- The Chemical Secrets Found In Ancient Mars Rocks
Geologists have analyzed 40 meteorites that fell to Earth from Mars those chemical signatures have revealed some secrets of the early Martian atmosphere. The atmospheres of Mars and Earth diverged in important ways very early in the 4.6 billion year histo ...
Article - News Staff - Apr 16 2014 - 2:37pm
- Lost World: 3-Million-Year-Old Landscape Still Exists Under Greenland Ice Sheet
Parts of the landscape underlying the massive Greenland ice sheet may have been undisturbed for almost 3 million years, since the island became completely ice-covered, say researchers who based their discovery on an analysis of the chemical composition of ...
Article - News Staff - Apr 18 2014 - 11:12am
- Mountain-Building And The End Of An Ancient Ocean
When and where did the ancient Iapetus Ocean suture (the most fundamental Appalachian structure) form? Is part of New England made up of ancient African-derived rocks? What is the Moretown terrane? Mountain-building events, called "orogenies," ...
Article - News Staff - Apr 28 2014 - 9:32am
- Earthquake Science: Magnitude Scales With Maturity Of Transform Faults
The oldest sections of transform faults, such as the North Anatolian Fault Zone and the San Andreas Fault, produce the largest earthquakes, putting important limits on the potential seismic hazard for less mature parts of fault zones, according to a new p ...
Article - News Staff - Apr 30 2014 - 11:01am
- We Can See The Bedrock For The Trees
University of California, Berkeley, geologist William Dietrich pioneered the application of airborne LIDAR, light detection and ranging, to map mountainous terrain, stripping away the vegetation to see the underlying ground surface- but he still couldn ...
Article - News Staff - Apr 30 2014 - 10:30pm
- Frictional Melting May Help Predict Volcanic Eruption Behavior
A new discovery in the study of how lava dome volcanoes erupt may help predict how a volcanic eruption will behave. Volcanologists say a process called frictional melting plays a role in determining how a volcano will erupt, by dictating how fast magma ca ...
Article - News Staff - May 4 2014 - 3:00pm
- Winter Rains And Groundwater Depletion Change Height Of Sierra Nevada Mountains
Can using a well move a mountain? It will if the well is big enough. Winter rains and summer groundwater pumping in California's Central Valley make the Sierra Nevada and Coast Mountain Ranges sink and rise. How much? A few millimeters each year. Tha ...
Article - News Staff - May 14 2014 - 2:38pm
- Record Number Of Oklahoma Tremors: Is A Big Earthquake Coming?
Since October 2013, the rate of earthquakes in Oklahoma has been up by about 50 percent, which has geologists thinking about the chance for a damaging quake in central Oklahoma. A joint statement by the U.S. Geological Survey and Oklahoma Geological Surve ...
Article - News Staff - May 15 2014 - 5:00am
- The Earth Is 60 Million Years Older Than Thought- So Is The Moon
How were the earth and the moon formed? A giant impact between Earth's ancestor and a planet-sized body occurred At the Goldschmidt Geochemistry Conference in Sacramento, researchers from the University of Lorraine say that occurred 40 million years ...
Article - News Staff - Jun 10 2014 - 2:53pm
- How Did Earth Avoid Runaway Global Warming In The Past?
There have been times in our geological history when CO2 levels were 10X what they are today, yet warming was only slightly higher. Unlike what you often read in simplistic media accounts, there are a lot of variables in climate and weather and temperatur ...
Article - News Staff - Jun 11 2014 - 4:31pm