘵𝘢𝘵𝘦𝘮𝘦𝘯𝘵.

Undisclosed badlands locality, NW New Mexico

#stunday #eck #blackandwhite #classicmono #badlands #geology #erosion #newmexico #backofbeyond #hiking #notrail
A huge, deeply eroded mound of mudstone fills the center of the image, with a harder-surfaced cliff face behind of a much lighter shade. To the left, another shade of strata butts up against a ragged series of cliffs beneath a featureless dark gray sky. Canon 6D, f/8, 31mm
November 1, 2026 at 4:24 PM
matthewperren.bsky.social
There are sandstone and mudstone beds up there but, at some point they are going to be excavating the dolorite which is very hard and, one would hope, is budgeted for in the costings
November 4, 2026 at 8:26 AM
bylines.cymru
A repeating pattern of coal and marine mudstone offers clues to climate change more than 300 million years ago
 | Paul Bright
When earth’s orbit shaped the South Wales Coalfield
A repeating pattern of coal and marine mudstone offers clues to climate change more than 300 million years ago
bylines.cymru
October 30, 2026 at 9:30 AM
robertferry.bsky.social
“Pressurized CO2 had sent cracks a quarter of the way up through the 3000-foot-thick layer of mudstone. If it breached the rest, it could leach into the pan-Saharan aquifer, acidifying a source of drinking water millions of people depend on.”

Hollywood, make this movie.
The public needs to know.
October 30, 2026 at 9:54 PM
brandontbishop.bsky.social
"When project engineers again used sound waves and other tools to map the layers underground, they arrived at an alarming discovery: Pressurized CO2 had sent cracks a quarter of the way up through the 3000-foot-thick layer of mudstone."

My questions still stand.
October 30, 2026 at 4:40 PM
johnme23.bsky.social
Saw in a FB post from Navajo guide Kialo Winters that the Alien Throne has fallen. His post includes photo evidence of the structure's collapse. Here's my 4-image tribute to Tsé Bináká Níyol from two prior visits.

#rockformation #newmexico #blueskyartshow #spooky #hoodoos #valleyofdreams #badlands
A bicycle-seat shaped caprock sits atop an extravagantly sculpted mudstone base. An abundance of other hoodoos are scattered about the horizon, with a deep blue sky and wispy clouds above. The same formation from a different angle, with a large dished-out boulder in the left foreground and another hoodoo looming behind. The same formation from the other side, surrounded by other hoodoos of all sizes and descriptions. Gray clouds add a bit of drama. Here the alien throne appears as a bit player in the distant background while other more robust hoodoos take the forefront. The sky is unblemished blue.
October 31, 2026 at 2:52 PM
burritojustice.bsky.social
“Pressurized CO2 had sent cracks a quarter of the way up through the 3000-foot-thick layer of mudstone. If it breached the rest, it could leach into the pan-Saharan aquifer, acidifying a source of drinking water millions of people depend on”
PROPUBLICA Benson was still getting settled into her new job at Stanford when the project in Algeria ran into major problems. On a 118-degree day in 2007, In Salah's inspectors heard CO2 whistling through the top of an abandoned oil well nearly a mile from the nearest injection site. Engineers had believed it would take years before the CO2 plume could spread so far underground, but the gas had cracked through the sandstone and found a new path. To stop the leak, workers poured cement into the well, plugging it permanently. But soon a second problem arose: Satellite data revealed the desert floor above the injection sites had bulged. When project engineers again used sound waves and other tools to map the layers underground, they arrived at an alarming discovery: Pressurized CO2 had sent cracks a quarter of the way up through the 3000-foot-thick layer of mudstone. If it breached the rest, it could leach into the pan-Saharan aquifer, acidifying a source of drinking water millions of people depend on.
October 30, 2026 at 3:40 PM
rworthen.bsky.social
"Pressurized CO2 had sent cracks a quarter of the way up through the 3000-foot-thick layer of mudstone. If it breached the rest, it could leach into the pan-Saharan aquifer, acidifying a source of drinking water millions of people depend on. "
October 30, 2026 at 2:58 PM
timholtwilson.bsky.social
400 million years ago in Devonian times, the Caledonian mountain range extended between Scotland & Norway. As it eroded, debris was swept onto surrounding plains by flash floods, and settled as conglomerate pebble beds which now form the stunning cliffs at Auchmithie. @scottishgeology.bsky.social
The cliffs at Auchmithie, Angus, are composed of Devonian conglomerates over 380 million years old. The cliffs in the picture are about 60 ft high and red in colour due to Iron Oxide. An outcrop of Old Red Sandstone conglomerates composed of thousands of water-rounded pebbles and cobbles. They were deposited in desert conditions at the foot of a mountain range composed of volcanic and other igneous rocks. Vertical view of the wave-cut platform of the beach at Auchmithie showing a water-worn Old Red Sandstone conglomerate bed and a lot of loose pebbles lodged in its fissured surface. A lovely collection of ORS pebbles and cobbles from Auchmithie: barite, red jasper, green jasper, rhyolite tuff, vesicular basalt lava, porphyry, metaquartzite, siliceous mudstone, among them.
October 30, 2026 at 2:01 PM
kristinmcfall.bsky.social
Pressurized CO2 sent cracks a quarter of the way up through the 3000-foot-thick layer of mudstone. If it breached the rest, it could leach into the pan-Saharan aquifer, acidifying a source of drinking water millions of people depend on.

