APOD: Earths Richat Structure (2013 May 19)

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Expand view Topic review: APOD: Earths Richat Structure (2013 May 19)

Re: APOD: Earths Richat Structure (2013 May 19)

by owlice » Tue Jun 04, 2013 11:16 pm

Donald Pelletier wrote:In fact, this structure is an ancien volcano. If you understand french, check this Radio Canada emission : http://www.youtube.com/watch?v=pTTnYRaZ55A
From the APOD text: "The possibility that the Richat Structure was formed by a volcanic eruption also seems improbable because of the lack of a dome of igneous or volcanic rock."

Re: APOD: Earths Richat Structure (2013 May 19)

by Donald Pelletier » Tue Jun 04, 2013 8:03 pm

In fact, this structure is an ancien volcano. If you understand french, check this Radio Canada emission : http://www.youtube.com/watch?v=pTTnYRaZ55A

Re: APOD: Earths Richat Structure (2013 May 19)

by irenebaron » Fri May 24, 2013 6:09 pm

Re: APOD: Earths Richat Structure (2013 May 19)

by Chris Peterson » Tue May 21, 2013 1:54 pm

ericeveryman wrote:Conjecture: the result of coincident phenomena. One possible combination of factors would be a volcano with its magma chamber under the surface, hit by a meteoroid.
There is no need for a meteoroid to explain this. Any explanation involving an impact would require that we find shocked quartz and other materials, which are not present. The structure is purely tectonic, regardless of the precise details of its formation.

Re: APOD: Earths Richat Structure (2013 May 19)

by ericeveryman » Tue May 21, 2013 1:36 pm

Conjecture: the result of coincident phenomena. One possible combination of factors would be a volcano with its magma chamber under the surface, hit by a meteoroid.

Re: APOD: Earths Richat Structure (2013 May 19)

by neufer » Mon May 20, 2013 10:08 pm

ta152h0 wrote:
there is another structure that looks out of place as if deposited there and it is Haystack Rock, Cannon Beach, Oregon state.

:arrow: The aliens haven't left that one yet :!:
http://en.wikipedia.org/wiki/Haystack_Rock wrote:
<<Haystack Rock is a 72-meter sea stack in Cannon Beach, Oregon. A popular tourist destination, the monolithic rock is adjacent to the beach and accessible by foot at low tide. The Haystack Rock tide pools are home to many intertidal animals, including starfish, sea anemone, crabs, chitons, limpets, and sea slugs. The rock is also a nesting site for many sea birds, including terns and puffins.>>
http://en.wikipedia.org/wiki/Horned_Puffin wrote:
<<The Horned Puffin (Fratercula corniculata) is an auk, similar in appearance to the Atlantic Puffin; this bird's bill is yellow at the base and red at the tip. It is a pelagic seabird that feeds primarily by diving for fish. It nests in colonies, often with other auks. The yellow bill plate grows before the breeding season and is shed later. They have a small fleshy black "horn" above their eyes. They have a white face with a dark line extending from the back of the eye and red feet.

This species breeds on rocky islands off the coasts of Siberia, Alaska and British Columbia, in burrows, in rocky cavities or among rocks. It winters far out to sea. Feeding areas are usually located fairly far offshore from the nest. There is usually one chick and both parents feed the young. Horned Puffins will return from hunting with several small fish in their beaks. They also eat squid and crustaceans.>>

Re: APOD: Earths Richat Structure (2013 May 19)

by ta152h0 » Mon May 20, 2013 6:40 pm

there is another structure that looks out of place as if deposited there and it is Haystack Rock, Cannon Beach, Oregon state.

Re: APOD: Earths Richat Structure (2013 May 19)

by neufer » Mon May 20, 2013 6:20 pm

ta152h0 wrote:
Still Sunday, right ?
http://asterisk.apod.com/viewtopic.php? ... 97#p134897
ta152h0 wrote:
I am thinking now, the Sugar Loaf at Rio de Janeiro could be one of these " presents "
http://apod.nasa.gov/apod/ap110420.html
http://apod.nasa.gov/apod/ap090509.html

Re: APOD: Earths Richat Structure (2013 May 19)

by ta152h0 » Mon May 20, 2013 5:21 pm

Still Sunday, right ? I am thinking now, the Sugar Loaf at Rio de Janeiro could be one of these " presents "

Re: APOD: Earths Richat Structure (2013 May 19)

by neufer » Mon May 20, 2013 5:17 pm

Click to play embedded YouTube video.
emc wrote:
I wouldn’t put it past some advanced galaxy trekking space aliens to have marked the planet with a “this is where we dumped our problematic DNA experimental upright bipedal life forms series revision H, so steer clear of this planet” sign.

