Web Results

Alvarez hypothesis

en.wikipedia.org/wiki/Alvarez_hypothesis

The Alvarez hypothesis posits that the mass extinction of the dinosaurs and many other living ... The evidence for the Alvarez impact hypothesis is supported by chondritic meteorites and asteroids w...

Meteorite impact and the mass extinction of species at the ...

www.pnas.org/content/95/19/11028.full

Sep 15, 1998 ... Confirmation that a large meteorite impact in Mexico correlates with a ... Like all good hypotheses, the Alvarez impact hypothesis generated a ...

Evolution: Extinction: What Killed the Dinosaurs? - PBS

www.pbs.org/wgbh/evolution/extinction/dinosaurs/asteroid.html

Hypothesis: Asteroid Impact. Did a collision with a giant asteroid or comet change the shape of life on Earth forever? It is widely agreed that such an object -- 10 ...

Impact Theory

hoopermuseum.earthsci.carleton.ca/saleem/meteor.htm

THE ALVAREZ HYPOTHESIS. (Impact Theory). The general ... The Alvarez pinned the cause of the extinction on the meteorite impact. This theory came to be ...

Expanding Earth via Impact Hypothesis - the Great Western Vehicle

www.greatwesternvehicle.org/science/expandingearth.html

The Impact Hypothesis, as established by Shoemaker, Alvarez et al, is an impact ... Thus, the Earth is expanding by external accretion due to meteorites, comets ...

ALVAREZ ASTEROID IMPACT THEORY - Paleontology and ...

www.enchantedlearning.com/subjects/dinosaurs/glossary/Alvarez.shtml

This crater dates back to 65 million years ago, and is probably the site of the K-T meteorite impact. Evidence of K-T period tsunamis all around the Gulf of Mexico ...

The KT extinction - University of California Museum of Paleontology

www.ucmp.berkeley.edu/education/events/cowen1b.html

The most recent work on the K-T extinction has centered on two hypotheses that ... Well-known meteorite impact structures often have fragments of shocked ...

The Mesozoic extinction event - Australian Museum

australianmuseum.net.au/the-mesozoic-extinction-event

Oct 30, 2015 ... The 'catastrophists' believe the mass extinction happened suddenly due to a meteorite impact. The 'gradualists' consider it was prolonged and ...

Did a Comet Really Kill the Mammoths 12,900 Years Ago?

news.nationalgeographic.com/news/2013/09/130910-comet-impact-mammoths-climate-younger-dryas-quebec-science/

Sep 10, 2013 ... A proponent of the impact hypothesis, a geological consultant named ... Meteorite impacts can form spherules, but so do volcanoes, lightning, ...

The oblique impact hypothesis and relative probabilities of lunar and ...

adsabs.harvard.edu/full/1984LPSC...14..631N

This hypothesis is furtherevaluated in the context of the subsequent discovery of a lunar meteorite. The oblique impact hypothesis is consistent with observations  ...

More Info

Study: Single Meteorite Impact Killed Dinosaurs - Live Science

www.livescience.com

Nov 28, 2006 ... The dinosaur's extinction was triggered by a single large meteorite ... "The sample we found strongly support the single-impact hypothesis," ...

Alvarez Hypothesis - National Museum of Natural History - Dinosaurs

paleobiology.si.edu

... Alvarez Hypothesis: Origin and Evidence | Effects of the Asteroid Impact | Other ... Although iridium is rare in the crust, it is abundant in many meteorites and ...

The Younger Dryas Impact Hypothesis - Scientific American Blog ...

blogs.scientificamerican.com

Jul 27, 2011 ... Based on this discovery Firestone later developed as alternative explanation the meteorite hypothesis, according to him the hypothesis could ...