🧵 /ggg/ - Geology and Geophysics General
Anonymous at Mon, 22 Jul 2024 07:53:46 UTC No. 16291889
Structural geology edition
Anonymous at Mon, 22 Jul 2024 08:34:05 UTC No. 16291914
what do we know about stochastic seismology
Anonymous at Mon, 22 Jul 2024 09:56:15 UTC No. 16291939
>>16291914
>what do we know about stochastic seismology
what exactly about it? There's much to unpack in stochastic seismology
Anonymous at Mon, 22 Jul 2024 11:34:57 UTC No. 16291996
>>16291939
i wanna know about it but i dont have the geophysics background. which ik sounds kind of funny but i got interested in it when i was studying stochastic processes
Anonymous at Mon, 22 Jul 2024 11:59:15 UTC No. 16292021
Opinion on the YDIH?
Anonymous at Mon, 22 Jul 2024 19:10:28 UTC No. 16292502
>>16291889
>Structural geology edition
this arouses me
Anonymous at Mon, 22 Jul 2024 19:18:31 UTC No. 16292526
>>16291889
>Geology and Geophysics General
being geophysics part of geology, the title is a bit redundant, but ok, I like the acronym
Anonymous at Tue, 23 Jul 2024 09:28:57 UTC No. 16293232
>>16291996
>i wanna know about it but i dont have the geophysics background
I'm not a geophysicist nor a seismologist, just a geologist, so my knowledge and understanding can only go so far in that field of knowledge.
There's probably stuff written about it for a layman to understand. You always ask chatGTP your questions, it does a somewhat good job with tasks like those, but ya know, it might spit out nonsense.
Anonymous at Tue, 23 Jul 2024 09:29:59 UTC No. 16293233
>>16292021
>Opinion on the YDIH?
Not my area of research, so I have no opinion. Seems to be a hypothesis, so much I know.
Anonymous at Tue, 23 Jul 2024 19:33:41 UTC No. 16293814
bump for Gods great earth
Anonymous at Wed, 24 Jul 2024 06:03:11 UTC No. 16294384
>>16291889
The moon causes of plate tectonics
Anonymous at Wed, 24 Jul 2024 07:35:17 UTC No. 16294438
>>16294384
>The moon causes of plate tectonics
...
what was that?
Anonymous at Wed, 24 Jul 2024 10:48:46 UTC No. 16294530
>a new study published in Nature Communications has revealed a surprising new aspect: solar radiation can also affect the Earth's deep interior.
Laypeople-level:
https://phys.org/news/2024-07-scien
Researcher-level:
https://www.nature.com/articles/s41
Anonymous at Wed, 24 Jul 2024 16:24:37 UTC No. 16294869
>>16291889
Exam from structural geology was tough. But my first time doing geological documentation for tunel in fucking slate was much worse. I hate geological compass so much you wouldnt believe.
Anonymous at Wed, 24 Jul 2024 18:33:12 UTC No. 16295006
>>16294869
>Exam from structural geology was tough.
ya know, it's my favorite geology topic, but I had the worse professor ever. Absolute shit.
The book was good, but reading sucks, and in the end I was already exhausted from all else and didn't even get that much of a good grade. Bummer.
Anonymous at Wed, 24 Jul 2024 21:47:46 UTC No. 16295303
>>16295006
amazing conjugate en ecchelon veins there, just textbook perfection
here, have some foliation
Anonymous at Wed, 24 Jul 2024 21:50:16 UTC No. 16295304
>>16294384
No, the moon doesn't cause plate tectonics
Anonymous at Thu, 25 Jul 2024 00:52:54 UTC No. 16295447
Is there any known or theoretical link between geomagnetic reversal and volcanism. Someone do a pull. We've got a North Pole acting like Barbie on her 18th birthday, and vague doomposting about Yellowstone blowing up. If any "serious" scientist has ever connected the dots, I'd like to know.
t. every other board thats faster but dumber
Anonymous at Thu, 25 Jul 2024 01:32:25 UTC No. 16295483
>>16295304
>No, the moon doesn't cause plate tectonics
Yes, Moon drives plate tectonics. Of course there are other factors contributing, but the driving force is the Moon's gravitation pull on the Earth as the force of the gravitational pull changes across the surface and subsurface. As distance to the Moon increases the pull gravitational force is reduced and the frequency of the drag around the earth is also reduced, plate tectonics is slowing down.
