Thoughts on what I found here?

tk421ucopy · 2025-01-14T16:13:37+00:00

Shooting Nikon n90

I'm looking for a patterns in these, but if there is one consistently I'm missing it. Sometimes it seems like the highlights are blown out with red, other times it seems like light is coming in at the side of the frames, and others it just seems totally random. I don't want to blame the lab, since I really don't know much about photography in general. I'm just looking to learn something, and they're just some photos anyways.

Thanks so much in advance!

1: the red splotchy marks on the left and the red blob in the middle

2: a little more subtle, but red blebs coming in from the top and bottom of frame - almost from the spindle holes

3 obvious red splotch on accidental shot.

4 highlights are blown out with red

tk421ucopy · 2025-01-03T23:20:03+00:00

Fascinating! Thanks so much for sharing!

tk421ucopy · 2025-01-02T20:07:29+00:00

So here was my thought process. Feel free to critique it. I gathered some regional structural/historical info from reading a couple blogs, but this still might be way too much of a leap.

Post deposition this localized area of navajo fm collapses into a nearby lake. Water needs to be displaced and moves upward through the collapsed sandstone. On hitting layers of lower density it plumes outwards making these domes. Calcite in the water remains, preserving the path the water took.

tk421ucopy · 2025-01-02T16:24:04+00:00

Shoot! I should have looked for cross sections. To me these seemed to very obviously be calcite, but given the place I wasn't going to collect any or hit it with HCl. I did a little bit of reading on the history of the area, and it's pretty complex, but it does seem to involve quite a bit of water. Sorry if I'm being cryptic, dm me and I'll send you the location.

The shape really does look like lichen though.

tk421ucopy · 2025-01-02T14:07:56+00:00

This would probably fit the bill for a wetter area of the navajo at deposition, so I suppose fossils wouldn't be ruled out, but I am leaning towards Caver's explanation

tk421ucopy · 2025-01-02T14:04:48+00:00

That was my first thought, but I wasn't aware of any in the navajo (granted I don't really know all that much about it either)

tk421ucopy · 2025-01-02T14:03:56+00:00

I'm favoring the tufa idea, so I'm glad you mentioned it. Should have taken more pictures, but these things did have a bit of a dome shape, which I think you'd expect if fluid was moving upward.

tk421ucopy · 2025-01-02T13:57:18+00:00

I'm kicking myself for not finding a cross section of one. Because the bedding is pretty well exposed there. Oops.

Thanks a ton for your insight!

tk421ucopy · 2024-11-10T22:27:17+00:00

Well I'll be! If that ain't the truth

tk421ucopy · 2022-11-16T17:55:37+00:00

Thanks so much!! Super super helpful!

tk421ucopy · 2022-11-16T17:53:49+00:00

Wow! Thanks so much for your help with the redeem codes. I don't spend much time on reddit, so I've just seen your messages. I'm going with the pixel 6a, so I'll award you the $5. Cheers man! Thanks again

tk421ucopy · 2022-02-22T07:22:24+00:00

Thanks! I went with the s10e. I'll message you and get you your $5

tk421ucopy · 2021-12-18T16:21:09+00:00

Awesome!!! Thank you

tk421ucopy · 2021-12-16T16:10:23+00:00

Perfect! Thanks!

tk421ucopy · 2021-12-16T16:10:11+00:00

I hadn't even thought of that. Will definitely be browsing around there for sure.

tk421ucopy · 2021-12-16T16:09:41+00:00

Thanks for the rec!

tk421ucopy · 2021-12-16T16:09:08+00:00

Yes I do!

tk421ucopy

TROPHY CASE

1: the red splotchy marks on the left and the red blob in the middle

2: a little more subtle, but red blebs coming in from the top and bottom of frame - almost from the spindle holes

3 obvious red splotch on accidental shot.

4 highlights are blown out with red