Microtektites from 66-mya K-T Mass Extinction For Sale

Microtektites from 66-mya K-T Mass Extinction
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Microtektites from 66-mya K-T Mass Extinction:
$14.25

Offered here are some of my last samples of the \"micro-tektites\" referred to below, ejected from the335-kilometer (200-mile) diameter Chicxulub crater. These were collected from K-T Boundary Clay exposed at Beloc, Haiti. Some of the larger spheres are just visible to your unaided eye (examine the first image above which shows an entire slide). Most of the pieces will be glass fragments. Each slide will certainly include several spheres and probably some fractured ones. There is a transparentcoverslipatop the plastic well slide to prevent the loose collection of tiny splash forms and spheres from spilling out. And, as you can see, these look great under a microscope under low magnification (two close-ups are shown). The slide is about 2.5 by 7.5–cm (one by three-inches). The enlarged circle of the slide well is about 1.2-cm (near 1/2-inch) in diameter.

The slide I will send will be similar to those shown, but, not exactly. I have a habit of slightly altering the text labels attached to the slides, so they may say something a little bit different than shown.

K-T Boundary micro-tektites such as these are seldom if ever offered on (except, I think when offered by me). The K-T micro-tektites I\'ve seen for sale online are usually invisible, well-hidden within lots of clay. This would be the perfect item for anyone REALLY interested in impact geology, astronomy, and mass extinctions.

Over the last four billion years, proto-planets, comets, large meteorites, and asteroids have struck Earth, occasionally leaving enormous impact craters, disrupting the environment, and, sometimes causing mass extinctions. The last big MAIN extinction occurred nearly 66-million years ago. A huge impactor struck the then-shallow ocean off of what is now the coast of Mexico\'s Yucatan Penninsula. Today, using gravitational data, one can trace the remains of the 335-kilometer (200-mile) diameter Chicxulub crater, extending out into the ocean floor and shown beneath a map of the Yucatan. The site matches the timing and geological evidence of a worldwide mass extinction that included the dinosaurs (except for birds) and 95% of other life forms.

In a University of Colorado news release dated May 26, 2004, we read, according to new research led by a University of Colorado at Boulder geophysicist, a giant asteroid that hit the coast of Mexico 65-million years ago probably incinerated all the large dinosaurs that were alive at the time in only a few hours; only those organisms sheltered in burrows or in water below the surface managed to survive.

The six-mile-in-diameter asteroid is thought to have hit with the energy of 100 million megatons of TNT, according to chief author andResearcher Doug Robertson of the department of geological sciences and the Cooperative Institute for Research in Environmental Sciences.

The \"heat pulse\" caused by re-entering ejected matter would have reached around the globe, igniting fires and burning up all terrestrial organisms.

A paper on the subject was published by Robertson in the May-June issue of the Bulletin of the Geological Society of America. Co-authors include CU-Boulder Professor Owen Toon, University of Wyoming Professors Malcolm McKenna and Jason Lillegraven and California Academy of Sciences Researcher Sylvia Hope.

\"The kinetic energy of the ejected matter would have dissipated as heat in the upper atmosphere during re-entry, enough heat to make the normally blue sky turn red-hot for hours,\" said Robertson. Scientists have speculated for more than a decade that the entire surface of the Earth below would have been baked by the equivalent of a global oven set on broil.

The evidence of terrestrial ruin is compelling, said Robertson, noting that tiny spheres of melted rock are found in the Cretaceous-Tertiary, or KT, boundary around the globe. The spheres in the clay are remnants of the rocky masses that were vaporized and ejected into sub-orbital trajectories by the impact.\"If there are other sales of mine you may have won, I can save you additional postage costs by combining everything into a single carton.


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