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Humans thrived in South Africa through the Toba super-volcanic eruption ~74,000 years ago

Imagine a year in Africa that summer never arrives. The sky takes on a gray hue during the day and glows red at night. Flowers do not bloom. Trees die in the winter. The post Humans thrived in South Africa through the Toba super-volcanic eruption ~74,000 years ago appeared first on HeritageDaily - Heritage & Archaeology News.

Oakland geology ramble 5: Grass Valley

Over the last few weeks I’ve been exploring the remote land just east of Skyline Boulevard, over the city line in Anthony Chabot Regional Park. Time to show you some of the charming features of Grass Valley, seen here from Redwood Ridge near the Parkridge land bridge. In classic Geology Ramble style, this walk (a […]

Sonoran Desert field trip guides

The Sonoran Desert of Arizona and northern Sonora, Mexico, hosts some of the wildest and most intriguing geology in the Southwest. In March 1990, the Geological Society of America’s Cordilleran Section met in Tucson, Arizona, to review...Show More Summary

Shaking it up with AZGS’ Earthquake Fault Videos

As part of our earthquake preparedness program, ‘Arizona has Earthquakes’, we've produced a suite of video shorts showcasing active fault systems in Arizona. Our objective: to inform the Arizona public and decision-makers of the nature, magnitude and frequency of earthquakes impacting Arizona. Show More Summary

Workers discover ancient coastline in West London

Engineers working on Britain’s new high speed railway have discovered an ancient, sub-tropical coastline dating back 56 million years. The post Workers discover ancient coastline in West London appeared first on HeritageDaily - Heritage & Archaeology News.

Mrs. Geotripper Faces Down the Wolf: Musings on the Canids of the Great Valley

Note: I know this is a coyote, not a wolf. But read on to see why I used the term They've always been here.They've always been here, even though we declared war on them, and have tried to exterminate them out of existence. No doubt they're...Show More Summary

All My Faults are Normal, But Not Really: Travels in Death Valley

Death Valley is the ultimate expression of the extensional forces that have ripped apart the crust of the western United States. The affected area reaches from northern Nevada and Oregon, east to central Utah, and south into Arizona....Show More Summary

Waves on Fire at the Devil's Slide near Half Moon Bay

Even though Geotripper is a geology-based blog, it seems ocean waves don't make an appearance all that often in my posts. Try as I might, I don't photograph them very well, or very creatively. I love them, however, and can watch them for hours at times. Show More Summary

How Low Can You Go? Badwater Basin, and a Real Hell on Earth

Salt flats at Badwater, -282 feet. The snowcapped mountain in the distance is Telescope Peak, 11,049 feet. How bad could it be? On our recent trip to Death Valley, we made the rather mandatory pilgrimage to Badwater, the lowest point in North America at -282 feet (86 meters). Show More Summary

4 Fantastic Pioneering Earth Scientists for International Women's Day

International Women's Day is March 8. Celebrate women in the geosciences with us! -- Read more on

Yosemite's Half Dome Makes an the Central Valley

Once a week, my errands take me past the intersection of Keyes and Hickman Road on the floor of California's Central Valley. There is usually nothing much to be seen there in the late afternoon hour, just some fields of crops and almond orchards. Show More Summary

A new kind of shoreline

Rising sea level is a threat to the Bay area. Already, king tides are flooding the levees and seawalls built for the last century’s ocean. I touched upon this topic a few weeks ago with my proposed walk around Lake Merritt in 2100, assuming that the Bay will be a couple meters higher than today. […]

The Struggle for Life in a Harsh Desert: The Living Fossils of Fossil Falls

Fossil Falls, the Bureau of Land Management site near Little Lake and south of Owens Valley, is one of the strangest sights in the California Desert. The ironic point of Fossil Falls is that it has neither fossils, nor does it have falls. Show More Summary

The Sounds of Science (with apologies to Paul Simon): Kids are More Talented Than You Think

Strange things were afoot on Saturday at Modesto Junior College, where I've been teaching for the last thirty years. There was a Tyrannosaur flipping burgers, and a very cool Triceratops taking orders for Brontoburgers and Raptor dogs. Show More Summary

New study reveals the secret of magmas that produce global treasures

South Africa's history and economy has been built on its rich natural treasures of a number of precious metals, stones and minerals. The post New study reveals the secret of magmas that produce global treasures appeared first on HeritageDaily - Heritage & Archaeology News.

2 Long Reads That Will Make You Rethink Our Relationship with Nature

Human reactions to the forces of nature have made New Orleans one of the most unnatural cities in the world. How long can we hold the line? -- Read more on

Worse and Worse: The Trump Administration's Continuing War on National Parks

The damage to our National Park Service will be catastrophic if Trump gets his way -- Read more on

5-Minute Geology: Fire 'n' Ice Edition

From out-of-this-world craters to glacial calling cards, we've got some very cool, hot geology! -- Read more on

Seeking the Savanna instead of Seas: "Saturday Night Live" and Geology??

Historical geology is a real head trip (remember that term?). Stick geologists in the desert against a cliff like the one above, and they will make a few observations, pick up a few stones (and/or fossils), and in their mind's eye, they...Show More Summary

15 Great Geology Pages to Follow on Facebook

I've found some primo geology pages for you! Prepare for a social media feed filled with outstanding geology -- Read more on

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