Wednesday, September 30, 2009

(9/30/09) K-T Boundary Event


Today in class was basically two things: finishing up the dinosaur lab (which Melina did a stellar job describing yesterday) and reading the article about the "K-T Boundary Event." The "event" that's referred to is the large asteroid that potentially collided with Earth, killing the dinosaurs off forever. Geologists figure that the Yucatan Peninsula is the home of the massive crater that was left by this said asteroid. As to why the dinosaurs died off was very hazy up until the 1970s/1980s, when Walter Alvarez and his father, Luis Alvarez, found clay infested with large amounts of iridium, an element only existing in extraterrestrial objects. This iridium was beginning to pop up all over the K-T Boundary. This turned out to be very impressive evidence that an asteroid did, in fact, collide with out planet millions of years ago, killing off most everything that lived.

But enough about that. Tomorrow's scribe will be none other than Brett. Have fun with the 35 minute period!

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