Pillow basalts on the ocean seafloor. Pillow basalts commonly are found at the surface of the seafloor, especially at mid-ocean ridges. There’s no pillow basalts at one place in the Atlantic Ocean, though. At this place the Earth’s mantle is exposed! Â
As a marine geologist, I am somewhat stunned to read this article about missing ocean crust. What is going on here? Is the mantle really exposed? Did massive faulting just mantle rocks?
Tomorrow, I head down to Woods Hole Oceanographic Institution for my biweekly marine geology class and my weekly seafloor petrology lab. You can bet I’m going to be asking my instructors– as well as any other marine geologists I happen to run across– plenty of questions about this article and expedition!