Anonymous at Thu, 25 Jul 2024 07:06:19 UTC No. 16295735
>>16294384
>>16295304
>>16295483
The moon's gravity, though it doesn't "drive" plate tectonics, but it certainly influences it over the eons:
It affects earth's tectonic plates mainly through its influence on tides. The moon's gravitational pull also causes slight deformations in the earth's solid crust, known as tidal flexing. This constant flexing increases the stress on the tectonic plates, which can influence the timing and intensity of seismic events, like earthquakes.
Addittionally, the friction from this tidal flexing generates a small amount of heat, known as tidal heating. This heat, though minimal compared to other sources, adds to the thermal energy within the Earth's mantle. Over long periods, this extra heat can influence mantle convection. Thus, the moon's gravity plays a subtle but essenttial role in the dynamics of earth's geology.
the Moon, fucking stakler.
Anonymous at Thu, 25 Jul 2024 10:31:03 UTC No. 16295863
>>16295303
bro you sound so cringe. You never even been in the field.
Anonymous at Thu, 25 Jul 2024 10:37:48 UTC No. 16295874
>>16292502
why are structural nerds so cringe?
Anonymous at Thu, 25 Jul 2024 17:52:08 UTC No. 16296241
>>16295303
>foliation
nice
Anonymous at Thu, 25 Jul 2024 21:36:00 UTC No. 16296508
>>16291889
I want to build a very big tunnel, 10000s of km long and a diameter of at least 4 meters and it should be as cheap as possible. Which kind of tunneling machine is the best for this and in which rock formation its the easiest to achieve that?
Anonymous at Fri, 26 Jul 2024 01:02:43 UTC No. 16296742
>>16291889
guys how do i find cool rocks / formations IRL? I've got a motorcycle and want an excuse to use it. Southwestern Western Australia.
Anonymous at Fri, 26 Jul 2024 06:25:29 UTC No. 16296995
>>16296742
>guys how do i find cool rocks / formations IRL?
Look into geo guides to see what type of stuff is near you, and geologic/topo maps if you want to explore a bit more on your own.
The problem is that the really niche stuff like some of the photos shared here will not be in mainstream guides, For that you're going to have to talk to a geologist who know the cool shit near where you live.
Anonymous at Fri, 26 Jul 2024 06:36:59 UTC No. 16297002
>>16296742
Easy place anywhere is just follow a highway through hilly/mountainous terrain where they had to blast to construct it. Usually cuts through some cool geology and is publicly accessible without too much steep terrain.
Anonymous at Fri, 26 Jul 2024 21:39:56 UTC No. 16297932
>>16296995
Metamorphic rocks are a better bet for structural geology stuff since. Look for gneisses, schists, and slates, for example.
Also look for large faults on a map and go to places where the faults cut through steep topography, the rocks tend to be more exposed / eroded there and the rocks should be deformed and jointed. Look for fault and / fold clusters as well.
Anonymous at Fri, 26 Jul 2024 23:53:21 UTC No. 16298107
>>16295735
Plate tectonics is one of the dumbest theories people believe lol.
>yes we are floating on a magical bed of magma and the continents slowly move over..uhhhh millions of years yes!
>can I have real scientific proof of this with predictive capabilities?
>lol no, just believe what the text book says!
lol lmao
Anonymous at Sat, 27 Jul 2024 04:53:21 UTC No. 16298457
Couldn't make it as an engineer, huh?
Anonymous at Sat, 27 Jul 2024 04:55:09 UTC No. 16298462
>>16298454
lots of hot spots missing there.
better map
Anonymous at Sat, 27 Jul 2024 09:28:17 UTC No. 16298687
>>16291889
>geology
how do you all reconcile the steamy pile of shit your study has produced known as the fossil fuel industry?
Is a requirement to become a geologist being able to bend over and take it up the ass while staring at a rock?
Just how much of a cuck do you have to be?
Anonymous at Sat, 27 Jul 2024 16:33:07 UTC No. 16299100
Anyone else excited about the apparent oncoming magnetic reversal?
I have to admit, I'm quite giddy, as dangerous as it may be, my curiousty is winning.
Anonymous at Sun, 28 Jul 2024 00:41:06 UTC No. 16299746
>>16296508
>Which kind of tunneling machine
email Elon's Boring Company for a price quote. They should get back to you right away. Oh, and tell them you want a low ball offer because money is tight.
