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Research opens fresh view on volcanic plumbing systems

Volcanic eruptions such as Mount St. Helens' in 1980 show the explosiveness of magma moving through the Earth's crust. The post Research opens fresh view on volcanic plumbing systems appeared first on HeritageDaily - Heritage & Archaeology News.

Peridotite-basalt lampposts

The Lakeside Regency Plaza, 1555 Lakeside Drive, is the 15-story condo building next to the Scottish Rite Temple. Built in 1968, it’s definitely of its time yet of enduring taste. I paid it no mind until a few days ago, when I noticed the four artisanal lampposts that flank its driveway. In their own way, […]

Red Fox on the Tuolumne River

5 months agoAcademics / Geology : Geotripper

After traveling several thousand miles through half a dozen national parks, you'd think I would be tired of watching for wild animals, but no, that never happens. It was a nice surprise this morning to see this Red Fox (Vulpes vulpes) on my more or less daily walk along the Tuolumne River. Show More Summary

Would You Go? The Pit Craters of Kilauea Volcano

5 months agoAcademics / Geology : Geotripper

Eddie Aikau is a Hawai'i legend. Born in 1946, he was an ancestor of Hawaiian kings, who in antiquity were the only ones allowed to surf. Eddie trained himself to become one of the great surfers of his day, but more importantly he was the first state paid lifeguard on the North Shore of Oahu. Show More Summary

Just How Big is Mt. Shasta in Northern California? Getting a sense of scale...

5 months agoAcademics / Geology : Geotripper

Mt. Shasta is a big mountain. It becomes visible from upwards of a hundred miles away. Topping out at 14,180 feet (4,322 m), it has the greatest volume of any Cascades stratovolcano at around a hundred cubic miles of lava flows and ash (the less visible shield volcanoes like Medicine Lake Highland are larger however). Show More Summary

BLM invites comments on ‘pozzolan’ mine in Skull Valley, central Arizona

Pozzolan deposit of southern California. The Bureau of Land Management’s (BLM) Hassayampa Field Office recently received a Draft Mining and Reclamation Plan of Operations from Kirkland Mining Company for developing a high quality pozzolan...Show More Summary

Invaders on the Tuolumne River!

5 months agoAcademics / Geology : Geotripper

I know I seem easily distracted. I'm working on two blog series at the moment, my explorations in Hawai'i, and our recently completed journey through the Pacific Northwest. But that's the joy of blogging. I can write about anything I want, when I want! The thing is, adventures never end. Show More Summary

Chasing Volcanoes and Overthrusts: Exploring the Pacific Northwest and the Northern Rocky Mountains

5 months agoAcademics / Geology : Geotripper

Mt. Shasta from Interstate 5 in the vicinity of Red Bluff and Corning A few weeks ago I had the privilege of attending a field trip on Kilauea volcano on the Big Island with Don Swanson and Tina Neal of the Hawaii Volcano Observatory (and I'm probably not done with those blogs yet, by the way). Show More Summary

And...Geotripper is Back! What a Long Strange Journey it's Been...

5 months agoAcademics / Geology : Geotripper

I'm back from a journey to the Pacific Northwest and the Northern Rocky Mountains with 18 students and volunteers. We've been gone for two weeks, and Wi-Fi was practically nonexistent, and I was constantly on the run anyway, so total internet silence ensued. Show More Summary

A map that fills a 500-million year gap in Earth’s history

Earth is estimated to be around 4.5 billion years old, with life first appearing around 3 billion years ago. The post A map that fills a 500-million year gap in Earth’s history appeared first on HeritageDaily - Heritage & Archaeology News.

HayWired, an imaginary earthquake coming in 2018

Earthquakes are always a surprise, but we can be ready for them. Or, more ready. We can practice on a household basis, whether it’s a simple “Drop, Cover, Hold On” drill or a series of family meetings to go over scenarios — what if Mom’s stuck at work? What if we’re all out of town? […]

Global Tectonics and Marine Animal Diversity

Arizona Geological Society - 11 July 2017. The Society's July's dinner meeting hosts speaker Dr. Andrew Zaffos, Arizona Geological Survey (AZGS), discussing the role of global tectonics on marine animal diversity. Andrew joined AZGS in June 2017 to replace Steve Richard (retired Dec. Show More Summary

Following a trail of galena and cerussite mineral flakes to track Zuni and Pueblo potters from AD 1275 - AD 1670

Southwestern North America (D. Rumsey Collection) “ I am an archaeologist who uses lead isotope analysis to source the ores used to make glaze paints on pre-contact and early historic Pueblo glaze painted pottery.”, was the introductory...Show More Summary

Liesegang Banding: Automatic Art

Nature is a marvelous painter. --

Born in Catastrophe: Silver Lake

A serene little Pacific Northwest lake has a violent origin. -- Read more on

Touting the contribution of geoscience to the Arizona economy

Page 1 of 2 page Geoscience and Arizona. How do you quantify the impact of geology and the geoscience community on the health and vigor of a state’s economy? That’s no small task, but the American Geosciences Institute, an umbrella organization...Show More Summary

Sweeping Sands

Let's visit some dunes I have known - including some frozen in time. -- Read more on

Permanent Impermanence, or How the Fudge Did That Fossilize?

Imagine the weather turning to stone... --

Oakland building stones: Serpentinite

In a modest West Oakland neighborhood on Market Street is the modest West Grand Shopping Center. Its ordinary building is clad in rough stone, an exterior treatment similar to the Kaiser Building and many other examples. But at the West Grand Shopping Center, the cladding consists of fist-sized pieces of beautiful serpentine rock. The front […]

Revisiting interactive geochemical & mineralogic maps for soils of U.S.

Copper in soil at 0-5 cm depth From 2007 to 2010, the U.S. Geological Survey collected soil samples from 4,857 sites throughout the conterminous United States to support the North American Soil Geochemical Landscapes Project. Hematite...Show More Summary

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