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Geotimes
November 2003
Sara Pratt |
Tracing the Navajo sandstone The thick Navajo sandstone in Zion National Park is one of the largest wind-deposited formations in the geologic record. Geologists have devised a new way to determine the origin of such sedimentary rocks.   |
Geotimes
September 2007
Nicole Branan |
Understanding the Crust Beneath Iran The most recent continent-continent collision on Earth began about 10 to 20 million years ago when the Arabian Plate slammed into Eurasia in what is modern-day Iran. An international team of researchers has brought to light an important piece of this ancient history. |
Geotimes
March 2007 |
Geophenomena Appalachian Mountains Becoming More Rugged... Smoke on the Water... |
Chemistry World
May 28, 2014
Ian Randall |
Earth's earliest continent formed like Iceland The Earth's first continents may have formed in a geological setting similar to modern-day Iceland, according to the geochemical analysis of a newly discovered rock unit from Canada. |
Geotimes
February 2006
Megan Sever |
Carving on Glacial Time A new technique for calculating the rate in which glaciers and rivers erode the landscape is shedding light on the timing of these glacial processes. |
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
November 2006
Carolyn Gramling |
Airing Out an Early Atmosphere Scientists have generally thought that oxygen was scarce in Earth's atmosphere until about 2.4 billion years ago. Now a study based on new evidence suggests that oxygen may actually have been around longer than previously thought. |
Geotimes
September 2006
Lisa Rossbacher |
Big Lonesome Mountain What makes Gros Morne National Park so special is that its stories match the experience each visitor brings. The more geology you know, the more you will see and the richer the visit will be, but the geology meets all visitors at their own level. |
Geotimes
November 2007
Carolyn Gramling |
How Does Your Continent Grow? Data from ancient mantle rocks are helping to shore up the hypothesis that the continental crust was extracted in pulses, during periodic large melting events in the mantle. |
Geotimes
July 2004
Jay Chapman |
Virginia's Highlands The Grayson Highlands offers an opportunity to break the uniformity of the Appalachians and learn about the geologic history of eastern North America. |
Geotimes
October 2004
Katie Donnelly |
Petrology and Politics This scientist is preparing for her upcoming work in Washington, D.C., as the 2004-2005 Congressional Science Fellow for the American Geological Institute. |
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. |
Outside
April 2003 |
Keep Walking Movements to extend the Appalachian Trail along the full length of its namesake mountain system are gaining momentum on both ends of the venerable footpath. |
