Posted on 11/14/2006 4:07:33 AM PST by Pharmboy
Cool beans ping! Take a look at this!
bump
I recognize Chicxulub and Vredevoort, but what's that in Austrailia???
As an aside, I wonder what the "scientific community" bases their "no impacts within the last 10,000 years" on???
Thanks for the ping. I have read about symptoms of a major impact off the southeast coast of Australia in historic time.
I've thought that ever since Chicxulub was confirmed at the K-T boundary and when Shoemaker-Levy 9 smashed into Jupiter.
I was thinking Gosses Bluff, but a Web site says that original crater would be 22km in diameter, so that's (ahem) not big enough.
Earth Impact Database -- Australia
Looks like this must be the Acraman structure -- 590 mya, estimated 90 km diameter crater.
Google Earth -- Night Sky Observer
"Acraman, South Australia, Australia - The existence of this impact structure was deduced from the discovery of its ejecta layer within late Precambrian shales of the 590-million-year-old Bunyeroo Formation in the Adelaide geosyncline, South Australia. This layer contains abundant shocked quartz grains and small shatter cones. The ejecta were found in outcrops and drill cores over several hundred kilometers. These outcrops led scientists to the Acraman structure in South Australia, which was shortly thereafter confirmed as an impact structure, and as the source crater of the Bunyeroo impact ejecta layer. The diameter of the Acraman structure is at least 90 kilometers, with some outer arcuate features at 150 kilometers diameter. Impact ejecta have been found at distances of up to 450 kilometers from the Acraman structure. Wow! The center of the structure is occupied by the 20-kilometer-diameter, hexagonal Lake Acraman, a dry salt lake (white feature slightly left of the center). It is not quite clear if the semicircular Lake Gairdner and Lake Everard, which can be seen in the upper part of the image, are part of the impact structure or not. If they are, Acraman would have a diameter of about 160 kilometers." (The link to Acraman doesn't work here; use the Earth Impact Database map.)
Let me know if you find something about it. I'll let you know if I do.
KEWL! Thanks for the link!
No where near the size of the Madagascar markings, but both run from NW to SE. To me they are evidence of a Tsunami possibly created from the subduction zone off of Washington or maybe an alaskan earthquake.
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
Dang, I was at Guadalupe Dunes three weeks ago. Would gone to the visitors center to look it up had I known. Thanks.
Thank you!!! Now I just need a trip.
:-)
Sincerely, Thanks!
"Circle over Idaho and Montana coincides with Yellowstone."
I don't think so. Yellowstone is the result of a super eruption above a major magma hot spot. I erupts approximately every 600,000 years for at least three cycles. And it has now been slightly more than 600,000 years. Scientists are watching carefully for trouble.
Ongoing research places the Holocene Working Group under the watchful eyes of scientists as they attempt to prove their large-scale meteor collision theories.
extraordinary claims require extraordinary proof...luckily, that sentence from Sagan is the only extraordinary claim that exists.
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