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re: Continental drift, Pangea, and the Cambrian explosion
Posted on 5/13/18 at 11:04 am to white perch
Posted on 5/13/18 at 11:04 am to white perch
pangea was the best.
flights would have been so much cheaper had pangea just kept.
flights would have been so much cheaper had pangea just kept.
This post was edited on 5/13/18 at 11:10 am
1
Posted on 5/13/18 at 11:16 am to white perch
quote:
question is, what was going on with the continents prior to the Cambrian explosion?
Garden if eden, baw. That’s when god planted all them dinosaur bones to test your faith and set off a volcanoe to separate into continents.
Posted on 5/13/18 at 11:55 am to white perch
quote:
For the majority of the earths existence, what were the continental plates doing?
In the beginning, the materials that coalesced to form the earth were a mixture of elements and compounds of varying weights and densities. Over time the heavier elements such as iron moved to the earth's center and the lighter ones began to form the crust.
As the lighter matter gathered at the surface, it formed continents that float, if you will, on the denser materials below. This process of separation of the elements is still taking place, although to a much less extent than in the earth's youth. Subduction of the tectonic plates still promotes this separation but, for all intents and purposes, it's done and the continents will not get any larger than they are now.
How the continents formed.
Posted on 5/13/18 at 12:02 pm to white perch
Africa and South America met at sonic and the rest is history
Posted on 5/13/18 at 12:11 pm to white perch
It's science.
Posted on 5/13/18 at 12:18 pm to white perch
quote:lots and lots of foreplay
what was going on with the continents prior to the Cambrian explosion?
Posted on 5/13/18 at 1:02 pm to Kentucker
quote:
Subduction of the tectonic plates still promotes this separation but, for all intents and purposes, it's done and the continents will not get any larger than they are now.
I was with you until here...
This post was edited on 5/13/18 at 1:03 pm
Posted on 5/13/18 at 1:10 pm to white perch
Wrong, God made the earth
Posted on 5/13/18 at 1:12 pm to jimbeam
Posted on 5/13/18 at 4:10 pm to white perch
quote:
all continents were connected at one time in a mass called Pangea
Please provide the scientific fact that ALL continents were connected. As far as I understand, this concept is still a theory.
Posted on 5/13/18 at 4:16 pm to djmicrobe
You also don’t know what theory means in science.
Posted on 5/13/18 at 4:24 pm to sgallo3
quote:solid lil dicky reference
sgallo3
Posted on 5/13/18 at 4:25 pm to djmicrobe
quote:
Please provide the scientific fact that ALL continents were connected. As far as I understand, this concept is still a theory.
Let me guess, earth is only 5000 years old ?
Posted on 5/13/18 at 4:35 pm to NorthShoreTiger44
quote:
My main question is that it seems like a lot of that is speculation. What proof is there of all these earlier continents and how they started from the beginning?
Well, for starters, look at the shape of the continents when they form the supercontinent as opposed to them being disassembled the way they currently are. They fit together like puzzle pieces fairly well.
quote:(coined by famous geophysicist Alfred Wegener).
"Doesn't the east coast of South America fit exactly against the west coast of Africa, as if they had once been joined?" wrote Wegener to his future wife in December 1910. "This is an idea I'll have to pursue."
There's also evidence that suggests the same fossils were found off the coasts of South America & Africa, Antarctica & Australia, etc.; this backs up Wegener's theory of plate tectonics, with regards to how the continents were all assembled together at one point.
So no, it's not all "speculation". There is hard evidence on the matter.
quote:
Or is it just all theory and not proven
As someone alluded to earlier, you're misconstruing what a scientific theory from what an actual theory is.
This post was edited on 5/13/18 at 4:38 pm
Posted on 5/14/18 at 11:00 am to djmicrobe
quote:
this concept is still a theory.
It isn't just idle speculation, there's plenty of evidence beyond just the fact that the shapes roughly work out right.
There's also the fact that landforms mostly match up. The rocks on the eastern part of South America are similar to that on the west of Africa. The fossils are similar.
And we know that continental plates exist and they move around. When they do, we get earthquakes. This is observed fact, not "just a theory".
Since we know how the plates are moving, we can project back in time to figure out where they would have been at some time in the distant past. And what do you know ... they in fact *do* line up that way.
Posted on 5/14/18 at 11:08 am to djmicrobe
quote:
Please provide the scientific fact that ALL continents were connected. As far as I understand, this concept is still a theory.
Uh oh, we got a religious guy in a science thread
Posted on 5/14/18 at 11:08 am to white perch
Get it right baws.
It's Pangaea.
It's Pangaea.
Posted on 5/14/18 at 11:12 am to LSUgirl4
Posted on 5/14/18 at 11:25 am to soccerfüt
i don’t get it. tbagging? wrestling? 
Posted on 5/14/18 at 4:38 pm to LSUgirl4
It's a puzzle, you'll have to figure it out.
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