Anonymous at Sun, 28 Jul 2024 23:41:04 UTC No. 16301111
>>16291889
The surface of the earth was created by the deluge.
Anonymous at Mon, 29 Jul 2024 00:41:09 UTC No. 16301189
>>16291889
Is it possible that there are extraordinarily rich reserves of, say, platinum group metals in places 5 to 10 km underground?
Anonymous at Mon, 29 Jul 2024 00:52:56 UTC No. 16301205
>>16299994
I always thought Florida was just like Morocco.
Anonymous at Mon, 29 Jul 2024 08:24:06 UTC No. 16301529
>>16301189
Possibly, yes. Let's look into that soon. I don't have time right now.
Cult of Passion at Mon, 29 Jul 2024 09:38:23 UTC No. 16301582
>>16291889
We need to get Big Paleo out of our field, it corrupting the good diggers.
Cult of Passion at Mon, 29 Jul 2024 09:40:23 UTC No. 16301585
>>16293133
No *i* am the interesting on thats my spot!
Anonymous at Mon, 29 Jul 2024 09:40:41 UTC No. 16301587
>>16301189
>>16301529
me again.
Yes, it is possible that there are extraordinarily rich reserves of platinum group metals at depths of 5 to 10 km underground. Think about the volume of rock you're talking about: a spherical shell, 5 km in thickness, with an inner radius of about 6360 km. That's about 2,543,521,900 cubic kilometers of rock.
The formation of those metals is often associated with specific geological processes, such as magmatic and hydrothermal activities, which can occur at such depths, so yes, in that vast volume, there are many such spots.
Cult of Passion at Mon, 29 Jul 2024 09:41:27 UTC No. 16301588
>>16293133
Who do you think you are?!
Cult of Passion at Mon, 29 Jul 2024 09:43:40 UTC No. 16301590
>>16293133
No I Am!
Cult of Passion at Mon, 29 Jul 2024 09:45:45 UTC No. 16301593
>>16293133
Took this myself, dont steal it thats illegal.
Cult of Passion at Mon, 29 Jul 2024 09:47:19 UTC No. 16301594
>>16293133
You brought this on yourself.
Cult of Passion at Mon, 29 Jul 2024 09:48:21 UTC No. 16301596
>>16293133
Just accept defeat while youre still alive!
Cult of Passion at Mon, 29 Jul 2024 09:49:23 UTC No. 16301597
>>16293133
Can we just talk about this?
Cult of Passion at Mon, 29 Jul 2024 09:59:41 UTC No. 16301603
>>16293133
You drive a hard bargain.
Cult of Passion at Mon, 29 Jul 2024 10:00:46 UTC No. 16301604
>>16293133
Alright, you need to cool it.
Cult of Passion at Mon, 29 Jul 2024 10:01:49 UTC No. 16301607
>>16293133
Thats enough, youre hurting me!
Cult of Passion at Mon, 29 Jul 2024 10:02:52 UTC No. 16301608
>>16293133
Why are you killing me, please, someone call the police!
Anonymous at Mon, 29 Jul 2024 10:14:53 UTC No. 16301613
>>16301585
fukken nice!
>>16301588
>>16301590
>>16301593
>>16301594
>>16301596
>>16301597
>>16301603
>>16301604
>>16301607
>>16301608
awesome shots, thanks
Anonymous at Mon, 29 Jul 2024 17:37:04 UTC No. 16302063
>>16301587
interesting. thanks
Anonymous at Tue, 30 Jul 2024 03:04:34 UTC No. 16302767
>>16301593
I knew pumice was lighter than water but lighter than air is somethin' else.
Anonymous at Tue, 30 Jul 2024 06:40:14 UTC No. 16302893
>>16301593
reminds me of the mushroom islands of Palau
Cult of Passion at Tue, 30 Jul 2024 07:06:34 UTC No. 16302911
Anonymous at Tue, 30 Jul 2024 14:39:22 UTC No. 16303309
>>16302911
yep, Madagascar, everyone knows that
Anonymous at Tue, 30 Jul 2024 20:13:43 UTC No. 16303634
>>16301604
>>16301607
interesting, where is it?
Cult of Passion at Tue, 30 Jul 2024 21:46:18 UTC No. 16303745
>>16303634
Garden of the Gods, Colorado Springs, CO.
