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Meeting Knowland Park and its rocks

The neighbors of Knowland Park have something special in their midst: a large stretch of relatively untouched land of the Oakland Hills. If you’ve never been up there, it’s easy to dismiss it. It’s exclusive. You need a car, and there aren’t amy big entrances and signage. Only one bus line (the 46L) goes through […]

How would Arizona handle a major earthquake in California?

We recently got an inquiry referencing a blog post I did some time back about whether Californians might stream into Arizona looking for shelter and assistance if a major earthquake strikes that area.We turned to our colleagues at the...Show More Summary

Vagabonding on Dangerous Ground: The End is Coming (of the Cascadia Subduction Zone)!

Sugarloaf Rock at Cape Mendocino. Somewhere out to sea beyond the cape is where the Cascadia Subduction Zone is being destroyed, bit by bit. The end is coming! I'm not referring to the possible destruction caused by the possible magnitude 9 quake that's been in the news of late. Show More Summary

Renewed interest in oil and gas exploration in Mohave County

The recent news that a geophysical contractor is carrying out seismic exploration in the Golden Valley area of Sacramento Valley in Mohave County [right, marked by red pin. Credit Googlemaps], reminds me that I blogged about Vanterra...Show More Summary

Vagabonding on Dangerous Ground: In This Land of the Sasquatch There are Ancient Giants

Yep, the first part of our journey into Dangerous Ground took us to the land of the Sasquatch, the legendary ape-human of the Pacific Northwest forests. That's not him in the picture above, although I could understand the misinterpretation. Show More Summary

Seismic exploration for oil and gas underway in Mohave County

A seismic exploration company is carrying out a geophysical exploration program in Golden Valley in Mohave County to assess the potential for oil and gas deposits. The company's 'thumper' trucks [right, credit Nodal Seismic] send vibrations into the ground which bounce off different geologic units and are recorded at the surface by seismic sensors. Show More Summary

Strange Skies over the Great Valley Today

Tell me this isn't one of the stranger looking skies you've ever seen. I would have been rather freaked seeing this without having known the origin. It's not clouds. We were driving home after our latest journey, and could see a wildfire burning on the west side of the Great Valley north of Sacramento. Show More Summary

Vagabonding on Dangerous Ground: Following the Cascadia Subduction Zone on Highway 101

Lake Crescent in Olympic National Park at the north end of Highway 101. I'm sure that NO ONE in the various forms of mass media WOULD EVER stoop to using HYPERBOLE to increase their readership/viewership. You know, saying things like...Show More Summary

Sudden passing of Bill Dickinson

We just learned from his family that William "Bill" Dickinson, Professor Emeritus in the Dept. of Geosciences at the University of Arizona, died in his sleep early yesterday morning while doing field work in Tonga.His bio on Wikipedia notes that Bill was a member of the U.S. Show More Summary

Caballo Hills rocks and views

The Caballo Hills is the neigborhood flanking Merritt College on the Bay side; it consists of Campus Drive and the Ridgemont development. It’s geologically monotonous, underlain entirely by Leona “rhyolite.” And while all the roads have sidewalks, it’s a steep and exposed hike. Nevertheless the area is highly scenic, and I walked it in the […]

Vagabonding on Dangerous Ground: On the Road in the Pacific Northwest (a new blog series)

The Lost Coast of Northern California If you've been following my blogs for the last few weeks, then you know I've been on the road in the Pacific Northwest. I'm not quite home yet, but I'm headed that way soon, and I've realized that there has been a convergence of events that are leading to my next blog series. Show More Summary

Only 10% of applicants get permits to visit famous "Wave" crossbedded sandstone site

The Bureau of Land Management issues permits for only 20 visitors per day to visit the iconic Wave red sandstone crossbeds in the Paria Canyon - Coyote Buttes Special Management Area. Only about 10% of the 73,000 annual applicants currently get permits. Show More Summary

Getting back on the grid

We're back in Tucson and connected to the rest of the world online after a brief sojourn to the family cabin in northwest Wyoming. My first time off in 14 months came after completing major deliverables for our two biggest funded projects...Show More Summary

Is the Second Coming...Coming Because of an Earthquake in the Pacific Northwest?

No, it's not real, it's a photoshopped hoax after the Indonesia tsunami of 2004 Geotripper stands bravely on the coast of the Pacific Northwest, camera and binoculars in hand, ready to liveblog the end of the world during the apocalyptic earthquake that is going to happen SOON. Show More Summary

Geotripper Finds Rocks in the Pacific Northwest! All is Well

Diablo Reservoir and Colonial Peak in North Cascades National Park I admit to being just a little bit snarky in some of my recent posts concerning the paucity of rocks seen on my latest journey through the Pacific Northwest. SeekingShow More Summary

Geotripper Hallucinates in the Rainforest: Where are the rocks?

Archaeologists and geologists have it kind of tough in the rainforests. The people who lived here in past millennia utilized wood and bone most of the time in the making of their tools and habitations, and neither of those materials lasts for long in the wet acidic soils of a rainforest. Show More Summary

I Toured a Marble Quarry on Vancouver Island: It's almost as if they didn't want us to see the rocks

So, I'm out on Vancouver Island, British Columbia, enjoying my vacation with Mrs. Geotripper, and we're casting about trying to figure out what to do on this 300-mile long island. I'm doing some reading and find out that there is this place called the Saanich Peninsula Marble Quarry that offers tours. Show More Summary

The Redwood Road boulder pile

Up on Redwood Road, across from the entrance to Campus Drive, there’s a pile of boulders of Leona “rhyolite,” probably from the old quarry now occupied by Merritt College, sitting under the trees. While waiting for the 54 bus one day, they waved me over and said, Look at us. I was drawn closer, ever […]

Copper price plummets

Copper has fallen 19 cents at the start of the past week, and was down 30 cents the past month. The close on Wednesday was $2.42/lb after briefly touching $2.40. The price rallied back to $2.54 by week's end. Phoenix-based Freeport McMoRan...Show More Summary

Gigantic Slugs in the Hoh Rainforest of Olympic National Park

Ohmigod, ohmigod! Gigantic parasitic slugs feeding on elk! Ewww! Okay, not really. It's actually a slug, probably, maybe a Banana Slug crawling across an interpretive sign at the beginning of the Hall of Mosses Trail in the Hoh Rainforest of Olympic National Park. Show More Summary

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