1993 NY Times newspaper with NEW THEORY on the EXTINCTION of DINOSAURS on EARTH

Description: 1993 NY Times newspaper with a NEW THEORY on the event that led to the EXTINCTION of DINOSAURS on the EARTH 1993 NY Times newspaper with a NEW THEORY on the event that led to the EXTINCTION of DINOSAURS on the EARTH - inv # 1S-405 Please visit our EBAY STORE for THOUSANDS MORE HISTORICAL NEWSPAPERS for SALE or at auction SEE PHOTO(s) - COMPLETE ORIGINAL NEWSPAPER, the NY Times dated Sept 17, 1993. This original newspaper contains a front page heading and long report (with a map) detailing that the EXTINCTION of DINOSAURS on EARTH resulted from a massive cosmic collision of a space object with Earth 65 million years ago (forming the CHICXULUB CRATER in the Yucatan , MEXICO). The Chicxulub crater is an impact crater buried underneath the Yucatán Peninsula in Mexico. Its center is offshore near the communities of Chicxulub Puerto and Chicxulub Pueblo, after which the crater is named. It was formed when a large asteroid, about 6.2 miles in diameter, struck the Earth. The date of the impact coincides precisely with the Cretaceous–Paleogene boundary (commonly known as the "K–Pg boundary"), slightly more than 66 million years ago, and a widely accepted theory is that worldwide climate disruption from the event was the cause of the Cretaceous–Paleogene extinction event, a mass extinction in which 75% of plant and animal species on Earth became extinct, including all non-avian dinosaurs. The Cretaceous–Paleogene (K–Pg) extinction event (also known as the Cretaceous–Tertiary (K–T) extinction)[b] was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. With the exception of some ectothermic species such as sea turtles and crocodilians, no tetrapods weighing more than 55 pounds survived. It marked the end of the Cretaceous period, and with it the Mesozoic Era, while heralding the beginning of the Cenozoic Era, which continues to this day. In the geologic record, the K–Pg event is marked by a thin layer of sediment called the K–Pg boundary, which can be found throughout the world in marine and terrestrial rocks. The boundary clay shows unusually high levels of the metal iridium, which is more common in asteroids than in the Earth's crust. As originally proposed in 1980 by a team of scientists led by Luis Alvarez and his son Walter, it is now generally thought that the K–Pg extinction was caused by the impact of a massive comet or asteroid 6 to 9 mi wide, 66 million years ago, which devastated the global environment, mainly through a lingering impact winter which halted photosynthesis in plants and plankton. The impact hypothesis, also known as the Alvarez hypothesis, was bolstered by the discovery of the 112 mi Chicxulub crater in the Gulf of Mexico's Yucatán Peninsula in the early 1990s, which provided conclusive evidence that the K–Pg boundary clay represented debris from an asteroid impact. The fact that the extinctions occurred simultaneously provides strong evidence that they were caused by the asteroid. A 2016 drilling project into the Chicxulub peak ring confirmed that the peak ring comprised granite ejected within minutes from deep in the earth, but contained hardly any gypsum, the usual sulfate-containing sea floor rock in the region: the gypsum would have vaporized and dispersed as an aerosol into the atmosphere, causing longer-term effects on the climate and food chain. In October 2019, researchers reported that the event rapidly acidified the oceans, producing ecological collapse and, in this way as well, produced long-lasting effects on the climate, and accordingly was a key reason for the mass extinction at the end of the Cretaceous. In January 2020, scientists reported that climate-modeling of the extinction event favors the asteroid impact and not volcanism. Very good condition. This listing includes the complete entire original newspaper, NOT just a clipping or a page of it. STEPHEN A. GOLDMAN HISTORICAL NEWSPAPERS stands behind all of the items that we sell with a no questions asked, money back guarantee. Every item we sell is an original newspaper printed on the date indicated at the beginning of its description. U.S. buyers pay priority mail postage which includes waterproof plastic and a heavy cardboard flat to protect the purchased item from damage in the mail. Upon request by the buyer, we can ship by USPS Media Mail to reduce postage cost; however, please be aware that USPS Media Mail can be very slow in its time of transit to the buyer. International postage is quoted when we are informed as to where the package is to be sent. We do combine postage (to reduce postage costs) for multiple purchases sent in the same package. We list thousands of rare newspapers with dates from 1570 through 2004 on Ebay each week. This is truly SIX CENTURIES OF HISTORY that YOU CAN OWN! Stephen A. Goldman Historical Newspapers has been in the business of buying and selling historical newspapers for over 50 years. Dr. Goldman is a consultant to the Freedom Forum Newseum and a member of the American Antiquarian Society. You can buy with confidence from us, knowing that we stand behind all of our historical items with a 100% money back guarantee. Let our 50+ years of experience work for YOU ! We have hundreds of thousands of historical newspapers (and their very early precursors) for sale. Stephen A. Goldman Historical Newspapers has been in the business of buying and selling historical newspapers for over 50 years. We are located in the charming Maryland Eastern Shore town of OXFORD, Maryland. Dr. Goldman is a consultant to the Freedom Forum Newseum and a member of the American Antiquarian Society. You can buy with confidence from us, knowing that we stand behind all of our historical items with a 100% money back guarantee. Let our 50+ years of experience work for YOU ! We have hundreds of thousands of historical newspapers (and their very early precursors) for sale. We invite customer requests for historical newspapers that are not yet located in our extensive Ebay listing of items. With an inventory of nearly a million historical newspapers (and their early precursors) we are likely have just the one YOU are searching for. WE ARE ALSO ACTIVE BUYERS OF HISTORICAL NEWSPAPERS, including large and small personal collections, bound volumes, significant individual issues, or deaccessions from libraries and historical societies. IF YOU WANT TO SELL, WE WANT TO BUY !!! Powered by SixBit's eCommerce Solution

Price: 20 USD

Location: Oxford, Maryland

End Time: 2025-01-13T19:33:15.000Z

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