Geology

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