(I’ve always felt a little alien... maybe it's the horse talking)

Re: APOD: Earths Richat Structure (2013 May 19)

by emc » Mon May 20, 2013 4:23 pm

I wouldn’t put it past some advanced galaxy trekking space aliens to have marked the planet with a “this is where we dumped our problematic DNA experimental upright bipedal life forms series revision H, so steer clear of this planet” sign.

(I’ve always felt a little alien... maybe it's the horse talking)

Re: APOD: Earths Richat Structure (2013 May 19)

by ta152h0 » Mon May 20, 2013 3:55 pm

has to be more than just one, right ?

Re: APOD: Earths Richat Structure (2013 May 19)

by &&&&&&& » Mon May 20, 2013 3:54 pm

ta152h0 wrote:looks like, from the commentary, the APOD moderators have taken this Sunday off and all the kids are here playing in the sandbox of your mind. Long live the imagination
Good thing Einstein doesn't get bounced for his imagination. Albert said, "Imagination is more important than knowledge."

Re: APOD: Earths Richat Structure (2013 May 19)

by &&&&&& » Mon May 20, 2013 3:51 pm

Gas bubble. Same thing that made many of the moon's 'impact crater.' Many such bubble sites are found on the bottom of the North Sea.

Re: APOD: Earths Richat Structure (2013 May 19)

by owlice » Mon May 20, 2013 12:46 am

All of the moderators (except RJN) have been on the board today.

Re: APOD: Earths Richat Structure (2013 May 19)

by ta152h0 » Mon May 20, 2013 12:03 am

looks like, from the commentary, the APOD moderators have taken this Sunday off and all the kids are here playing in the sandbox of your mind. Long live the imagination

Re: APOD: Earths Richat Structure (2013 May 19)

by Guest » Sun May 19, 2013 11:53 pm

It's clearly a flying saucer landing site.

So Long, and Thanks for All the Fish.

by neufer » Sun May 19, 2013 7:34 pm

fastartcee wrote:
Image
Come on, AstroBuffs ...it's obviously a bull's-eye target built by Klingons. They (ugly, but very advanced) accomplished this by burying a powerful anti-gravity device at a depth of 90 +/- 3 kilometres, knowing that in a few million Earth years natural erosive processes would slowly create the desired structure. Nothing to worry about here, unless they commence testing their new hyperphoton-torpedo guidance system for accuracy.

PS. I wouldn't buy any recreation property within 500 km of the centre of the Richat structure; that would put you within three sigma of the expected torpedo impact point. (Yep, even from 700 light years the Klingon military-industrial complex is that good!)
http://www.digitaljournal.com/article/350414 wrote:
Image
Navy dolphins find 19th century Howell torpedo off Calif. coast
By JohnThomas Didymus, May 19, 2013

<<A US Navy dolphin has discovered a 19th century torpedo in deep water off the coast of San Diego, California, during an underwater mine detection training exercise. The 11-foot brass torpedo known as the Howell was built and deployed about 130 years ago. The find is of great significance to military historians because it was one of the first self-propelled torpedoes ever built.

The US military has trained dolphins for underwater operations at the Point Loma facility since the 1960s. Dolphins have a sophisticated bisonar system that engineers still do not fully understand. 80 dolphins and 40 sea lions are being trained for mine detection, mine clearing and swimmer protection. The animals are trained to dive and locate objects with the shapes of known mines. When the dolphin finds an object that could be a mine it surfaces and touches the front of the boat with its snout, but if it finds nothing it touches the back. A trained dolphin called Ten surfaced unexpectedly and touched the front of the boat. Mike Rothe, who heads the marine mammal program, said: "It went positive in a place we didn't expect." Another dolphin named Spetz also gave a positive signal a week later. Spetz was ordered to take a marker to the object it discovered. Navy divers located the object and found it was an old inert torpedo broken in two pieces with "USN No.24" stamped on one of the pieces. Harris said: "It was apparent in the first 15 minutes that this was something that was significant and really old. Realizing that we were the first people to touch it or be around it in over 125 years was really exciting."

