Owen A. Callahan, Ph.D.'s Avatar

Owen A. Callahan, Ph.D.

@eegeos.bsky.social

Structural and geothermal geologist. Water/rock interaction, faults & fractures, deformation, mineralization, hot springs. UAS, GIS. Owner, En Échelon Geosolutions (www.eegeos.com). Associate faculty at Cabrillo College, Santa Cruz, CA. He/Him.

385 Followers  |  359 Following  |  170 Posts  |  Joined: 20.08.2023  |  2.0802

Latest posts by eegeos.bsky.social on Bluesky

Right! It's a great tool, doesn't force you into the cloud, and works on Macs!

24.09.2025 18:27 — 👍 2    🔁 0    💬 1    📌 0

After that press conference, I'm having flashbacks to the good old days of the pandemic when drinking bleach, internal UV exposure, and dewormer were all bandied about from the lectern...

23.09.2025 15:37 — 👍 1    🔁 0    💬 0    📌 0
Blended daytime visible light (right) and nighttime thermal (left) images from drone imagery collected near Steamboat Hot Springs resort (NV) showing hot water from their production well (rig on well for clearing scale), and warm ground in fissures and below the parking lot.

Blended daytime visible light (right) and nighttime thermal (left) images from drone imagery collected near Steamboat Hot Springs resort (NV) showing hot water from their production well (rig on well for clearing scale), and warm ground in fissures and below the parking lot.

22.09.2025 02:35 — 👍 2    🔁 0    💬 0    📌 0

Or whose meme coin to buy.

20.09.2025 14:54 — 👍 2    🔁 0    💬 0    📌 0

You should pose these prompts to Terra Rogers @cleanaircatf.bsky.social

20.09.2025 01:42 — 👍 1    🔁 0    💬 0    📌 0

$1 trillion would be >$1.9 million, every single minute of the year... Or a rate of >$48 million / hr for the 2080 working hours in a year. 🤢

14.09.2025 04:35 — 👍 4    🔁 1    💬 0    📌 0

Cryptic earthquake/scicomm/hazard subskeets increase out FOMO

08.09.2025 17:01 — 👍 1    🔁 0    💬 1    📌 0

The first time I drove through Arizona I wondered why they had all those Tibetan flags around.

16.08.2025 05:11 — 👍 3    🔁 0    💬 0    📌 0
Post image

Oblique nighttime thermal image of a Cascade volcano and glacial stream...

24.07.2025 00:23 — 👍 8    🔁 0    💬 1    📌 0
Vivid green landscape with birch and fir in the foreground, tall, snowy alpine mountains in the background. Blue sky and wispy clouds above.

Vivid green landscape with birch and fir in the foreground, tall, snowy alpine mountains in the background. Blue sky and wispy clouds above.

This past week or two, I exchanged my typical Basin and Range field views with tree-choked, boulder-strewn streams in the North Cascades.

23.07.2025 22:47 — 👍 9    🔁 0    💬 1    📌 0

I like how the river stays a river without banks as it enters the ocean then just turns into vegetation

07.07.2025 21:49 — 👍 0    🔁 0    💬 0    📌 0

Yup

06.06.2025 01:57 — 👍 0    🔁 0    💬 0    📌 0

Despite the downward spiral of all that is rational, it still feels good to read "Paper submitted." (To a community-driven diamond open access journal) #science

05.06.2025 20:00 — 👍 3    🔁 0    💬 0    📌 0

Let's just not with the click bait headlines, ok?

03.06.2025 13:50 — 👍 0    🔁 0    💬 0    📌 0
Far Side comic showing a student at "Midvale school for the gifted" pushing against a door marked pull.

Far Side comic showing a student at "Midvale school for the gifted" pushing against a door marked pull.

16.05.2025 20:22 — 👍 2    🔁 0    💬 1    📌 0

I've seen landslides in WA monitored by time lapse photography, which is cool but not the same 😥

13.05.2025 15:40 — 👍 2    🔁 0    💬 0    📌 0

Bullshit.

12.05.2025 15:30 — 👍 0    🔁 0    💬 0    📌 0

I feel that

12.05.2025 13:29 — 👍 1    🔁 0    💬 0    📌 0
Post image Post image

Here's a nice example of AI searches being total crap:

10.05.2025 20:24 — 👍 1    🔁 0    💬 1    📌 1

I use monthly insurance for commercial photogrammetry (drone) work, but that is a bit different

08.05.2025 15:43 — 👍 1    🔁 0    💬 1    📌 0
Preview
Hi LinkedIn, Unfortunately Elmo was recently laid off because of the… | Elmo from Sesame Street | 361 comments Hi LinkedIn, Unfortunately Elmo was recently laid off because of the federal budget cuts. Elmo worked at Sesame Street for 45 years. Elmo is sad. Elmo loved his time at Sesame Street. Elmo is goin...

This is incredibly sad, but the comments are strangely uplifting. I grew up on Sesame Street! www.linkedin.com/posts/elmo-f...

08.05.2025 00:10 — 👍 3    🔁 0    💬 0    📌 0

I'm pretty sure my 7yo is mostly hot dog, unfortunately.

05.05.2025 03:47 — 👍 4    🔁 0    💬 0    📌 0

Beautiful shot

05.05.2025 03:38 — 👍 1    🔁 0    💬 0    📌 0

Influencers and "go fund me"s are a metastasization of capitalism.

05.05.2025 03:37 — 👍 1    🔁 0    💬 0    📌 0

I know it's wrong, but I really have a strong urge to tackle the shit out of the goons.

05.05.2025 03:30 — 👍 1    🔁 0    💬 1    📌 0

Or my kids hoarding my Spotify account.

30.04.2025 04:07 — 👍 0    🔁 0    💬 0    📌 0

But to your original point... Agreed! Supercritical fluids are probably the right way to imagine fluids at depth! Even more so with CO2.

28.04.2025 23:38 — 👍 1    🔁 0    💬 0    📌 0

Maybe I misread your original post. Yes, geothermal systems are anonymously warm, and most big MW systems have magmatic roots, but not all. Basin and Range style systems commonly lack magmatic signatures, but still have very high shallow gradients and elevated temperatures at depth.

28.04.2025 23:35 — 👍 1    🔁 0    💬 1    📌 0

I think you mean a well with an average continental geothermal gradient. Most "geothermal wells" have higher gradients, getting close to the boiling point curve for water. In these conditions you get supercritical "water" by 3.5-5.5km. Check out Fig2: cdn.catf.us/wp-content/u...

28.04.2025 18:32 — 👍 1    🔁 0    💬 1    📌 0

@ologies.bsky.social 👇

21.04.2025 15:47 — 👍 3    🔁 0    💬 0    📌 0

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