He says an asteroid about the size of Mount Everest came in at 20 kilometers a second, that's more than 44,000 miles an hour, and hit the earth near the Yucatan Peninsula at the Southern tip of what is now called North America. Victoria Wicks: DePalma's name is listed first on the research article published in April last year, and he has been the primary spokesman on the story covered internationally since then. Robert DePalma: We know there would have been a tremendous air blast from the impact and probably a loud roaring noise accompanied with that similar to standing next to a 747 jet on the runway. Victoria Wicks: Robert DePalma describes the meteoric cataclysm on the day the dinosaurs died. The result of her research is the subject of this segment of SDPB's In the Moment. She wondered why, and what might be uncovered in a pipeline trench through Western South Dakota. But preservation of fossils was rarely addressed. She has frequently heard witnesses argue for protection of human history and assets: the burial grounds, cultural and religious sites, mineral estates, and water resources. Victoria Wicks has listened to years of testimony before licensing boards, legislative committees, and state and federal courts. Construction in Nebraska will come later. After years of permit battles, TransCanada has now broken ground at the U.S.-Canada border and at worker camps in South Dakota and Montana.
It's also where the Keystone XL pipeline is partially routed. From left, Terry Wentz, Peter Larson, Susan Hendrickson, and Neal Larson.Courtesy of Peter Larson Rex "Sue." The pelvis is visible on the far left with the articulated tail emerging from it and flowing across the bottom of photo. It's in this same formation, southeast of Tanis, that the T. The Tanis site is found in the Hell Creek Formation, one of the richest deposits of fossils in the world. Researchers have attributed this snapshot of mass death to the Chicxulub asteroid that ended the Cretaceous period in a heartbeat. Here is a link to the audioinstead.Ī research article published in April 2019 has created seismic waves in the study of paleontology.Īt a dig in southwestern North Dakota known as the Tanis site, paleontologists found evidence of an inland surge of water that encased animals and plants in mud minutes to hours after an impact. Your browser does not support HTML5 audio.
0 kommentar(er)
