#strataday
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tomswadley.bsky.social
Late. But Strataday and Bugera tube amp day too
January 11, 2026 at 6:13 AM
art-h-ropod.bsky.social
Perfect for a late-breaking #Strataday post!
March 2, 2025 at 3:52 PM
geologyjohnson.bsky.social
#Strataday
abel-paleo.bsky.social Pascal Abel @abel-paleo.bsky.social · Apr 21
In the 80s, a big landslide near the German town of Mössingen led to the exposure of a profile of Upper Jurassic marine carbonates. It shows the succession from the marl-dominated Impressamergel Formation to the limestone-dominated Wohlgeschichtete Kalke Formation. #geology #Geologie #stratigraphy 🧪
Photo of a big geologic profile in the woods. The bottom layers are grey marls, the top layers are brown limestones.
April 21, 2025 at 9:09 AM
geologyjohnson.bsky.social
Reposting to #Strataday because Straturday is just men posing with guitars.
geologyjohnson.bsky.social GHOULology Johnson @geologyjohnson.bsky.social · Apr 13
#Straturday steeply dipping Mid-Silurian clastics and volcaniclastics at Marloes Sands, Pembrokeshire, Wales. If you look closely, you can see wave ripples on the exposed bedding plane indicating shallow water deposition. Some horizons are highly fossiliferous. #Geology
Photo of a shingle beach with a cliff of yellow and grey sandstone tilted almost vertical. There is grass on parts of the cliff, and a blue sky in the background.
April 13, 2025 at 3:08 PM
allochthonous.bsky.social
⚒️ #Strataday is an awesome hashtag that I hope will get some traction.
art-h-ropod.bsky.social Dave Rudkin @art-h-ropod.bsky.social · Mar 2
Perfect for a late-breaking #Strataday post!
March 2, 2025 at 6:33 PM
kerrieneet.bsky.social
Beautiful #texture in outcrops of the Cretaceous Mancos Shale. Members: Muley Canyon Sandstone Member on top underlain by the Blue Gate Member with the Ferron Sandstone Member at the bottom

#photobyraykenny #strataday #BlueSkyArtShow theme #texture
#AlphabetChallenge #WeekTforTime #geology #rocks
May 17, 2025 at 1:11 PM
geologyjohnson.bsky.social
A nice addition for #strataday
rovingrollo.bsky.social Hairy Neil @rovingrollo.bsky.social · Apr 29
Morning All !

I'll start the day with one from the archive for #RockinTuesday

Cliffs near The Needles, Isle of Wight, UK. April 2010

#Geology #Landscape #Photography #EastCoastKin
A chalk promontory sticks out from the cliffs into the English Channel. The layers than make up the rock can be clearly seen. At the base of the cliff the calm waters are turned a milky green by the chalk being washed out of the cliffs by the sea.
April 29, 2025 at 8:40 AM
art-h-ropod.bsky.social
It's #Strataday! For this week, I've chosen early #Silurian (~430 MYA) dolostones (of the Goat Island/Eramosa fms) that form the famous erosional #seastacks on Flowerpot Island, Fathom Five National Park, at the tip of the Bruce Peninsula, #Ontario 🇨🇦 #Canada 🇨🇦
March 15, 2025 at 6:35 PM
geologyjohnson.bsky.social
Another one for #strataday
tectonic5rox.bsky.social KeleighM @tectonic5rox.bsky.social · Apr 29
Kimmeridge on Sunday. Went for a relaxing walk and bumped into Steve Etches from #theetchescollection before his team lugged another interesting fossil around the cliff.
Never a dull moment there.
#fossils #kimmeridgeclay #paleontology #lovedorset #bythesea #jurassiccoast
Photo of cliffs in the distance to the right and banks of rock stretching into the open sea coming around the bay with grasses and shrubs in the foreground. There is a slight mist handing over the distant cliffs. The sky above is clear and cloudless.
April 29, 2025 at 8:45 AM
geologyjohnson.bsky.social
#Strataday some urban stratigraphy
londongeodiversity.bsky.social London Geodiversity Partnership @londongeodiversity.bsky.social · May 3
Living in a London Chalk quarry! Park Hill Chalk pit in Carshalton. This flinty chalk was burned for lime and knapped flints were used to face nearby cottages. More at londongeopartnership.org.uk/wp/wp-conten...
A substantial cliff face of white Chalk, the remains of an abandoned quarry, stands at the end of a row of mid 20th century residential flats and their garden.
May 3, 2025 at 8:27 AM
calamitaman.bsky.social
#StrataDay Lime-turbidite layers surrounded by shales in the Cretaceous Palombini shale formation. Quercianella, Leghorn, Italy

#geology #beddingplanes #sedimentaryrock #outcrop
⚒️
Inclined beds of limestone and shale
April 19, 2025 at 2:56 PM
clarkeocrinus.bsky.social
A Devonian bioherm from Alpena, Michigan. Most of the layers are flat, but the middle is bulged where a Devonian coral reef flourished. Lots of nice crinoids come from this layer also.

