Science
High 3He/4He in central Panama reveals a distal connection to the Galápagos plume – pnas.org
We report the discovery of anomalously high 3He/4He in “cold” geothermal fluids of central Panama, far from any active volcanoes….
The geochemical composition of the upper mantle is highly heterogeneous, even on a subkilometer scale (e.g., refs. 1 and 2). Plate tectonics controls the global chemical cycling between mantle and crustal reservoirs, with subduction being considered as…
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