Other
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981sci...214..896k&link_type=abstract
Science, vol. 214, Nov. 20, 1981, p. 896-898.
Other
2
Asteroids, Geochronology, Meteorite Collisions, Meteoritic Damage, Geochemistry, Geology, Iridium, Paleontology, Impacts, Simulations, Experiments, Asteroids, Analogs, Comets, Iridium, Tektites, Dust, Atmosphere, Cretaceous-Tertiary Event, Hypotheses, Ages, Anomalies, Formation, Living Organisms, Chronology, Samples, Terrestrial, Earth
Scientific paper
Alterations in the estimated effects of a large body impacting the earth 65 million years ago are discussed with 0.5 micron particles calculated to have agglomerated and precipitated from the atmosphere within three to six months of impact. The fossil record is cited to show that mass plant and animal extinction did not proceed at a pace consistent with a three year darkness due to atmospheric particle suspension. Geochemical observations have revealed the presence of world-wide iridium anomalies, similar to those which would be left from a meteorite impact, in the Cretaceous-Tertiary boundary, but in no other sedimentary layer; it is noted that terrestrial iridium deposition mechanisms are not fully understood. Difficulties are expressed for determining the order of events that occurred at disparate sites of the globe at the same precise instant 65 million years ago.
No associations
LandOfFree
Impact looks real, the catastrophe smaller does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Impact looks real, the catastrophe smaller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact looks real, the catastrophe smaller will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-745042