"Now for something totally different."
Sep. 24th, 2004 06:38 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
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kelloggs2066's post of two galactic clusters colliding and looking at a map of the southeastern U.S, and Mexico, I came up with a thought:
What if the coast of Texas and Louisiana was formed by a meteor collision? It is circular enough.
As of what I last heard, most geophysicists concur that the meteor impact, that wiped out the dinosaurs, formed the circular portion of the Yucatan peninsula.
So why couldn't there be a older impact crater that formed the Texan coast.
Here is what I came up with:
Green circle is that of the Yucatan impact (approximate location and size). Red is my hypothetical impact. Yellow is where the two impacts overlap. Blue is a possible impact site off of Florida/Georgia/South Carolina.
The last is unlikely due to no "shocked rocks" found in the region, that I know of, and the type of coastline. I believe that this was formed by natural erosion/current processes.
Now I realize that you could fit any size circle into any area, in fact I could put a circle into the Delaware Bay and make the same argument, but it is the size of the circle that makes my point. I also think Hudson Bay might be an impact crater given its size and shape, though I think someone already has suggested it.
So, you fellow LJ'ers with more of a background in Earth Science, what do you think? Is it possible, or am I totally off the mark?
Edit: A thought occured to me; why couldn't they be pieces of the same asteroid/comet/whatever that struck the Earth at the same time (Within days of each other. We're talking geologic time scales here)? Maybe the FL/GA/SC curve could be an impact site because of the break up. Interesting thought, no?
Also, I am well aware of the Contential Shelf that extends off of the coast of the eastern seaboard. The impact site for FL/GA/SC should actually be moved a few hundred miles off shore, but my image gives a better illustratiion I think.
kelloggs2066's post of two galactic clusters colliding and looking at a map of the southeastern U.S, and Mexico, I came up with a thought:What if the coast of Texas and Louisiana was formed by a meteor collision? It is circular enough.
As of what I last heard, most geophysicists concur that the meteor impact, that wiped out the dinosaurs, formed the circular portion of the Yucatan peninsula.
So why couldn't there be a older impact crater that formed the Texan coast.
Here is what I came up with:
Green circle is that of the Yucatan impact (approximate location and size). Red is my hypothetical impact. Yellow is where the two impacts overlap. Blue is a possible impact site off of Florida/Georgia/South Carolina.
The last is unlikely due to no "shocked rocks" found in the region, that I know of, and the type of coastline. I believe that this was formed by natural erosion/current processes.
Now I realize that you could fit any size circle into any area, in fact I could put a circle into the Delaware Bay and make the same argument, but it is the size of the circle that makes my point. I also think Hudson Bay might be an impact crater given its size and shape, though I think someone already has suggested it.
So, you fellow LJ'ers with more of a background in Earth Science, what do you think? Is it possible, or am I totally off the mark?
Edit: A thought occured to me; why couldn't they be pieces of the same asteroid/comet/whatever that struck the Earth at the same time (Within days of each other. We're talking geologic time scales here)? Maybe the FL/GA/SC curve could be an impact site because of the break up. Interesting thought, no?
Also, I am well aware of the Contential Shelf that extends off of the coast of the eastern seaboard. The impact site for FL/GA/SC should actually be moved a few hundred miles off shore, but my image gives a better illustratiion I think.