According to the Los Angeles Times, the torpedo was made of brass and designed to be launched from above water or underwater in torpedo tubes. It was 11 feet long and driven by a 132-pound flywheel that was spun to 10,000 rpm before it was launched. It had a range of 400 yards and a speed of 25 knots and a warhead filled with 100 pounds of gun cotton. Only 50 were made between 1870 and 1889 by a Rhode Island company, before another company began producing more advanced models. It was used by the US Navy until it was replaced by the Whitehead in 1898. Until the the bottlenose dolphins found the torpedo, only one specimen was known to exist and it was on display at the Naval Undersea Museum in Keyport, Washington. Duryee said: "There were only 50 Howell torpedoes made, and we discovered one of the two ever found." The US Navy deployed the Howell torpedo between 1870 and 1889. DVIDS reports that the torpedo, developed by Lt. Cmdr. John A. Howell, between 1870 and 1889, was the first capable of following a track without leaving a wake as it homes in on a target. The torpedoes were considered important breakthrough in military technology at the time. Harris, said: “It was the first torpedo that could be released into the ocean and follow a track. Considering that it was made before electricity was provided to U.S. households, it was pretty sophisticated for its time.">>

Re: APOD: Earths Richat Structure (2013 May 19)

by fastartcee » Sun May 19, 2013 6:25 pm

Come on, AstroBuffs ...it's obviously a bull's-eye target built by Klingons. They (ugly, but very advanced) accomplished this by burying a powerful anti-gravity device at a depth of 90 +/- 3 kilometres, knowing that in a few million Earth years natural erosive processes would slowly create the desired structure.

Nothing to worry about here, unless they commence testing their new hyperphoton-torpedo guidance system for accuracy.

Why Earth? ...Seems they're still pissed off with Kirk.

PS. I wouldn't buy any recreation property within 500 km of the centre of the Richat structure; that would put you within three sigma of the expected torpedo impact point. (Yep, even from 700 light years the Klingon military-industrial complex is that good!)

Re: APOD: Earths Richat Structure (2013 May 19)

by neufer » Sun May 19, 2013 4:46 pm



Psnarf wrote:
Might be the site of the Slate Rock and Gravel Company
where Fred Fintstone operated a bronto-crane.
https://en.wikipedia.org/wiki/Apatosaurus wrote:
<<Apatosaurus, also known as the Brontosaurus, is a genus of sauropod dinosaur that lived from about 154 to 150 million years ago, during the Jurassic Period.>>
nigel wrote:
It is misleading for APOD to discount the presence of volcanic rocks. This would firmly date the [Richat Structure] at around 100 million years old.
Mr. Slate: Fred's hot tempered boss at the stone quarry. Though he is friends with Fred and Barney, he is often not impressed with Fred's antics at the quarry, and has fired him on many occasions, only to give him his job back at the end.

A running gag is Mr. Slate's ever-changing first name, which has been presented as Sylvester, Nate, Oscar and George.

Re: APOD: Earths Richat Structure (2013 May 19)

by neufer » Sun May 19, 2013 4:36 pm

Lordcat Darkstar wrote:
It is a very cool structure. Sadly all I have is boring old clay where I live.
http://asterisk.apod.com/viewtopic.php? ... ay#p199471

Re: APOD: Earths Richat Structure (2013 May 19)

by Lordcat Darkstar » Sun May 19, 2013 4:33 pm

I can explain it in one word... ALIENS!!! :shock: Just kidding :lol2: It is a very cool structure. Sadly all I have is boring old clay where I live. All of the interesting rocks and dead dinos are about 20 feet down. :? I do have lots of coal under my place though, so if Texas ever gets cold ill be fine. :mrgreen:

Re: APOD: Earths Richat Structure (2013 May 19)

by ta152h0 » Sun May 19, 2013 4:10 pm

I like that..Fred Flinstone

Re: APOD: Earths Richat Structure (2013 May 19)

by Psnarf » Sun May 19, 2013 4:03 pm

:wink: Looks like each of the open-pit copper/gold mines in Arizona. Might be the site of the Slate Rock and Gravel Company where Fred Fintstone operated a bronto-crane.

Re: APOD: Earths Richat Structure (2013 May 19)

by nigel » Sun May 19, 2013 3:51 pm

It is misleading for APOD to discount the presence of volcanic rocks. The Wikipedia page explains them well. There are both extrusive and intrusive volcanic rocks, and they have a pretty clear geometric relationship to the structure. There must be a larger parent intrusion below that was responsible for the uplift. No other explanation seems possible. This would firmly date the structure at around 100 million years old (the dates on the volcanic rocks range from 104 to 99 m.y.).

I wouldn't say that the structure is all that mysterious. Spectacular, yes, mysterious, no.

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