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Geotimes
July 2003
Josh Chamot |
Jumbled Missouri geology linked to impact Combining a good bit of geologic sleuthing with a fortunate twist, Kevin Evans and colleagues at Southwest Missouri State University have uncovered what may be the fifth-largest impact structure in the United States.   |
Geotimes
January 2004
Lisa M. Pinsker |
Impacts in Space and on Earth: An Interview with Carolyn Shoemaker Carolyn Shoemaker has discovered more comets than anyone else alive today. Under the tutelage of her late husband, Carolyn learned how to identify these objects both in the sky and on the ground. |
Geotimes
January 2004
Megan Sever |
Unraveling the Chicxulub Case On the Yucatan Peninsula in Mexico, geologists are drilling one of Earth's three largest impact structures, hoping to reveal clues about a devastating event linked to the extinction of the dinosaurs 65 million years ago. |
Geotimes
May 2005
Megan Sever |
Meteor Crater's Slow Impact New findings suggest that rather than one large meteorite striking the ground at a high velocity, a lower velocity, pancake-shaped swarm of meteorite pieces -- formed from the explosion a larger meteorite -- likely carved out Meteor Crater. |
Geotimes
January 2006
Megan Sever |
Sizing up a Crater New modeling of the impact of an Eocene extraterrestrial projectile in what is now the Chesapeake Bay shows that it was smaller than previously thought, and could help better predict the effects of future potential impacts. |
Geotimes
April 2005
Peter A. Scholle |
Geologic Etiquette in a Mechanized Era Geologists should exercise more considerate choices regarding the rocks they destroy for science. |
Geotimes
January 2004
C. Wylie Poag |
Coring the Chesapeake Bay Impact Crater An extraterrestrial impact 36 million years ago left a lasting impression in the Chesapeake Bay and continues to affect the region's environment today. |
Geotimes
June 2004
Megan Sever |
Closing the Dating Gap Assigning dates to archaeological artifacts from the chronological gap may now be somewhat easier, thanks to a new method involving quartz crystals. |
Geotimes
March 2005
Sara Pratt |
Rocky Debate Over Early Life Scientists fail to replicate a 1996 study on 3.85-billion-year-old rocks that pushed back the date of the earliest evidence for life on Earth by several hundred million years. |
Geotimes
September 2004
Sarah Todd Davidson |
The Center of it All: Visiting Central Park New York's Central Park presents a treasure trove of important geologic information. |
Geotimes
October 2004
Megan Sever |
Mount St. Helens Alert Level Lowered On Wednesday morning, the U.S. Geological Survey lowered the alert level for Mount St. Helens in Washington from a Level 3 Volcano Alert to a Level 2 Volcano Advisory. |
Geotimes
July 2004
Lisa Rossbacher |
Manna from the Heavens? Most geologists have multiple opportunities to identify rock samples collected by the public. And the more valuable the finder believes the materials to be, the less he wants to believe it is pyrite or quartz or a bovine femur. |
Chemistry World
March 1, 2011
Jon Cartwright |
Earth's missing xenon could be hiding in quartz For decades scientists have known that the abundance of xenon is curiously lower than predicted from comparisons with the other noble gases. Now chemists in Canada have evidence that it is residing in the ground beneath our feet. |
Geotimes
March 2007
Margaret Putney |
OneGeology: A Site for All In partnership with the United Nations' International Year of Planet Earth, geologists around the world are coming together to form a world geological map, accessible to all on the Internet. |
Geotimes
December 2003
Hatheway et al. |
Applied Geology in Service of the Public Welfare Engineering geologists play a crucial role in providing geological information to the public. |
