In eastern Montana, the K/T boundary is also defined as the base of the Z coal layer. The other three-quarters fell into six inappropriate groupings …’The 26 million year cycle of impact craters is very likely an example of the reinforcement syndrome, in which an hypothesis tends to be supported by further research, when the support really is not there.Naturally, such a mystery as dinosaur extinction has spawned a wide range of theories, ranging from the plausible to the entertaining.“Pleistocene phenomena have produced an absolute riot of theories ranging ‘from the remotely possible to the mutually contradictory and the palpably inadequate.’”Some dinosaur extinction theories postulate that dinosaurs died from the cold, while others suggest the beasts died from the heat, or else it was too hot in the summer and too cold in the winter.
However, others have suggested oxygen decreased due to a decrease in plankton.A past popular favourite was that little mammals, waiting for ‘the great die-off ’ in order to evolve, advanced dinosaur extinction by eating dinosaur eggs. Supernovas are a natural phenomenon that occurs in space with some regularity for it lies in the natural cycle of a star's life. supernova. Alternately, the dinosaurs could also have been entombed in giant mass flows. iridium spike in the Gubbio deposits. This strong bent was mostly due to the uniformitarian assumption of historical geology:The meteorite hypothesis severely challenged the uniformitarian assumption.Thus the meteorite theory was quickly supported and built up by the scientific press, especially by the journals So, before 1980 scientific bias was against the meteorite theory, but afterwards it was against all other theories. measurements. Since the tracks were made on hundreds to thousands of metres of Flood sediments, the evidence, as with bone-beds, indicates briefly exposed sediments or shallow water during the period of rising Flood waters.The hypothesis of exposed Flood sediments during the early stages of the Flood is further supported by dinosaur bone-beds and tracks. explanation has never been proposed for such wide extinctions. down on the earth each year," says Alvarez, "it occurred to me One theory hypothesises that the climate became too wet, while another that the climate dried out to kill off the dinosaurs. clay layer. The story revolves around a piece of pink and white limestone in whose agree with known properties of the solar system and with documented Theory links ancient extinction to supernova Stellar explosion may have triggered gamma-ray blast and ice age Below: x Jump to discuss comments below ; discuss However, many unknowns still surround this fascinating evidence of The volcanic and meteorite theories for dinosaur extinction have both supportive and contrary data. This won't destroy the earth but it will kill just about every living thing that isn't buried hiding in a hole for years. “We think there is very good circumstantial evidence for a gamma ray burst.”Melott said a gamma ray burst would explain both phenomena.He said a gamma ray beam striking the Earth would break up molecules in the stratosphere, causing the formation of nitrous oxide and other chemicals that would destroy the ozone layer and shroud the planet in a brown smog.“The sky would get brown, but there would be intense ultraviolet radiation from the sun striking the surface.” he said. The new discovery of polar dinosaurs is a problem for the meteorite theory, but can be explained within the Flood paradigm.All the hypotheses of dinosaur extinction assume that many dinosaurs, ammonites and other groups of organisms died out near the Cretaceous-Tertiary boundary. of about eighty million years, should still be in the clay layer, if the dinosaurs suggest a catastrophic death and burial. system," says Alvarez, "we will spend the next few months trying The ones in the ‘nest’ were disarticulated and jumbled together, a rather unusual condition for babies that supposedly died in a ‘nest’. So we believe the extraterrestrial hypothesis is more . not show any significant decrease in the sedimentation rate during that Much of the detailed information has not been published.
A Supernova is a Star that explodes and sends a shockwave of the amount of energy of radiation that the Sun creates at an estimate of about 20 billion years. fantastically small theoretical probability, it appears the supernova just That such great beasts once roamed the earth is hard to imagine. The tracks are generally of two types and are found on multiple stratigraphic levels that supposedly span several million years. Favorite Answer. “It could happen tomorrow or it could be millions of years.”Supernovae, the source of gamma rays, usually leave behind remnant clouds of dust, shock waves and black holes that can be detected for millions of years. 1 Answer. that by measuring the abundance of iridium in the sedimentary deposits, we Extinctions have also occurred in all other periods of geological time. source of the iridium had been a supernova.Asaro and Michel brought ideal credentials to this assignment, since