A black and white earth.
6268 cr points
Send Message: Send PM GB Post
26 / M / The Netherlands
Offline
Posted 9/4/10 , edited 9/5/10
You might be thinking this will be a thread about racism or anything like that, sorry it's not, it's gonna be a geography topic :D.

Some time ago I wonderd, how did the world look like when it finally got a crust of rock as it is today.
Even tho I now have the awnser I felt like it totally deserved a topic, as I like to make it clear for myself once again and I also like to show it to others (even tho most of you probably know it already).

Anyway allow me to being

First I Will start with the beginning and making of Earth and therefore also the rest of our solar system.
As many of you know stars are formed out of gigantic clouds of gas (called Nebula's) that are in the Universe.
All the small gas particles have a very very very tiny force of gravity, so all the gas particles pull each other, at a very slow rate gast particles gather in a area (or areas) and over time form a more dense part of the gas cloud.
When millions/billions of years have passed the area now is filled with a massive amount of gas, and it's gravitational pull is just as huge, thanks to it's huge gravitational pull the gas particles inside deal with a insane amount of pressure.
Because the particles are being pulled towards each other more and more particles collide with each other, creating warmth.
And as pressure builds up and up over millions of years something happens or it does not happen, but when it happens it will go like this:.
Thanks to the enormous pressure the atoms are fused, it's nuclear fusion that takes place because the particles are pressed against each other with tremendous power.
As we all know nuclear fusion gives birth to allot of energy, and as this happens our star is born, more and more particles are fused and more and more energy is created, and the star begins to shine and starts to become super duper hot.

When light gas particles are fused together, they become more heavy particles, for example when Hydrogenium (H) is fused together with another (H) they become Helium. (this is not entirely correct but I want to keep this at a low level since I'm not particularly good with Chemistry).
This fusing of particles continues and continues, even Helium particles are fused together etc etc, and every time those new particles are fused they become more heavy.

When a star has lost most of it's fusing power it starts to ''die'', and not every star ''dies'' in the same way, some small stars just keep burning until they only have very very heavy particles left, and some enormous stars (much much bigger then our sun) just end with a huge explosion (Nova/Super Nova), these are both very complicated ways and so I wont be explaining them, hope you don't mind .

What happens is that these heavy particles also are influenced by gravity, when another star stars to light up it will also attract heavy particles that float in the Nebula.
The heavy particles now float around the beginning star, in a so called protoplanetary state, because of the the gravitational pull the all the particles turn around the point of gravity, just like our planet turns around the sun as we speak.

Because of the rotation around the star heavy materials are being ''pushed'' to the outer rings while lighter material gathers at the middle. (ever swung around a bucket with water, you should kinda know what I'm talking about )

Because of all the colliding and the gathering of particles a new star starts to light up, but this time the heavy particles are still rotating around the new born star.
Now planets are starting to form, heavy particles collide with each other, sticking to each other, becoming warmer etc etc, when allot of heavy particles combined collide with other Particles masses they become even larger and warmer.
This continues for a long while and then we have a huge and hot planet, because of all the collisions the surface of this new (and rock) planet glows from it's own warmth, at this point the entire planets is molten, there are no oceans no atmosphere and no land.

Let's give it another couple of million years and this planet starts to cool off, a thin layer of crust if formed.
After the lava-ish state of earth, finally you can find solid rock in the form of Basalt, and Granite.

Why is this a black and white earth? Since that was the headline I tried to lure you in with I shall now give you the awnser
Basalt is a volcanic rock, with most of the time a Dark/Black colour, it has a density (remember this~!) of 2.9 g/cm^3.
Basalt is what most of our Oceanic plates is made out off. (don't worry I shall explain this too :D)
And the other type of stone that sort of is the other half of our crust is:
Granite, it's formed from molten rock and has a density of 2.7/2.8 g/cm^3, it most of the time has a light/white colour.

Now Imagine seeing our new-born world from space, not a blue/green planet with white clouds on it, it's just a black and white planet with almost no dynamics, except for that which is underground

Well this is the end of what I'm typing now :p I really hope you enjoyed reading this and feel free to correct me in any way, since I probably made mistakes.
And most of all, thank you for reading.

PS, If people don't mind I would like to continue posting more geological explanations here, since I really enjoy it and I'm also really happy with the positive feed back, thank you very much
1288 cr points
Send Message: Send PM GB Post
A small place in...
Offline
Posted 9/4/10
Thank you I really enjoy reading this especially your explanation on why it will look black and white. Although this is more geography than history but thanks.

