Jim Wood
@sierrageology.bsky.social
Fieldtrips, Sierra Tertiary geology, railroad history, dry stone construction, lime kiln preservation, travel, cultural history of all sorts
They look like pilaster facades, but must extend into the building some depth. Early version of 4x8 shear panels.
November 15, 2025 at 4:42 PM
They look like pilaster facades, but must extend into the building some depth. Early version of 4x8 shear panels.
You are preaching to the choir here! I hope to see this very topic presented at the International Festival of Stone next year in Dundee. If no one steps up, I'll do it. The theme is sustainability and circular economy of stone. Focus is on exterior landscapes.
November 15, 2025 at 3:22 PM
You are preaching to the choir here! I hope to see this very topic presented at the International Festival of Stone next year in Dundee. If no one steps up, I'll do it. The theme is sustainability and circular economy of stone. Focus is on exterior landscapes.
Fascinating stuff, this Pulhamite. Its longevity is apparently due to its composition based on lime or hydraulic lime. Some references say Portland cement.
Here is an authoritative reference...
web.archive.org/web/20151222...
Here is an authoritative reference...
web.archive.org/web/20151222...
web.archive.org
November 15, 2025 at 5:31 AM
Fascinating stuff, this Pulhamite. Its longevity is apparently due to its composition based on lime or hydraulic lime. Some references say Portland cement.
Here is an authoritative reference...
web.archive.org/web/20151222...
Here is an authoritative reference...
web.archive.org/web/20151222...
What? 1870s?
Hmm...they've outlasted many modern concrete bridges and embankment walls.
They don't make them like they used to.
Hmm...they've outlasted many modern concrete bridges and embankment walls.
They don't make them like they used to.
November 15, 2025 at 3:27 AM
What? 1870s?
Hmm...they've outlasted many modern concrete bridges and embankment walls.
They don't make them like they used to.
Hmm...they've outlasted many modern concrete bridges and embankment walls.
They don't make them like they used to.
Maybe they're on their way to Bodega Bay!
For the annual murder?
🤔
For the annual murder?
🤔
November 15, 2025 at 3:22 AM
Maybe they're on their way to Bodega Bay!
For the annual murder?
🤔
For the annual murder?
🤔
Left scheme. More contrast.
November 14, 2025 at 3:56 AM
Left scheme. More contrast.
The SF bobcats are wimps. Too much urban food available. Why work too hard for it?
November 11, 2025 at 8:18 PM
The SF bobcats are wimps. Too much urban food available. Why work too hard for it?
Not surprising, really. When the general population of a country in the modern age has lost its concern for even their local environment or nature, they arent likely to place much value or concern for issues in a foreign country that is out of sight, out of mind.
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Human connection to nature has declined 60% in 200 years, study finds
Prof Miles Richardson says people risk ‘extinction of experience’ in the natural world without new policies
www.theguardian.com
November 6, 2025 at 3:18 PM
Not surprising, really. When the general population of a country in the modern age has lost its concern for even their local environment or nature, they arent likely to place much value or concern for issues in a foreign country that is out of sight, out of mind.
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Thanks for posting this information. That's a unique kiln design with its subterranean circular access tunnel. Analogous to natural cavern bat habitat.
I've never thought about bats residing in our lime kiln but now I'm compelled to have a closer look in the nooks and crannies.
🤔
I've never thought about bats residing in our lime kiln but now I'm compelled to have a closer look in the nooks and crannies.
🤔
November 3, 2025 at 5:16 AM
Thanks for posting this information. That's a unique kiln design with its subterranean circular access tunnel. Analogous to natural cavern bat habitat.
I've never thought about bats residing in our lime kiln but now I'm compelled to have a closer look in the nooks and crannies.
🤔
I've never thought about bats residing in our lime kiln but now I'm compelled to have a closer look in the nooks and crannies.
🤔
What this design team has done for the building industry is what the organizers of the 2026 Stone Festival in Dundee hope to do in the exterior design and landscape architecture community...replace concrete and asphalt/tarmac with sustainable stone applications.
October 29, 2025 at 4:31 PM
What this design team has done for the building industry is what the organizers of the 2026 Stone Festival in Dundee hope to do in the exterior design and landscape architecture community...replace concrete and asphalt/tarmac with sustainable stone applications.
The resolution on that one is quite good.
The Forestry Supplies booth at GSA has one for merely $10 but I'm not sure that the clearity matches yours. You get what you pay for.
The Forestry Supplies booth at GSA has one for merely $10 but I'm not sure that the clearity matches yours. You get what you pay for.
October 21, 2025 at 12:08 AM
The resolution on that one is quite good.
The Forestry Supplies booth at GSA has one for merely $10 but I'm not sure that the clearity matches yours. You get what you pay for.
The Forestry Supplies booth at GSA has one for merely $10 but I'm not sure that the clearity matches yours. You get what you pay for.
In another administration, he would be the obvious choice for Ambassador to the UN.
October 15, 2025 at 3:01 PM
In another administration, he would be the obvious choice for Ambassador to the UN.
A nicely kept one, too.
October 15, 2025 at 2:56 PM
A nicely kept one, too.
Heh,
This reminded my of my pic from several years ago outside my window. This praying mantis was hanging around the feeder for about 3 days. Waiting for ants or bees? No.
Apparently, there are accounts of praying mantises attacking hummers.
Who knew?
This reminded my of my pic from several years ago outside my window. This praying mantis was hanging around the feeder for about 3 days. Waiting for ants or bees? No.
Apparently, there are accounts of praying mantises attacking hummers.
Who knew?
October 13, 2025 at 12:55 PM
Heh,
This reminded my of my pic from several years ago outside my window. This praying mantis was hanging around the feeder for about 3 days. Waiting for ants or bees? No.
Apparently, there are accounts of praying mantises attacking hummers.
Who knew?
This reminded my of my pic from several years ago outside my window. This praying mantis was hanging around the feeder for about 3 days. Waiting for ants or bees? No.
Apparently, there are accounts of praying mantises attacking hummers.
Who knew?
Some complicated or complex topics or concepts in science can only be conveyed visually. Why bother at all if your presentation lacks adaquate support material?
October 8, 2025 at 6:45 PM
Some complicated or complex topics or concepts in science can only be conveyed visually. Why bother at all if your presentation lacks adaquate support material?
You know how you've been returning your collected rock specimens to their place of origin...
Lets see you do that with this rock.
Lets see you do that with this rock.
October 8, 2025 at 5:03 AM
You know how you've been returning your collected rock specimens to their place of origin...
Lets see you do that with this rock.
Lets see you do that with this rock.
The very one!
A real killer those white bunnies!
A real killer those white bunnies!
October 1, 2025 at 8:52 PM
The very one!
A real killer those white bunnies!
A real killer those white bunnies!
Do you know where from? Local to Bay area?
October 1, 2025 at 8:50 PM
Do you know where from? Local to Bay area?
Is it real rock or faux?
October 1, 2025 at 3:32 PM
Is it real rock or faux?
Hmm...
Looks like the same killer rabbit thats in In Search of the Holy Grail.
🤔
Looks like the same killer rabbit thats in In Search of the Holy Grail.
🤔
September 29, 2025 at 3:58 AM
Hmm...
Looks like the same killer rabbit thats in In Search of the Holy Grail.
🤔
Looks like the same killer rabbit thats in In Search of the Holy Grail.
🤔