Related topics: tectonic plates · earth · mars · earthquake · fossil

Old maps and dead clams help solve coastal boulder mystery

Perched atop the sheer coastal cliffs of Ireland's Aran Islands, ridges of giant boulders have puzzled geologists for years. What forces could have torn these rocks from the cliff edges high above sea level and deposited ...

Caves and their dripstones tell us about the uplift of mountains

In a recent Geology paper geologists from the universities of Innsbruck and Leeds report on ancient cave systems discovered near the summits of the Allgau Mountains that preserved the oldest radiometrically dated dripstones ...

Video: How do we know the age of the Earth?

The Earth is 4.565 billion years old, give or take a few million years. How do scientists know that? Since there's no "established in" plaque stuck in a cliff somewhere, geologists deduced the age of the Earth thanks to a ...

Helping to forecast earthquakes in Salt Lake Valley

Salt Lake Valley, home to the Salt Lake City segment of the Wasatch fault zone and the West Valley fault zone, has been the site of repeated surface-faulting earthquakes (of about magnitude 6.5 to 7). New research trenches ...

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