In the first half of 2021, I reported on one volcanic eruption after another. Well, it looks like I’ll be continuing to report on volcanoes so long as I’m writing these articles. For instance, here are two recent reports that appeared in the scientific literature…
Being able to predict when a volcano might blow its top is of major import for public safety when volcanoes are near populated areas. When it comes to the difficult science of predicting a volcanic eruption, earth scientists might measure substantial increase in earthquakes and other seismic activity and/or they might use measurements of deformation and bulging in the earth around a volcanic cone.
Writing in the journal Nature Geoscience, a team led by Társilo Girona (University of Alaska Fairbanks) has identified a new way to predict and warn of a potential volcanic eruption, giving earth scientists and public safety officials a new arrow in their quiver. Namely, they have cued into “large-scale thermal unrest,” or subtle but long-term increases in surface heat that can now be detected via Earth monitoring satellites.
In other news, Mount Nyiragongo in the Democratic Republic of the Congo continues to wreak havoc after an initial eruption that killed more than 30 people. Although its major eruptive events and fast-moving lava flows have stopped, some 400,000 evacuees remain forbidden to return home as small earthquakes continue and dangers remain from toxic gases. Mount Nyiragongo is a classic and poignant example of the need to develop ever-better ways to monitor and predict volcanic eruptions.
RESEARCH PLOTS NEAR MOUNT ST. HELENS THREATENED BY A ROAD PROJECT
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Volcanoes and Emeralds
I've had the privilege to give lectures worldwide at shows, club meetings and retreats. I've also done videos and DVDs including Russian Gem Treasures, shot in Russia and another associated with the Smithsonian about American gem mines.
THE MAGIC OF MARBLE
Sculptors and architects have an abundance of natural stone materials to choose from alabaster, travertine, granite, limestone and soapstone to name a few. But one medium has always stood out - marble. For the last 2,500 years, marble has been chosen for many of the greatest works of sculpture and architecture, from the Parthenon of Classical Greece to Michelangelo's Pietà and Washington D.C.'s Lincoln Memorial.
Designing Jewelry Based on the Healing Properties of Colors
The Silver of POTOSI
Triumph, Tragedy & El Tío
CURVED RIDGES SHAPED TIPS
Complex carving with curved ridges and shaped tips can be daunting.
Many of the digging locations for this marcasite are on private property. It was allowed at one point to collect with the owner's permission, but a few rockhounds ruined it for the rest by trespassing, trampling newly-grown crops, and opening and closing gates not allowing cattle to get to their water sources. As a result, this material hasn’t been dug for a few decades.”
From Gems to Fossils, Dig Them at Home
ON THE ROAD WITH THAT CAMPING COUPLE
The Pleasures and Perils of Competitive Exhibiting
Competitive exhibiting offers lots of opportunities to earn awards through venues like club shows, county fairs, trade shows and Federation shows. Since 1995, I've been involved in competitive exhibiting from three perspectives: administering, judging and exhibiting. Here are my suggestions for best practices.
ULTIMATE Gift Guide FOR ROCKHOUNDS
What to Buy for the Rock Lover in Your Life