The USGS has updated the National Produced Waters Geochemical Database and Map Viewer "to include trace elements, isotopes, and time-series data, as well as nearly 100,000 new samples with greater spatial coverage and from both conventional and unconventional well types, including geothermal. Show More Summary
Arizona's land subsidence program was described in a technical presentation at the American Geophysical Union Fall Meeting in San Francisco, by Brian Conway, from AZ Dept. of Water Resources. The conference drew a record attendance of nearly 25,000. Show More Summary
The Boy Scouts of America is now offering a merit badge for Mining in Society. The Scouts had an informational table at the SME Arizona Conference here in Tucson earlier this month that was drawing a lot of attention. Details on the requirements to earn the badge are posted at http://www.scouting.org/Home/BoyScouts/AdvancementandAwards/MeritBadges/mb-MINE.aspx.
While I'm gradually working my way toward posting a bit about the nappe in Lamoille Canyon, let's take a quick look at more views of the cliffs from the hanging valley pullout. A shadowed view of the cliffs to the northwest. Stunning! A view of the cliffs to the southeast. Show More Summary
Merry Christmas and Happy Holidays to all! As is my tradition, I offer up once again a very big Christmas tree, the General Grant Tree in Kings Canyon National Park. The tree is so large (268 feet high, 40 feet across at the base) that it took three pictures for me to capture it. Show More Summary
There were two small quakes in northern Arizona in the past few days. A magnitude 2.4 event hit 8 miles south of Colorado City on Dec. 22 at about 4:27 p.m. local time [yellow dot marks epicenter. Credit, USGS]A magnitude 1.3 quake occurred on Dec. 23, at 11:57 a.m. local time, about 6 miles ESE of Colorado City [epicenter marked by orange dot].
Led by geophysicist Beata Csatho at the University at Buffalo, the research provides what the authors believe is the first comprehensive picture of how Greenland's ice is vanishing.It suggests that current ice sheet modeling studiesShow More Summary
There’s a little corner of Lake Merritt that the improvers haven’t gotten around to, on the north shore by the pergola. Here the concrete walkway gives way to a stretch of old fill. The original wetland that became Lake Merritt was known as San Antonio Slough. From Oakland’s earliest days, the locals kept trying to […]
President Obama signed into law the National Defense Authorization Ac, which includes a provision for the land swap (Southeast Arizona Land Exchange and Conservation Act) needed for the underground Resolution Copper mine to move forward.Resolution...Show More Summary
OMG, a gigantic river! The Umpqua River below Roseburg, Oregon I'm really more of a desert rat. I hail from a dry valley in California, I take my students on extended field trips to places like Death Valley and the Colorado Plateau. The rivers that I know would be considered something like large creeks in a place like Oregon or Washington. Show More Summary
It starts with little cascades like this... That grow into brooks like this, repeated thousands of times over... Which leads to this... Our Christmas travels took us into the northwest of California and into Oregon, and as luck would have it, we drove right into a continuation of the storms that have been pounding the west coast this month. Show More Summary
Stanford scientists identify a mechanism that accelerated the 2011 Japan earthquake.
The 2010 Cucapah earthquake in Baja California, triggered hundreds of landslides that sent up dust clouds all along the mountain range. David Petley, who writes the Landslide Blog, and his colleagues used remote sensing data and quantified...Show More Summary
Do you know these places? Would a place that has cliffs like these merit being declared a national park?Thankfully, these rocky precipices are in a national park already. But these are not the iconic features that end up in the photo collections of the millions of tourists that visit this place every year. Show More Summary
Grizzly Peak is the highest point in Oakland, at 1754 feet elevation (sources differ). As you approach it on Grizzly Peak Boulevard, it seems to loom quite high. That’s an illusion caused by the eucalyptus forest. As you get closer, you start to see through the trees. And from the bay side, the peak has […]
There is a new book out from the Oak Creek Watershed Council (OCWC) describing the hydrology, hydrogeology, geology, ecology, and history of the Oak Creek Canyon watershed. Well-known geologist Paul Lindberg contributed to hydrology and wrote the geology section, which includes a description of the newly-discovered Oak Creek - Mormon Lake graben. Show More Summary
It's slushy at 4600 feet, anyway.Our phone service--hence internet--is down, so I'm using a 1X Verizon connection. It's just a little slow!I imagine there's a lot of snow at higher elevations, but the details of this storm are difficult to check out at 1X.
Researchers find a small percentage of wells accounts for the majority of emissions.
Source: Greenpeace via Reuters It's hard to imagine a more moronic act by a supposedly respectable environmental organization. I have appreciated the activism of Greenpeace in the past, especially the efforts of the Rainbow Warrior (all three of them) to stop whaling and nuclear testing. Show More Summary
I don’t spend all my time out among Oakland’s rocks. I also take advantage of the Bay area’s opportunities to learn about Earth science. Every year, for instance, I attend the Fall Meeting of the American Geophysical Union, held without fail in San Francisco since 1968. I started in the mid-1980s, and it’s where I’m […]