Mima mounds south of Seattle, Washington What's life without a little mystery? For years, geologists and geomorphologists have been curious about a landscape that shows up on prairie lands around the American West. It's a regular pattern of low hillocks called mima mounds. Show More Summary
I want to say at the outset that I am not a licensed geologist, only a writer with a degree in the field. But when I read in today’s paper about a ruptured gas line in East Oakland that started a fire at the intersection of Golf Links Road and Fontaine Street on Tuesday, this […]
Scientists are digging deep into the Earth's surface collecting census data on the microbial denizens of the hardened rocks. What they're finding is that, even miles deep and halfway across the globe, many of these communities are somehow quite similar.
I'm in the middle of a week at the Fall Meeting of the American Geophysical Union, in San Francisco. This is typically a whirl of talks, posters, refreshment breaks (coffee in the morning, beer in the afternoon) and throngs of geoscientists. Show More Summary
Little boxes on the hillside, Little boxes made of ticky tacky Little boxes on the hillside, Little boxes all the same, There's a pink one and a green one And a blue one and a yellow one And they're all made out of ticky tacky And they all look just the same... Show More Summary
Willie Nelson: On the Road AgainAlbum: Honeysuckle Rose, 1980This is an obvious Road Song, one for which, possibly, the category was named. In fact, the song was on one of the first road song tapes — surprise, surprise! Another of the...Show More Summary
AZGS is at the Fall Meeting of the American Geophysical Union in San Francisco this week, showcasing our work in a number of areas, but especially the NSF-funded EarthCube and DOE-funded National Geothermal Data System projects. Our formal activities include two exhibit booths, hosting two town halls, and 5 presentations. Show More Summary
There was a time when the seas lapped against the Sierra Nevada foothills. Around 50 million years ago, the Great Valley was a shallow sea trapped between the western edge of the North American continent and a huge subduction zone that was carrying ocean crust, seafloor sediment and assorted volcanoes back into the crust and down into the mantle. Show More Summary
Last night I accepted a Special Citation on behalf of AZGS from the Mining Foundation of the Southwest at their annual awards banquet and fund raiser for the American Mining Hall of Fame. The plaque says “Celebrating 125 years of service,...Show More Summary
This message is for the thousands of geoscientists arriving for the coming week's Fall Meeting of the American Geophysical Union. If you're going to San Francisco, be sure to wear... Read Full Post
Geology gave the world the gift of immense time: not just the measly millennia counted by old civilizations, but millions of years and billions of years, more years than anyone could count. It made even the absurdly long sacred chronologies of the Hindus look reasonable. Show More Summary
An international research group lead by GFZ analysed the main shock as well as the following postseismic phase with a dense network of instruments including more than 60 high-resolution GPS stations (Earth and Planetary Science Letters, Dec. 01, 2013). The aftershocks and the now found "silent" afterslip are key to understand the processes occurring after strong earthquakes.
Academics have developed a new internationally agreed radiocarbon calibration curve which will allow key past events to be dated more accurately.
A brief remark at a talk in October led me to a clever bit of science that offered a way through the paleomagnetic mirror problem. By that I mean the ambiguity that results when a moving continent heads toward the equator. The paleomagnetic...Show More Summary
The city of Vancouver, British Columbia, in 2011 commissioned an update to its plans to deal with a large earthquake. This is a big deal because Vancouver, like Seattle and Portland and many other cities in the Pacific Northwest and northernmost California, all face the threat of a Japan-style magnitude-9 earthquake at a time unknown. Show More Summary
...the trail through the forest began innocently enough. Greenery was everywhere. The travelers were hungry, driven by a need for food, a need so bad they could smell it. They drove deeper into the dark shadows. They began to be aware of a pervasive odor, an odor that awakened memories of delicious feasts from the past. Show More Summary
So California is all about earthquakes, right? Oklahoma has tornadoes, Florida has hurricanes, Minnesota has blizzards,and California has the San Andreas fault (and all the other active faults that no one seems to remember the names of). Show More Summary
The recent walk by the Oakland Urban Paths group took us past a catastrophe I hadn’t seen before: the landslide of 15 January 1970. It removed nearly all the homes on the east side of Kitchener Court, just south of the LDS Temple, and dumped the ground into the valley of upper Peralta Creek. The […]