A Tale of Two Rocks

Smithsonian Institution

This Smithsonian Magazine site provides an introductory level summary of the discovery of the Chicxulub impact site. The article describes geologic evidence used to interpret the impact structure and the implications these have for the Cretaceous/Tertiary mass extinction. Other topics include the extinction of dinosaurs, tsunami waves, wildfires, shocked quartz, impact melt rocks, impact breccias, and the use of subsurface geophysical and drill core data.

This resource is referenced here:
Subject: Biology, Geoscience:Lunar and Planetary Science, Geology
Resource Type: Audio/Visual:Images/Illustrations, Scientific Resources:Overview/Reference Work
Special Interest: Hazards
Focus on the Cretaceous: Paleontology, Paleogeography
Topics: Solar system, Solid Earth, Time/Earth History, BiosphereKeywords: Mexico, Yucatan