CO2 capture never worked.

www.propublica.org/article/carb...
How a Secret Vote by U.N. Scientists Legitimized Carbon Capture and Skewed Decades of Climate Policy
A U.N. report concluded carbon capture could offset fossil fuels’ effect on climate change. Two decades later, the process has failed to meaningfully scale up, and it’s proving hard to take the promis...
www.propublica.org
October 30, 2026 at 4:44 PM
johnme23.bsky.social
A rock of many parts, formerly within GSENM

#rockintuesday #eastcoastkin #blackandwhite #classicmono #landscapephotography #geology #utah #hiking #notrail
A multiform caprock on a pedestal of sild and mudstone, showing partial layering beneath a hard sandstone cap. Tilted layers of sediment in the basal rocks strike upward from left to right, while the jumble of rocks and sediment in the background adds yet more complexity. Canon 6D, f/11, 41mm
October 27, 2026 at 3:27 PM
assdog69.bsky.social
girl that will never fire enough shingles

got a couple of roofs done for smaller buildings at least - decorated the courtyard next to the brewery & the rooftop of my cobblestone hall too

thinking I might try to add more slate or light mudstone bricks into walls to give em a little more.. something
October 22, 2026 at 12:47 AM
timdemko.xyz
You need to see these things, Dave. Life-changing!
Photo of a mound-like feature, interpreted as the deposits of a sediment wave, in a quarry in the Mississippian Fort Payne Limstone near Huntsville, Alabama USA Photo of large-scale cross stratification, interpreted as the deposits of sediment wave, in a quarry in the Mississippian Fort Payne Limstone near Huntsville, Alabama USA Phtos of bi-gradational succesions of coarser and finer carbonate lithofacies, including wackestone, packstone, and mudstone. There i a jand for scale. Photopanorama of large-scale cross stratification, interpreted as the deposits of sediment wave, in a quarry in the Mississippian Fort Payne Limstone near Huntsville, Alabama USA
October 22, 2026 at 3:09 PM
retromancers.bsky.social
Cosmic Ark's famous starfield relies on very precise (and unintended!) behavior of the Atari 2600 TIA's horizontal motion circuitry.

It's a great reality check for an emulator, and now it works correctly in Mudstone.

atarihq.com/danb/files/T...

#Atari2600 #Emulation
October 20, 2026 at 7:49 PM
timholtwilson.bsky.social
An incalculable quantity of exotic glacial erratic boulders is lying quietly beneath the surface of the 'boulder clay' plateau of High Suffolk.
Pond excavation has brought over 25 of them blinking into daylight in one day at Finningham @megwildflowers.bsky.social.
#Suffolk #Pleistocene #geology
October 22, 2026 at 7:51 AM
ianhall.bsky.social
If Milankovitch cycles mean anything to you, this is fascinating.

www.nature.com/articles/s41...
Earth–Moon and Solar System history recorded in Mesoproterozoic Grand Canyon strata - Nature Geoscience
Cyclostratigraphic analysis of a ~1.2 billion-year-old rhythmically bedded mudstone formation in the Grand Canyon shows that the frequency and amplitude of Milanković cycles were markedly different th...
www.nature.com
October 15, 2026 at 7:16 AM
coastalpaleo.bsky.social
Parabalaenoptera was found in the Santa Cruz Mudstone at Bolinas, and Point Reyes in general, is a beautiful and rarely visited part of the CA coast - few know that there is such a large national park and wilderness barely more than an hour's drive away from downtown San Francisco! 🐬🦑🦖🧪
The cliffs of Santa Cruz Mudstone at Bolinas in Marin County
October 14, 2026 at 4:38 PM
ferwen.bsky.social
Earth–Moon and Solar System history recorded in Mesoproterozoic Grand Canyon strata www.nature.com/articles/s41...
Earth–Moon and Solar System history recorded in Mesoproterozoic Grand Canyon strata - Nature Geoscience
Cyclostratigraphic analysis of a ~1.2 billion-year-old rhythmically bedded mudstone formation in the Grand Canyon shows that the frequency and amplitude of Milanković cycles were markedly different th...
www.nature.com
October 14, 2026 at 3:25 PM
natgeosci.nature.com
Brief Communication: The frequency and amplitude of Milanković cycles preserved in a ~1.2 billion-year-old Grand Canyon section were markedly different than the present.
www.nature.com/articles/s41...
Earth–Moon and Solar System history recorded in Mesoproterozoic Grand Canyon strata - Nature Geoscience
Cyclostratigraphic analysis of a ~1.2 billion-year-old rhythmically bedded mudstone formation in the Grand Canyon shows that the frequency and amplitude of Milanković cycles were markedly different th...
www.nature.com
October 14, 2026 at 8:10 AM
daverodland.bsky.social
For #TraceFossilTuesday, we've got a mid-Pennsylvanian tetrapod trackway from a West Virginia coal mine, cunningly concealed behind the stratigraphic elevator in the Paleozoic hall at the Carnegie Museum of Natural History.

Don't mess with Grandma Hellbender! 🧪⚒️🐾🦎
Middle Pennsylvanian tetrapod trackway in black mudstone, from a coal mine in West Virginia, mounted in an inconspicuous spot in the Paleozoic hall at Carnegie Close-up view of early tetrapod trackway, showing clawless, four toe impressions in black mudstone
October 13, 2026 at 11:09 AM
retromancers.bsky.social
Meet Retromancers.

We build portable C11 emulators:

Andesite: ZX Spectrum Next
Chert: NES
Clay: ZX Spectrum
Limestone: MSX
Mudstone: Atari 2600
Onyx: PC
Shale: Odyssey 2
And more to come!

Windows, macOS, Linux, Android, iOS & WASM.

#Emulation #RetroComputing #RetroGaming
October 12, 2026 at 9:40 PM