Andrew Alden earned his geology degree at the University of New Hampshire and moved back to the Bay Area to work at the U.S. Geological Survey for six years. He has written on geology for About.com since its founding in 1997. In 2007, he started the Oakland Geology blog, which won recognition as "Best of the East Bay" from the East Bay Express in 2010. In writing about geology in the Bay Area and surroundings, he hopes to share some of the useful and pleasurable insights that geologists give us—not just facts about the deep past, but an attitude that might be called the deep present.
Andrew Alden's Latest Posts
The rise of a small, fuming island after a large distant quake may not be such an exotic event. Look for one when the next Big One strikes California.
Two new papers shed light on the deepest earthquakes: one by documenting the largest deep event yet recorded, the other by reproducing these events at the nanoscale in the high-pressure lab.
A new climate chronology for California has come from one of our quintessential trees, the blue oak.
A tectonic "Big Drip" beneath the southern Sierra Nevada is connected to the creeping faults of Northern California in a new paper published in Geology.
After a wait of more than 50 years, the Integrated Ocean Drilling Program is ready to return to the site of Project Mohole to try and pierce the Earth's crust again.
New tools and old-fashioned sleuthing have cleared away a century's worth of errors from our detailed picture of what the San Andreas fault did to Portola Valley in 1906.
The science of earthquake prediction is fraught with the human tendency to seek conclusions beyond the reach of the data. In this setting, even the fruitless hypothesis of sunspots is seductive.
Spent reactor fuel and other high-level radioactive wastes may be better off in soft rocks than hard ones.
Long-range plans by the East Bay Regional Parks District promise at least one geological jewel.
In today’s issue of Science, a team of researchers reports that injection fields approaching an earthquake-ready state may give us a telltale sign: seismic waves sweeping through from huge distant shocks set off tiny local shakers in the process called dynamic triggering.
The record-breaking Australian summer of 2012–13 could not have happened without the human disturbances—greenhouse gases, aerosols and ozone—that underlie global warming. Australia’s experience may provide a clue about the future for dry continental areas like our own American West.
The best all-around geological museum in the Bay Area is in Fremont, catering to tomorrow's scientists and their teachers.
In the new Gallery of California Natural Sciences, to be unveiled tomorrow, no one will mistake California for someplace else again.
This loop through the gold country's rocks and history will have you taking your time, rather than trying to make time.