Posted 9/4/10
The moon is similar to this in many ways, and I can see it with an atmosphere like what there is on Earth, which would change its appearance dramatically. It would be amazing to look up there with a telescope and see wilderness and cities spread across the lunar surface.
18663 cr points
Send Message: Send PM GB Post
36 / M / Small Wooded town...
Offline
Posted 9/5/10
So we are talking about old earth, before earth crashed into another planet creating the moon and new earth.

6268 cr points
Send Message: Send PM GB Post
26 / M / The Netherlands
Offline
Posted 9/5/10

Darkphoenix3450 wrote:

So we are talking about old earth, before earth crashed into another planet creating the moon and new earth.



Hmmmm I'm not sure if Earth crashed into a other planet, or a giant meteor, but yes something probably hit the earth and created the moon (this is a simplistic explanation ofcourse).
But at this moment yes I am talking about a earth that just cooled down.

I would like to hear more about the creation of the moon to be honest
18663 cr points
Send Message: Send PM GB Post
36 / M / Small Wooded town...
Offline
Posted 9/5/10 , edited 9/5/10

amersfoort wrote:


Darkphoenix3450 wrote:

So we are talking about old earth, before earth crashed into another planet creating the moon and new earth.



Hmmmm I'm not sure if Earth crashed into a other planet, or a giant meteor, but yes something probably hit the earth and created the moon (this is a simplistic explanation ofcourse).
But at this moment yes I am talking about a earth that just cooled down.

I would like to hear more about the creation of the moon to be honest



I happen to know of a video that shows computer generated images how it happen and presents the evidence of it.

Hmm I look for it, I think I have a friend that posted it some place as well.

I am fixing supper right now, but after my meal.. I will do a search for it.
6268 cr points
Send Message: Send PM GB Post
26 / M / The Netherlands
Offline
Posted 9/5/10

Darkphoenix3450 wrote:


amersfoort wrote:


Darkphoenix3450 wrote:

So we are talking about old earth, before earth crashed into another planet creating the moon and new earth.



Hmmmm I'm not sure if Earth crashed into a other planet, or a giant meteor, but yes something probably hit the earth and created the moon (this is a simplistic explanation ofcourse).
But at this moment yes I am talking about a earth that just cooled down.

I would like to hear more about the creation of the moon to be honest



I happen to know of a video that shows computer generated images how it happen and presents the evidence of it.

Hmm I look for it, I think I have a friend that posted it some place as well.

I am fixing supper right now, but after my meal.. I will do a search for it.


Ahh that would be much appriciated, I hope this will give me more insight on the influence that the moon has on the Earth.
Thank you very much for your co-operation

18663 cr points
Send Message: Send PM GB Post
36 / M / Small Wooded town...
Offline
Posted 9/5/10

amersfoort wrote:


Darkphoenix3450 wrote:


amersfoort wrote:


Darkphoenix3450 wrote:

So we are talking about old earth, before earth crashed into another planet creating the moon and new earth.



Hmmmm I'm not sure if Earth crashed into a other planet, or a giant meteor, but yes something probably hit the earth and created the moon (this is a simplistic explanation ofcourse).
But at this moment yes I am talking about a earth that just cooled down.

I would like to hear more about the creation of the moon to be honest



I happen to know of a video that shows computer generated images how it happen and presents the evidence of it.

Hmm I look for it, I think I have a friend that posted it some place as well.

I am fixing supper right now, but after my meal.. I will do a search for it.


Ahh that would be much appriciated, I hope this will give me more insight on the influence that the moon has on the Earth.
Thank you very much for your co-operation



This one is not the best video I have seen for it.. But it does give the information and give you visuals.
http://www.youtube.com/watch?v=m8P5ujNwEwM

6268 cr points
Send Message: Send PM GB Post
26 / M / The Netherlands
Offline
Posted 9/6/10
Thank you very much for that very informative video, it was of great help

Such an impact must have plunged back the earths cooling down for years and years, such a amazing universe we have.
6268 cr points
Send Message: Send PM GB Post
26 / M / The Netherlands
Offline
Posted 9/6/10
And now I shall continue with another explanation on how our magnificent and complicated Earth works. (Since I do not see the need to bother the other CR community people with another topic on geology)

This time I shall sort of explain the basics of our earths Dynamic systems.

