TIL: Today I Learned

[Lexicus]

Black sand is typically from lava (as opposed to rock).

It's typically made of basalt, which is rock that forms when lava solidifies

 

[Birdjaguar]

It's typically made of basalt, which is rock that forms when lava solidifies

"When lava contacts water, it cools rapidly and shatters into sand and fragmented debris of various size. Much of the debris is small enough to be considered sand. A large lava flow entering an ocean may produce enough basalt fragments to build a new black sand beach almost overnight. The famous "black sand" beaches of Hawaii, such as Punaluʻu Beach and Kehena Beach, were created virtually instantaneously by the violent interaction between hot lava and sea water.[2] Since a black sand beach is made by a lava flow in a one time event, they tend to be rather short lived since sands do not get replenished if currents or storms wash sand into deeper water. For this reason, the state of Hawaii has made it illegal to remove black sand from its beaches. Further, a black sand beach is vulnerable to being inundated by future lava flows, as was the case for Hawaiʻi's Kaimū, usually known simply as Black Sand Beach, and Kalapana beaches.[3] An even shorter-lived black sand beach was Kamoamoa.[4] Unlike with white and green sand beaches, walking barefoot on black sand can result in burns, as the black sand absorbs a greater fraction of the solar radiation falling upon it.[5][not in citation given][6]"

 

[Takhisis]

It's typically made of basalt, which is rock that forms when lava solidifies

So, tl; dr there's RL unmodded places where the floor is lava?

 

[Birdjaguar]

So, tl; dr there's RL unmodded places where the floor is lava?

Mid Atlantic ridge???
The question is: when does lava become basalt? There are lots of lava fields in NM and Hawaii. In NM we also have many places where there are deep layers of basalt rock, that is not considered lava.

 

[Cutlass]

So, tl; dr there's RL unmodded places where the floor is lava?

There aren't actually all that many places that it's not... All rock was lava at one point in its existence.

 

[Traitorfish]

I see somebody's either a fan of armeniapedia or an inhabitant of the former Soviet Empire.
‘Q: Could Socialism be instituted in Switzerland? Y: Yes, of course, but what have the Swiss done to you?’

They increased the space between the triangles on toblerone. Instant gulag.

 

[Takhisis]

They increased the space between the triangles on toblerone.

The criminals.

 

[Timsup2nothin]

Mid Atlantic ridge???
The question is: when does lava become basalt? There are lots of lava fields in NM and Hawaii. In NM we also have many places where there are deep layers of basalt rock, that is not considered lava.

I propose some scale involving how fast your shoes melt.

 

[Lexicus]

All rock was lava at one point in its existence.

Not entirely true. Some rock is non-rock stuff that is turned into rock by very high pressure and temperature inside the earth's crust.

 

[Birdjaguar]

I propose some scale involving how fast your shoes melt.

Well, that would make most of it basalt. This link shows images of NM's lava fields and, for me, shoe melt is not a good measure.

NM lava fields

Some of the pics are clearly show what is basalt rock. Some of the others are just hardened lava.

 

[Cutlass]

Not entirely true. Some rock is non-rock stuff that is turned into rock by very high pressure and temperature inside the earth's crust.

That's just more steps between the lava and the current product.

1. Lava
2. Erosion
   
3. Sedimentary accumulation
4. Compression into a solid
5. Metamorphic compression

 

[Traitorfish]

The criminals.

an exact quote, no doubt.

 

[Timsup2nothin]

That's just more steps between the lava and the current product.

1. Lava
2. Erosion
   
3. Sedimentary accumulation
4. Compression into a solid
5. Metamorphic compression

Some of the sedimentary accumulation comes from shell, or other biomass. Coal is a rock.

 

[Cutlass]

Some of the sedimentary accumulation comes from shell, or other biomass. Coal is a rock.

That's just a few more steps in the process.

 

[Timsup2nothin]

Well, that would make most of it basalt. This link shows images of NM's lava fields and, for me, shoe melt is not a good measure.

NM lava fields

Some of the pics are clearly show what is basalt rock. Some of the others are just hardened lava.

Well, "lava field" is more appealing to tourists than "basalt fields," but isn't that "hardened lava" basalt, from a chemistry and crystal structure standpoint? Now, if you walked on it and it melted your shoes, and when you looked in those big cracks there was still red hot rock down in there, maybe the whole thing should still be called lava, even though it is crusted over.

 

[Takhisis]

I propose some scale involving how fast your shoes melt.

In Iceland they run over/across lava fields to help cool it.

an exact quote, no doubt.

This is almost as traumatising as that time I got a job.

 

[Hrothbern]

TIL that there are black leopards

Black caused by melanism opposite to albinism. It is not a different species.

The last picture taken was from 1909 and here the recent one:

https://nos.nl/artikel/2271778-afri...et-eerst-in-meer-dan-eeuw-gefotografeerd.html

 

[Arakhor]

Well, yes. They're the Old World equivalent of panthers.

 

[Traitorfish]

TIL that Eastern Orthodox churches use actual bread as communion bread, instead of weird dessicated wafers.

 

[Chukchi Husky]

They increased the space between the triangles on toblerone. Instant gulag.

That's why Poundland decided to make their own copy of Toblerone.