Scientists have digitally scanned the picture to make a 3D-printed model of a portion showing a hopping animal’s tracks into a cave. (Credit: Mindy Weisberger)
SAN FRANCISCO — the Rocks, which seem to propel itself into the landscapes of the desert have long mystified and intrigued scholars. Now, researchers have found tracks of this so-called ” sailing stones, dating back approximately 200 million years, is a rocky island long, measured for each of the five early footprints of him has been preserved.
The 11-meter-tall (3-meter) stone slab of dinosaur prints have been discovered more than a century ago, and while there are a number of brands, in addition to the fax, had not been investigated. Some of the brands with a series of grooves has been seen that the stone, once “sailed” across the surface of the stone, most likely backed up by a smooth layer of ice, and microbial slime, according to Paul Olsen, a paleontologist at the Lamont-Doherty Earth Observatory of Columbia University, in New York City.
The other evidence in the stone, and hinted that the game, and the sails, and the stones were not the only ones to leave their marks; pair of small depressions suggests that it is a small, hopping mammal, also scampered to the surface, Olsen said in a Dec. 9, here at the annual meeting of the American Geophysical Union (AGU).
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The dinosaur tracks are on the album, was one of Anchisaurus, a prosauropod dinosaur (an early ancestor of a large whole that was created during the late Jurassic period. Scientists don’t know what kind of animal produced it, the origin of the tracks, but it can be confined in a house, Olsen said.
Sailing stones, are a well-known on the Racetrack Playa in California’s Death Valley, where there is a large number of stones have scrapped a long trail behind them, as though they were being dragged across the dry bed of the lake. The long-standing mystery of how the sailing stones move, it was fixed in 2014, when scientists reported that the coating from the surface of the water, on the rocks, is formed of the thin ice that is turned to wind the movement of the stones in the bed of the lake, the creation of grooves of the tracks.
The old stone was dug up from a quarry in Portland, Conn., and about 200 million years ago, in that region of the world, it was humid, and tropical. However, it could have passed as a temporary cooling period of time after the explosive volcanic eruptions that have spewed out a mass of sulfur in the atmosphere, which is an integral part will be explained. If the grooves in the rock were made through an ice-coated sail rock, which is a very strong piece of evidence for an ancient, tropical freeze, ” he said.
However, there is something else that could have made the rock slick enough to be sailing in the microbial mats. A slimy coating from the microbial goo have created a sailing stone in Spain, and a similar microbial coatings may also be subject to the stone, which has run the 100-million a year ago, Olsen said.
As for the album was to be seen in the World since it opened its doors in 1896, first at Wesleyan University and then at the Dinosaur State Park, and the newly-identified animal tracks, and others of the “hidden in plain sight for more than 123 years,” Olsen said at the AGU meeting.
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Originally published on Live Science.