#Strataday
April 26, 2025 at 10:34 PM
calamitaman.bsky.social
I am late for #StrataDay !
Hope you can excuse me if I post a nice outcrop of Rosso Ammonitico limestone from Campiglia Marittima (Italy) 😊

my favorite sedimentary rock...
#geology #limestone #RossoAmmonitico
bedding planes of Rosso Ammonitico limestone
April 13, 2025 at 4:35 PM
art-h-ropod.bsky.social
It’s #Strataday!
jcody.ca John Cody @jcody.ca · Mar 8
What do you see here? A cliff, Rocks?
I see a shallowing upwards profile of offshore muds to lower shoreface silts, abruptly overlain by middle to upper shoreface sandstones incised by fluvial cross bedded sandstones. These are Upper Cretaceous shoreface sequences

#geology #Wyoming #photography
March 9, 2025 at 12:42 AM
art-h-ropod.bsky.social
Excellent. #Strataday on Sunday.
jcody.ca John Cody @jcody.ca · Apr 20
The Lower Cambrian strata exposed near Moraine Lake look spectacular in monochrome.

Moraine Lake, Banff National Park, Alberta, Canada.

#geology #blackandwhitephotography #monochrome #blackandwhitephoto #bnwphoto #bnwphotography #blackandwhite #photographersonbluesky #travelphotography
April 20, 2025 at 7:04 PM
art-h-ropod.bsky.social
It's #Strataday!!
jeremysell.bsky.social Jeremy Sell @jeremysell.bsky.social · Apr 4
Sable Creek carving its way through 75 feet of Munising Sandstone at Sable Falls. These sediments were deposited in a shoreline environment sometime in the Cambrian Period (487-539 million years ago). Pictured Rocks National Lakeshore, Michigan, 25 Jul 2012.
Sable Creek carving its way through 75 feet of Munising Sandstone at Sable Falls. These sediments were deposited in a shoreline environment sometime in the Cambrian Period (487-539 million years ago). Pictured Rocks National Lakeshore, Michigan, 25 Jul 2012.
April 5, 2025 at 3:50 PM
art-h-ropod.bsky.social
Timeshift to #Strataday!
jcody.ca John Cody @jcody.ca · Apr 4
An outcrop of lower to middle shoreface sequence of the Cretaceous Frontier Formation, Steinaker Reservoir Utah, USA

#geology #rockymountains #Utah #landscape #landscapehotography #bluesky #photographersofbluesky
April 5, 2025 at 5:38 PM
callanbentley.bsky.social
For #Strataday, please consider this outcrop of graded bedding in (cleaved) Martinsburg Formation, late Ordovician turbidites shed into the Appalachian Basin as a result of Taconian mountain-building to the east. ⚒️
Outcrop showing vertical bedding that fines to the left. A pencil provides a sense of scale. Cleavage dips to the right.
April 19, 2025 at 4:01 PM
allochthonous.bsky.social
⚒️ #strataday
mountainscalling.me Eric @mountainscalling.me · Mar 8
The Control Tower -- near The Southern Wave in Coyote Buttes.

The rock formations in Coyote Buttes are out of this world!

📍Vermilion Cliffs National Monument

👽

#protectourparks #nationalparks #parkchat #photography #nature #travel #arizona #utah #hiking #wilderness #saveNationalMonuments
The Control Tower. Coyote Buttes South. Feb 2025
March 8, 2025 at 4:42 PM
bedform.org
Oh we can make it a thing…
One day late for #Strataday

Some ceramicists out for a geology-of-clay day last month in some Pliocene fluvial deposits at Red Bluff MS
Purple clays overlain by cross bedded yellow sands with a group of people standing below Group of people looking at a stack of fluvial cross bedded sands
March 2, 2025 at 8:20 PM
bedform.org
i like #strataday better
March 2, 2025 at 11:35 PM
lindamaryolivine.bsky.social
Cleavage / bedding relationships. #OUGS Severnside trip to Llyn du Bach manganese mines, North Wales with Tom Cotterell, then at the National Museum of Wales. #Strataday
May 3, 2025 at 10:38 AM
art-h-ropod.bsky.social
Taking a #Strataday break from the turmoil to revisit one of my old field haunts. Mt Stephen (3199 m) in #Yoho NATIONAL Park reveals a thick succession of #Cambrian carbonate & clastic units incl. the famous #BurgessShale. A #mountain of many moods. #BritishColumbia #Canada 🇨🇦
March 8, 2025 at 3:30 PM
art-h-ropod.bsky.social
#Strataday!
June 7, 2025 at 4:54 PM
art-h-ropod.bsky.social
#Strataday!
May 4, 2025 at 12:05 AM