Most school books always start by stating the following thing:
Have you ever looked at a world map? When you put some continents together they seem to fit in eachother suprisingly well don't they?

http://www.mapsharing.org/MS-maps/map-pages-worldmap/images-map/2-world-map-physical.jpg

Well..... heck yes they do.
Now a other reason why I put a link up to this particular map is this:
On this map we are able to see hights, not only the continental mountains, but also the different hights in our oceans, this all is of vital importance if one wats to understand how our earth works. (is ofcourse what I personally believe)

Mountains, whenether they are on the continents or underseas have been created, they have not always been there, even thoo everytime you look at them they do not seem to change, please bear in mind that geological changes are extremely slow, most changes take millions of years.

The next map I will be showing you is a map of the Atlantic ocean, the ocean that lies between the American continent and the Euroasian/African continent.
http://www.cliffshade.com/colorado/images/mid_atlantic.gif

Notice how in the middle of the ocean a mountain range lies, How was this all created? Well for that awnser we have to dig deeper, no really we have to go very very deep into earth to get our awnser.

http://shop.pitsco.com/sharedimages/content/Large/L_EarthLayers.jpg
This is how scientists currently think our earth looks like if we would cut our earh in half. (Lets not do that)
Now what we see is that our Earth is very very hot on the inside, it's so hot that alot of material inside the earth is liquid, in other words molten rock.
This is all partially true, some layers inside the earth are molten rock, while other layers are not.
But even the molten layers are very thick and should not be compared to other fast moving liquids such as water. (please keep this in mind)

Now what we can see is that the core of our earth is very hot, while the layers closer to the crust of the earth are less hot.
A warm material tends to have a lesser density then the same but colder material, this is because warmth is movement of atoms/moleculs, this can be seen through the different stages a liquid has: a solid stage, in this stage the atoms amost do not move, they are all stuck and close together, the density of solid objects is most of the time higher then the same material but in the form of liquid or gas.
When a solid object melts it becomes a liquid, most liquids are very move-able, infact they always seem to flow downhill, this is because the space between the atoms of the material is much larger, the atoms have much more ''freedom of movement''.
And ofcourse when you make this liquid even warmer it will eventually evaporate, it becomes a gas with a very very low density, the space between the atoms of the material is now very far and the atoms can move around with easy.

A gas is lighter then liquid of the same material, thats why a gas is in the atmosphere and most liquids can be found on the earths crust or beneath it.

In other words when you warm something up it will become lighter, and what happens with lighter things? well they float.
You can test this by warming a bowl of water, the bottom of the bowl is being heated by the flames, thus the bottom of the bowl gets warm and the water that connects with the bottom will als incease in temprature. The warmer/lighter water now goes to the surface and cools off, while the cool/heavy water of the surface sinks down, where it becomes warmer and you will have a circle.
This event is called convection, and if you did not understand my chaotic rambling perhaps this picture will make it more clearer for you:
http://studycasts.wikispaces.com/file/view/convection.jpg/136365463/convection.jpg

The same thing happens under our feet, warmer molten rocks will float towards the earths surface and cooler molten rocks will sink to the core of the earth, there it will be warmed and then we have a circle, another image to make things clearer
http://bowfell.geol.ucl.ac.uk/~lidunka/GlobalGeophysics/Geophysics8%20-%20Thermal%20evolution/Heat_files/image055.gif

Now I start to realize how much I explained, yet I'm not even on half of what I wanted to tell, this shows how enormous our earth is.

Back to the atlantic ridge, what does that thing has to do with convection?
Well basically, the atlantic ridge is where the warm magma reaches the earths crust to cool down and form new oceanfloor.
http://www.iainwebber.com/media/illustration-jpegs/Ocean-Floor-1.jpg
like volcanoes magma/lava rises up to the surface of the earth just to cool down and form new rock, the same happens to the atlantic ridge, you can see it like a gigant vulcano if you will.

Because of the new creation of oceanic floor the older floor of the ocean moves (very very very very very very very slowly) away from the ridge.

Since oceans cannot grow continuasly without the earth getting bigger there must also be places where the oceanic crust gets destroyed, well lucky for this theory there are such places, and perhaps if you payed alot of attention to the images you might already have seen them.

In my first post I talked about how Basalt (oceanic floor) is heavier/has a higher density then Granite (continental crust).
Because of this when a oceanic plate and a continental place crush into each-other the heavier plate gets pushed under the lighter plate (unlike with wrestling).

This is called subduction.
http://www.knmi.nl/cms/mmbase/images/68089/5_subduction_zones600x376.jpg

Well since I am getting tired of explaining this will be the finl lesson of today.
Again I really hope you enjoyed reading this and yes this one did not have a satisfying end as my first post, but I believe this was equally educational.

I'd like to thank google, the earth and my loyal 4 readers
You must be logged in to post.