Break-up of the supercontinent Gondwana about 130 Million years ago could have lead to a completely different shape of the African and South American continent with an ocean south of today's Sahara desert.
The American Geosciences Institute advises that fifteen organizations have formed the new Mineral Science and Information Coalition (MSIC) to advocate for reinvigorated minerals science and information functions in the federal government. Show More Summary
This week's Geo-Whiz Quiz is the third of four no-holds-barred, mixed-martial-arts General Geology Quizzes, one that only the most polymathic of geophiles will master! Show us your wide intellectual range and your imperturbable aplomb as you take this challenging quiz. Do your worst—I'll bet you will.
Frankly, if we lived next to a major fault zone or an active volcano, the seismic record above on our department seismometer would be worrisome beyond measure. Earthquake after earthquake usually means very bad things, the harmonic tremor leading to a major volcanic eruption or the buildup to a huge earthquake. Show More Summary
We're all taught about the water cycle: that lovely diagram with the sun and the clouds and the rain and the rivers, all carrying water around in a nice loop. I'm happy to tell you that the diagram is still good sound science! However, lately we've learned about a second, tectonic water cycle that goes deep into the mantle. Show More Summary
The lands east of the Sierra Nevada are dry. The massive mountain wall of granitic rock captures the Pacific storms that reach California and wrings the moisture out, leaving barren deserts and culminating in the hottest spot in the world and the driest locality in North America: Death Valley. Show More Summary
The Boy Scouts of America have officially unveiled the first "Mining in Society" merit badge, according to Kelly Norton, head of the Arizona Mining Association."Whether it's the source of the metal in a Dutch oven or the key components...Show More Summary
The next stop on our way to Death Valley National Park was one of the most ideal locations for learning the basics of stratigraphy to be found anywhere: Red Rock Canyon State Park in the El Paso Mountains along the Garlock Fault. The...Show More Summary
Earth Magazine asked its followers on Twitter yesterday, "what is the collective noun for a group of geologists?" You know, a flock of birds, a pack of dogs, a ——— of geologists. That led to a fun morning. My first candidate is a formation of geologists, but Tony Martin (@Ichnologist) suggested a mélange. Show More Summary
It's not the usual subject matter of the fence art in my local neighborhood. But I'll take the positive over the obscene any time... And no, I didn't do it.
The Augusta Resources board of directors recommended that its shareholders reject the HudBay takeover of the company. They reportedly have at least 1/3 of the stock committed to that position which is enough to kill the offer, which is aimed at acquiring the Rosemont copper property which is going through final steps of permitting. Show More Summary
Ropy lenticular cloud, southern Sierra Nevada on the Kern River. Photo by Mrs. Geotripper. Our recent adventure in Death Valley National Park had some preliminaries. One doesn't just go headlong into the Valley of Death without a bit of preparation. Show More Summary
The Pine Island Glacier, a major outlet of the West Antarctic Ice Sheet, has been undergoing rapid melting and retreating for the past two decades. But new research by an international team including researchers from Lawrence Livermore National Laboratory shows that this same glacier also experienced rapid thinning about 8,000 years ago.
The 3-billion-year-old sandstone of the Jack Hills area, in Australia, is renowned among geologists for the microscopic grains of zircon it contains. Zircon is a highly resistant mineral that can be recycled many times, in one sedimentary rock after another, for billions of years. Show More Summary
Harrington Avenue runs up a small valley cut into the Fan by a branch of Peralta Creek. It has a high ridge on its south side and a slightly lower one on the north side. Here’s the Google terrain map: and the geologic map to match, marked with the sites of six photos. This part […]
Science is in trouble, they say. Kids just aren't interested in science careers, and schools hardly teach it anyway. And in the poorer parts of the country, the problems are even worse. No one cares anymore. I beg to differ. I teachShow More Summary