Taxonomy term

costa rica

Young Costa Rican lavas might reflect pockets of primordial mantle

During the Archean, between 4 billion and 2.5 billion years ago, Earth’s super-heated young mantle produced a unique type of lava known as komatiite. In a new study published in Nature Geoscience, researchers looking at 90-million-year-old komatiites in Costa Rica — by far the youngest komatiites ever found — suggest the modern mantle may still harbor pockets of intense heat reminiscent of early Earth.

18 Aug 2017

Travels in Geology: The Osa Peninsula - a different side of Costa Rica

“PURA VIDA!” large block letters proclaimed as I ducked in from a late afternoon downpour into the terminal at San Jose International Airport. Above my head rose a three-story rainforest mural, topped with exuberant cardboard faces pointing to fake wildlife from a wooden gondola. I had just arrived in the Disneyland of ecotourism: Costa Rica.

17 Feb 2009