Anonymous at Tue, 30 Jul 2024 21:55:25 UTC No. 16303759
>>16291889
Can an anon help me ID these black minerals I’ve come across?
They’re relatively sharp, seem to resist erosion compared to the limestone I’ve found them in, and some have an almost glassy quality to them when split open with a chisel.
I don’t want to assume it’s obsidian, because it’s hat seems like too “easy” of an answer. Maybe it’s pitchrock or tachylite?
These were found in Bermuda btw. Even though it’s situated on a volcanic seamount, it’s long been dead so I doubt these are a direct result of an eruption or anything.
Anonymous at Tue, 30 Jul 2024 21:57:11 UTC No. 16303765
>>16303759
Here’s another few photos. The brownish host rock is actually iron rich Paleosol, but the actual host rock is limestone.
Anonymous at Tue, 30 Jul 2024 21:59:19 UTC No. 16303768
>>16303765
Some slightly duller examples.
They all seem to have the same glassy type of quality inside. Sharp when broken, some maybe it “is” volcanic glass, because I don’t know if any minerals found in limestone that do this otherwise.
Anonymous at Wed, 31 Jul 2024 03:00:48 UTC No. 16304123
>>16291889
Maybe also merge with palaeontology general? Perhaps make the topic broader to include fossils once the current general is archived
Cult of Passion at Wed, 31 Jul 2024 03:20:53 UTC No. 16304145
>>16301582
>>16304123
Begone, Satan!
Rock is Pure. Rock is Life.
Geological dating at Wed, 31 Jul 2024 03:32:31 UTC No. 16304160
Mwahaha
Anonymous at Wed, 31 Jul 2024 07:24:39 UTC No. 16304376
>>16303759
No cleavage anywhere, amorphous and aphanitic, looks like wet basalt. I'd have to strike it with a rock hammer to expose a fresh surface for something more, sorry.
>>16303765
that one looks like dry seaweed, lol
>>16303768
same, looks like basalt or even darkened limestone. I'd hit it with acid to see if it efervesces.
Anonymous at Thu, 1 Aug 2024 06:36:29 UTC No. 16305581
>>16305573
sack of my balls
Anonymous at Thu, 1 Aug 2024 23:02:07 UTC No. 16306312
>>16305581
cocks
Anonymous at Fri, 2 Aug 2024 00:56:01 UTC No. 16306430
>>16291889
Started a new geotech job last week after the company I worked for for 2 years is letting people go. All I've done is engineering work, testing concrete, asphalt and fill dirt density. I told my family at least the fill dirt I get to touch rocks and dirt but this is not a geotech job. New boss admitted that they hired me in order to train a new department in geotech which they haven't done in 8 years but they don't have any work yet.
Meanwhile, this is exactly why I left my last job, there is very little geotech work for small companies right now because interest rates are so high so smaller companies aren't building and larger companies don't hire outside geotech, they do all their own work in house.
I dunno man. I gave up another opportunity testing water for environmental for this. Wish me luck!
Anonymous at Fri, 2 Aug 2024 03:18:12 UTC No. 16306496
>>16306430
More power to you anon. I'm some IT monkey who's on the outside looking in. Geo has the right mix of beauty and science.
Anonymous at Fri, 2 Aug 2024 14:44:26 UTC No. 16307095
I went on an 11km hike today, parts of it through an area that saw a lot of artisinal goldmining during the 19th century. Found a shit ton of nice muscovite specimens, some nice quartz, some tiny garnets, tourmaline, and the big boy in pic related.
Anonymous at Fri, 2 Aug 2024 15:14:28 UTC No. 16307126
>>16298107
Indeed.
Anonymous at Sat, 3 Aug 2024 15:49:15 UTC No. 16308582
Is the west coast of the US more geologically "interesting" than the east coast? Whenever I see anything about geology, it's usually the Southwest.
Anonymous at Sat, 3 Aug 2024 16:42:17 UTC No. 16308634
>New incompletely rifted microcontinent identified between Greenland and Canada
https://phys.org/news/2024-07-incom
https://www.sciencedirect.com/scien
Anonymous at Sun, 4 Aug 2024 06:12:08 UTC No. 16309490
>>16308727
>https://phys.org/news/2024-07-clim
>rotation pole shifting over time in milliarcseconds/year
interesting