Journey to the center of the Earth: Geochemist uses helium and lead isotopes to gain insight into makeup of planet’s deep interior

A geochemist studying Samoan volcanoes has found evidence of the planet's early formation still trapped inside Earth. Known as hotspots, volcanic island chains such as Samoa can ancient primordial signatures from the early solar system that have somehow survived billions of years.

Source: ScienceDaily Headlines - October 16, 2014 Category: Science Source Type: news