richat structure/eye of Sahara

[ghi]

  I read about this today,  first i was thinking it's some  photoshop talent, but it's on the google earth/map  also. What happened there?,;maybe it's something buried deep there....kligonian ship?

[Chalenge]

I have always thought it looked like an object that hit at just the right time while a heated section of the earth was cooling but of course I have never read anything more than snippets about the area. It would be interesting to know about the time it was formed thats for sure.

[Chalenge]

This one appears to be much older (not as pretty for sure) and much more remote:

Lat:  19° 4'33.84"N   Long:  19°16'21.76"E

[allaire]

Probably impact craters as most science folks believe.  The eye of Sahara is in Mauritania just NE of Ouadane.  The one that Chalenge listed is in Chad N of Faya-Largeau and SE of L'oasis de Gouro.

[SFRT - Frenchy]

I'll think it's more like those geyser formations u find in Yellowstone. A giant one that got smaller and smaller till it filled itself shut with sediments.

[VonMessa]

I'll think it's more like those geyser formations u find in Yellowstone. A giant one that got smaller and smaller till it filled itself shut with sediments.

Yellowstone is pretty much a gigantic caldera as this seems to have been, perhaps.

[Masherbrum]

It's an Anticline (Dome) that has eroded, exposing all of the previous layers of rock.   

[VonMessa]

It's an Anticline (Dome) that has eroded, exposing all of the previous layers of rock.   

I see oh wise green thing riding, banana....           

[Chalenge]

It's an Anticline (Dome) that has eroded, exposing all of the previous layers of rock.   

That would make sense if it were elongate but its not and neither is the one I pointed out.

[ghi]

Whatever was: volcano,meteor,geyser,...   was  Big!: what a violent history has this planet! but  scientists tell us we can kill it with some plastic bags.

[Chalenge]

Ghi.... those are not scientists. 

[ghi]

...tax collectors . I've seen in last few weeks already urea pumps/Add Blue installed in fueling stations, ready to be used from January 2010.

[Masherbrum]

That would make sense if it were elongate but its not and neither is the one I pointed out.

So you've taken Historical Geology, Stratification, or even Structural Geology?  It IS an eroded anticline/dome.   Not every anticline is "elongated", there is always an exception to any given definition and the Richat Structure is either thought to be a heavily eroded Anticline (Dome).   Even if you think it "isn't an Anticline".   Do you realize how much sand has hit this entire formation since it was formed?  The number has to be close to infinite and sand will wear rocks faster than water.   An "elongated formation" in a desert environment can easily be manipulated to a circular shape, let alone the anticline being erased, leaving what caused the anticline in the first place.   This is what you are looking at in the pictures.  

But it isn't an antiform, which looking at Lake Superior, contains the largest Antiform in the World.   What?   Yeah, look at the Keewanaw Peninsula and the exact same structure is Isle Royale National Park.   They are identical in structure, composition and are from the same formation of rocks.  

Ghi asked a specific question and I provided the answer to his Query.   You can choose to go on about anything you wish in this thread related to Structural Geology, without hijacking.   Since you're being flippant in your response, here you go.

Anticline:  A structure that plunges in all directions to form a circular or elongate structure.    This is the definition given to me by a PhD in Geology from Idaho State University (Top Geological School in the World) from my Structural Geology course I took at Adrian College.  

[Reschke]

  I read about this today,  first i was thinking it's some  photoshop talent, but it's on the google earth/map  also. What happened there?,;maybe it's something buried deep there....kligonian ship?

(Image removed from quote.)


(Image removed from quote.)

It is an ancient alien landing ship from the time when they first deposited the various soups around the planet to form life as we know it. Notice the smaller similarly shaped area in the first photograph. That has to be from a booster engine in either the bow or stern of the vessel which brought our chemical ancestors to this world.

[Chalenge]

So you've taken Historical Geology, Stratification, or even Structural Geology? ... 

Hasnt everyone? You are aware of the work of Hurley on anticline erosion patterns and his dispute of anticline erosions EVER being circular? The elongate types I have no  problem with and probably would never had disputed this one if not for Hurley.

Thanks for rekindling those memories.