This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!
Drowned dinosaurs and the asteroid that ended their reign
Pasadena scientists Thomas J. Ahrens and John O Keefe presented a computer study at a Lunar and Planetary Science Conference in Houston proposing that a giant asteroid impact 65 million years ago caused darkness, a massive 500 foot tidal wave and widespread extinction. The scenario refines Alvarez theory origin, linking debris layer to asteroid composition and the dinsoars’ demise.
MENTIONED IN THIS ARTICLE
Pasadena
Calif
Thomas J. Ahrens
California Institute of Technology
Ahrens
John O’keefe
Houston
O‘keefe
Earth
O’keefe
Luis and
Walter Alvarez
University of California At Berkeley
Alvarez