A piece of the dinosaur killer found?

Article Abstract:

Geochemist Frank Kyte discovered a chip of rock that he believes may be a piece of an asteroid that collided with the Earth 65 million years ago, ending the dinosaur age by causing their extinction. The 3-millimeter chip was found in sediments at the bottom of the North Pacific.

Discovery and exploration, Asteroids, Dinosaurs, Kyte, Frank

---

A shocking view of the Permo-Triassic

Article Abstract:

Analysis of microscopic quartz grains has provided the first physical evidence that the impact of a comet or asteroid caused the mass extinction at the Permo-Triassic boundary. The grains have faint facture bands that may have been caused by the shock of a massive impact.

Paleontology, Quartz

---

Second crater points to killer comets

Article Abstract:

Argon-argon dating reveals that the Chicxulub crater in Yucatan and the Manson crater in Iowa were formed at the same time. The discovery supports the theory that multiple comet impacts caused the extinction of the dinosaur.

Usage, Radioactive dating, Radiometric dating, Cratering

Similar abstracts:

• Abstracts: A glimpse of supersolid. A hint of axions. Three-star performance
• Abstracts: New clue to cancer metastasis found. Cellular changes on the route to metastasis. New clue to prostate cancer spread: discovery of gene that appears to suppress prostate cancer metastasis may aid both the understanding and the treatment of this dangerous cancer
• Abstracts: The discreet disappearance of the bourgeoisie. Doubling up on payoffs for schooling. Overcoming the short-term syndrome
• Abstracts: Biodegradation of styrene in samples of natural environments. Effect of aging of chemicals in soil on their biodegradability and extractability
• Abstracts: The effect of stress-state on the large strain inelastic deformation behavior of 304L stainless steel. A creep-fatigue-oxidation microcrack propagation model for thermomechanical fatigue

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.