Category: Basic Geology

Guest Video: The Salton Sea

A study at the end of June made headlines about earthquake hazard on the San Andreas Fault. The research looked at the area covered by the Salton Sea: According to news reports, geologists found: . . . a nearly 15.5-mile-long, sheared zone with two, nearly parallel master faults and hundreds of smaller, rung-like cross faults.

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Guest Videos: Gneiss and Gold

It’s great to go for a hike with someone who knows what they’re looking at. Wait. Gold? You’re ending the video right after mentioning gold? Well, let’s head up to the Yukon and get some gold in the pan! But how do you know that the shiny yellow stuff you’ve just collected is gold, not

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Guest Videos: Vermilion Cliffs National Monument

Sometimes geology pulls out all the stops. You might have seen pictures of this place calling it “The Wave,” for obvious reasons. This amazing place, sculpted by water and wind in an arid region, is just one step in a geological “grand staircase” of sedimentary rocks that stretches from Bryce Canyon down into the Grand

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A Very Addictive Online Dinosaur Site

Between working on the ebook and keeping up with Kilauea (see “live” blog link in upper right corner of the page), I can only put up some guest videos to thank people for coming here. However, I found this site, first with the interactive globe that shows what position the continents were in down through

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Guest Videos: Sentinel Spots Suspicious Movement of English Village

Not in the village, of the village. Here’s the village–I don’t know why the bicyclists are driving cars, but that’s Willand in Devonshire they’re driving through: And this is the Sentinel that has discovered Willand is rising at a rate of almost an inch a year It’s a total mystery. This is not a tectonically

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Guest Video: Lake Baikal

Here is a video of a very famous lake. It’s exceptional because there are people in almost every shot, but you never lose sight of the scale. Those cracks and bubbles are so spectacular because the water of Lake Baikal is very clear. The geology behind Baikal–the oldest and deepest lake on the planet–is complicated,

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Guest Videos: Splitting Continents Help Humans Evolve

We worry about climate change today, but down through time people have adapted to a lot of geological drama. In mid-March this year, scientists reported that geologically rapid changes in the landscape of the East African rift affected Stone Age people living there. The researchers apparently are studying cultural development, but I’ve come across this

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Guest Video: Tracking Sauropod Dinosaurs

While my focus these days has narrowed substantially from the original book concept–how the world’s apex predators went from T. rex to cats–news this week about finding the biggest dinosaur tracks ever caught my eye. It was sauropods walking in Jurassic mud that is now stone in Scotland. Trackways like this are the only tangible

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Guest Videos: Zealandia, the Eighth “Continent”

We have all heard the legend of Atlantis, but there really is an ancient sunken landmass just east of Australia that scientists, who just trekked there in 2017, call Zealandia. Check it out! GNS Science shows the economic zone in this video, as well more scientifically appropriate stuff, because this underwater extension of New Zealand

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