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Driving Through the Most Dangerous Plate Boundary in the World: Looking for the "Big One"

Tomales Bay just might be the most contradictory places in all of California. On the one hand, it is one of the most peaceful and serene places in the state, a largely undeveloped fifteen-mile long bay, protected from the worst of Pacific storms and waves by Inverness Ridge. Show More Summary

Driving Across the Most Dangerous Plate Boundary in the World: These Rocks are All Wrong!

The view from Muir Beach Overlook, midway between San Francisco and Point Reyes National Seashore Point Reyes National Seashore: Is it land's end, or ocean's end? From a human point of view, it is the former. This is the far west of North America, and you can't go any farther without a boat or plane. Show More Summary

Trees and serpentine

There’s a stretch of Castle Drive, up in the Piedmont Pines neighborhood, lined with huge trees. On the Walk Oakland map, it’s even labeled “Colonnade of Eucalyptus.” These give me mixed feelings, as tree removal projects have aroused lately elsewhere in Oakland. First, there’s the experience the trees provide. For one thing, you basically can’t […]

Driving Through the Most Dangerous Plate Boundary in the World: Reconnaissance

We're headed on a blog adventure through the most dangerous kind of plate boundary in the world. To make things clear, the boundary we are exploring is not currently the most dangerous in the world, although it is certainly very hazardous. Show More Summary

3rd Annual Arizona Geological Society Doug Shakel Memorial Student Poster Event

Third Annual Arizona Geological Society Doug Shakel Memorial Student Poster Event The AGS will host a special meeting on Saturday, April 18, 2015 at the Interdisciplinary Science and Technology Building #4 (ISTB-4) on the Arizona State University campus (781 South Terrace Road, Tempe, Arizona 85281). Show More Summary

Copper is the official metal of Arizona

Governor Doug Ducey today signed legislation making copper the official metal of the state of Arizona. [Right, copper plates produced in Arizona. Credit, Freeport McMoRan Copper & Gold]According to the announcement from the governor's...Show More Summary

Driving Through the Most Dangerous Plate Boundary in the World: A New Blog Series

Source: adapted from National Park Service and R. J. Lillie. 2005, Parks and Plates Before I get accused of "cable-newsing/click-baiting" with my choice of a headline, I'll amend it to say "Driving through the most dangerous kind of plate boundary in the world". Show More Summary

Battle over museum transfer heats up

The bill to transfer the former Mining & Mineral Museum from the Arizona Historical Society to the Arizona Geological Survey is generating heated debate. Although both AHS and AZGS have taken official neutral positions on SB1200, supporters and opponents are squaring off. Show More Summary

Dropping rent provision keeps museum bill alive

The Arizona House Appropriations Committee today approved SB1200, transferring the former Mining & Mineral Museum building to AZGS to create a new Mining, Mineral, and Natural Resources Educational Museum. It also transfers $428,300Show More Summary

So, Besides Fish, What's the Last Thing One Would Ever Expect to See in Death Valley National Park?

It's one thing to find that a number of fish species survive within the boundaries of Death Valley National Park, which preserves the hottest and driest desert in North America. But sure, springs will persist in many dry environments. Show More Summary

Arizona Mining Review broadcast is online

The March episode of the Arizona Mining Review was video cast this morning and is now posted online at our YouTube channel at I interviewed Ken Green with Fraser Institute, the main author of a new...Show More Summary

$500 million in deferred maintenance in Arizona's national parks

National parks in Arizona have over $516 million in deferred maintenance needs with Grand Canyon accounting for $329 million of that. This is out of a national total of $11.5 billion of maintenance needs according to a report from the...Show More Summary

One of the Most Astounding Viewpoints in America: At the Outer Ring of Hell (but not really)

A place not to missed. That's what I have to say about Dante's View in Death Valley National Park. And if you ever get there, don't just stand in the parking lot. Short walks in several directions offer even better views of the incredible landscape surrounding the lowest place in North America. Show More Summary

UA and ASU geology and earth science programs top ranked

The earth sciences program at the University of Arizona (Geosciences Dept.) was ranked #7 in the U.S. by US News & World Report in new rankings. ASU ranked #16 (School of Earth & Space Exploration).UA Geosciences' Geology program ranked #3 and was #8 in Geophysics and Seismology.

Is There a Deserted Corner of Death Valley? Ubehebe Country

Is there an empty quarter of Death Valley National Park? An area so isolated that tourists are almost never found there? The short answer is: of course. Much of the park is near-primeval wilderness, roadless and untrammeled, and largely devoid of humans. Show More Summary

Calling for support to reauthorize the National Geological & Geophysical Data Preservation Program

Reauthorization of the USGS National Geological and Geophysical Data Preservation Program (NGGDPP) is coming up in Congress and the State Geological Surveys are lining up support from geoscience data users. We are asking our data users to add their names to a letter to Congress supporting reauthorization. Show More Summary

Federal fracking rules: nothing to see in Arizona

The Bureau of Land Management issued rules last week for hydraulic fracturing on Federal and Indian lands. This is mainly aimed at all the wells being drilled into shales for oil and gas. There is no shale oil or shale gas development in Arizona, and the potential has been generally viewed as minor. Show More Summary

Work to Begin on the Ferguson Slide on Yosemite Highway 140

The problem with a lot of beautiful national parks in mountain landscapes is that they lie in mountain landscapes. The rugged terrain is subject to landslides, and my favorite nearby park, Yosemite, is no exception. The park has four...Show More Summary

The Incredible Dunes of Namibia: Geotripper becomes an Armchair Geologist for a day

Here at Geotripper I usually write about my travels, geological and otherwise. I feel inordinately lucky to have a job that allows me to travel a lot, introducing my students to the incredible world that lies beyond the borders of their town. Show More Summary

Postcard from the field - Artillery Mountains

Christy Caudill, Deputy Chief in the AZGS Geoinformatics Section was showcased in the February 2 issue of Eos, the weekly news magazine from the American Geophysical Union, in a full page "postcard from the field."Christy's caption is,...Show More Summary

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