Deep Fluids in the Continents

The debate on the origin and evolution of the fluids in crystalline rocks is very much an ongoing research topic. A number of experimental and research sites, such as the ones discussed in this article, will continue to produce hydrogeochemical information well into the middle of this century as researchers around the globe attempt to understand the hydrogeology and geochemistry of crystalline rock environments. © 2014 Elsevier Ltd. All rights reserved.