This is a picture of a rift in our world. It was taken June 21 at Hawaii’s Kilauea volcano, in a rip called Fissure 8. What a remarkably utilitarian name for a tear in the planet. I was captivated by images like these all summer, and I forgot about them when my attention turned to […]
Rocks
For the past two years, I have been following the voyage of OSIRIS-REx, a spacecraft headed to an asteroid called Bennu. Bennu is important for at least four reasons: Local space history may recorded in its rocks, which are about as old as the formation of the solar system. It is carbon-rich and scientists think […]
About a decade before my father died, he asked me to start collecting rocks for him. I didn’t fully understand why, but since I was studying geology at the time, I began to pick them up wherever I visited. Limestone from the Alps; granite from New Zealand. He kept the rocks I collected on a […]
“It’s not your usual rock that you would find,” says Jonathan O’Neil, a geologist at the Carnegie Institution in Washington DC. It’s a bit of an understatement because O’Neil is referring to what he believes is the world’s oldest rock, a funny-looking basalt embedded in the Nuvvuagittuq greenstone belt in northern Quebec. The rock itself […]