And suddenly it was gone. The iconic rock arch at Tennessee Beach in Marin unexpectedly gave way, changing the view forever.
Geology
Geology
Celebrate the New Year with Canopus
Put yourself in just the right spot at midnight on New Year’s Eve and you may be able to see the second brightest star in the sky that’s normally invisible in much of the Bay Area — Canopus.
Geology
Cupertino cement plant cutting mercury pollution
The Bay Area’s No. 1 mercury polluter, the Lehigh cement plant in Cupertino, is cleaning its business after the region’s air district passed the strongest air rules in the nation.
Geology
“Global Frackdown” Rally in SF Focuses on Oil and Gas in California
The state is considering new regs on fracking, which could create a new oil boom in California, in a swathe stretching form the Bay Area to Los Angeles.
Geology, Point Reyes Walkabout, Trails
Walking the Rift Zone at Point Reyes
Take a four-mile stroll with Jules Evens through a landscaped shaped by enormous geological forces — and full of wildlife, native plants, and a more than a few puzzles.
Winter Issue 2012
From the Inside Out
Workers digging the new fourth bore of the Caldecott Tunnel are getting a once-in-a-lifetime view of one of the defining features of the East Bay: the range of hills that runs from San Pablo Bay south to Fremont. By visiting just a few accessible sites aboveground, you can find clues that tell the story of how these hills rose from their humble origins as deep ocean sediments and volcanic flows to the iconic fault-riddled hillsides of today.
Geology
Video: Take a Tour of the Marin Headlands with Geologist Doris Sloan
Doris Sloan wrote the book on Bay Area geology and has taught thousands about the rocks beneath our feet.
Geology
Got Quakes on the Mind?
With a handful of very noticeable earthquakes jolting the East Bay, we’re getting a lot of questions about quakes — do small ones release strain? Or foretell the Big One? We get the word from one of UC Berkeley’s top seismologists.
Fall Issue 2011
Book Review: A Coast to Explore: Coastal Geology and Ecology of Central California
By Miles O. Hayes and Jacqueline Michel, Pandion Books, distributed by Heyday, 2010, 352 pages, $29.95. It’s hard to argue with the claim by the South Carolina-based authors of A Coast to Explore that “the shoreline of Central California is … Read more
Summer Issue 2011
A Life in Geologic Time
In the 1970s, mother and peace activist Doris Sloan was working a nonprofit desk job in a basement office in San Francisco when she got into a UC Extension Sierra field class and fell in love with geology. The rest, as they say, is history. Over the subsequent three decades spent teaching, writing, and leading field trips, Sloan has done more than anyone to make the complex geology of California and the Bay Area comprehensible and fun for those of us without PhDs.
