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Blobrana


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Ancient Impact Craters
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Asteroid Impact Craters on Earth as Seen From Space
Asteroid impact craters are among the most interesting geological structures on any planet. Many other planets and moons in our solar system, including our own moon, are pock-marked with loads of craters. But because Earth has a protective atmosphere and is geologically active - with plate tectonics and volcanic eruptions, mostly relatively young oceanic crust, and harsh weathering from wind and water - impact structures dont last long and can be tough to come by.

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Blobrana


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RE: Ancient Impact
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Comet Killed Ice Age Beasts
Space rocks that slammed into the glaciers of eastern Canada some 12,900 years ago likely helped wipe out mega-animals like woolly mammoths and possibly the continent's first human inhabitants called the Clovis people, according to a new study that adds to evidence that a trio of factors were involved.
The new evidence comes from recently discovered nano-sized diamonds, which researchers say are the strongest clues to date for an argument that could explain the region's die-off during the late Pleistocene epoch.

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Blobrana


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According to the Vancouver Sun, scientists have discovered Nano-diamonds, a layer of microscopic diamonds at Santa Rosa Island in California, U.S.A. They claim these microscopic diamonds constitute the strongest evidence for a controversial theory explaining the extinction of Ice Age mammals. The theory proposes that a collision with a comet that around the area of northern Canada around thirteen thousand years ago started a period of cold atmosphere that lasted for a thousand years.

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Blobrana


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Stan Gaz is a photographer who has taken a series of pictures of impact structures.
Starting April 30 and running through June 6, his photos will be on exhibit in New York City.

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Blobrana


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A study of wildfires after the last ice age has cast doubt on the theory that a giant comet impact wiped out woolly mammoths and prehistoric humans.
Analysis of charcoal and pollen records from around 13,000 years ago showed no evidence of continental-scale fires the cometary impact theory suggests.

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Blobrana


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Scientists claim tiny diamonds found beneath the soil prove a fiery comet crashed to earth nearly 13,000 years ago and almost wiped out the earliest people to live in North America.
The cataclysm led to the extinction of dozens of mammal species and triggered a 1,300-year ice age that stretched around the world, according to a controversial report published yesterday.
The study says the prehistoric humans who inhabited North America at the time - hunters and gatherers known as the Clovis culture - almost vanished overnight in the aftermath.

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Blobrana


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Meteorite craters are a rare find on Earth, numbering only 175 at last count, but a Canadian researcher unveiled Tuesday a new computer tool for locating hundreds more from even the tiniest of clues.
According to observations of the Moon and Mars, a small meteorite is predicted to impact Earth every 10 years. Mars Orbiter Camera has shown, for example, that at least 20 such impacts formed on the red planet since 1999.
But of the 175 known craters on Earth, only five are less than 100 meters in diameter, and fewer than 10 are less than 10,000 years old.

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Blobrana


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University of Alberta researcher Chris Herd doesn't want people craning their necks, worrying about giant rocks falling from space.
But he's unleashed new technology that could prove meteorite impacts with Earth aren't as rare as we think.
Herd, an associate professor of earth and atmospheric science agrees that "yes," a giant meteorite, almost 10 kilometres wide, likely ended the age of the dinosaurs, but will it happen again?

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Blobrana


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Nach der 3. Large Meteorite Impact Conference in Nördlingen 2005 fand dieses Jahr im August die 4. Large Meteorite Impact Conference in Vredefort in Südafrika statt. Hier trafen sich über 100 Impaktkraterforscher zu einer Tagung, die sich thematisch hauptsächlich mit großen Einschlagskratern auf der Erde und auf anderen terrestrischen Planeten (zum Beispiel Mars) beschäftigte.

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Blobrana


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Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling

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