- #1
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Here is one I found on Twitter:
Please add others!
Please add others!
Click For Summary
Discussion Overview
The thread focuses on sharing and discussing geological images, including photographs of various geological features and phenomena. Participants share their own images and experiences while also expressing interest in the geological processes behind these visuals.
Discussion Character
- Exploratory
- Conceptual clarification
Main Points Raised
- One participant shares a picture of ruin marble seen in the Natural History Museum in London.
- Another participant discusses water depth in the San Francisco Bay Area and seeks clarification on color codes used in a nautical chart.
- A participant mentions a Twitter post featuring volcanic lightning and shares a link to a gallery of volcano photos by Takehito Miyatake.
- Discussion includes a personal account of visiting Taal Volcano in the Philippines, highlighting the process of charge separation in volcanic lightning.
- One participant describes a geological feature observed in Olympic National Park, detailing the formation of seabed layers and the geological history related to the Siletzia island arc.
- Another participant expresses enthusiasm for geological images and mentions plans to share their own photos from the Canadian Rockies and Iceland.
Areas of Agreement / Disagreement
Participants generally share a common interest in geological images and phenomena, but there are no explicit agreements or disagreements on specific geological interpretations or claims.
Contextual Notes
Some participants reference specific geological processes and formations, but these are based on personal observations and interpretations rather than established consensus.
Who May Find This Useful
Individuals interested in geology, photography of natural phenomena, and those who enjoy sharing and discussing geological features and processes.
- #2
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Ruin marble. I've seen this particularly atmospheric example in the Natural History Museum in London.
- #3
DaveE
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Water depth in SF Bay Area. You get 0 bonus points for finding the San Andreas Fault.
- #4
berkeman
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Link to source? I'm trying to figure out what the color codes mean...DaveE said:
- #5
DaveE
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Sorry it's a really old picture from my HDD. But a nautical chart will tell you what you want to know. Anyway, as a sailor in the bay I can guarantee that blue is deep, red is shallow, and green is in between.berkeman said:
- #6
DennisN
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BillTre said:
The twitter post contained a link to a gallery with more amazing photos of volcanoes (including volcanic lightning) by the same photographer (Takehito Miyatake).
Warmly (or maybe hotly
) recommended:http://www.take-miyatake.com/gallery/sakurajima.html
- #7
davenn
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BillTre said:
I love volcanic lightning ... partly because of my love for all things storms
the process for generating eruption lightning is just the same as for a thunderstorm
namely charge separation between particles in either the ash cloud or raindrops/ice crystals, respectively.
The Taal Volcano in Luzon, Philippines. I have been out to the island in the centre of the crater a couple of times.
but, fortunately, not during an eruption like this .....
Last edited:
- #8
Mark44
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This fits with "cool geological images" IMO. This picture was taken about 4 years ago on a backpack trip in the SE part of Olympic National Park. It shows seabed layers upended by about 70 degrees. The current geology thinking holds that the Olympics were formed when an island arc, Siletzia, was too large to comfortably slide into the trench that defined the boundary between the ocean floor plate and the North American plate. There are many places in the Olympics with rock layers contorted as seen in this picture. In some places, the layers got upended past the vertical, and then partially bent back down, making a U shape.
The lake in this basin is named Lake of the Angels.
The lake in this basin is named Lake of the Angels.
- #9
davenn
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Mark44 said:
very cool
I have some photos I took in the Canadian Rockies in 2019 that also show some crazy tectonic processes
when I get a chance i will post some
Also saw/photo'ed some cool basalt lava columns in Iceland a couple of weeks ago
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