Temperature fluctuations, maybe from climate or maybe from geothermal systems, amplified a natural process that grew the crystals.
Spain
Posted inEditors' Highlights
Basement Structure Mapped by Phase Autocorrelations of Noise
Cross-correlations of ambient seismic noise are combined with well log data to image shallow crustal basement features in the Ebro Basin in Spain.
Posted inResearch Spotlights
Ground Surveys Reveal Space Weather Risk to Spain’s Power Grid
A survey of bedrock conductivity across Spain improves predictions of how vulnerable the nation’s power grid is to solar storms.
Posted inScience Updates
Joint Aerosol Research Between Cuba and Spain Proves Fruitful
Optics Atmospheric Teams' Workshop; Camagüey, Cuba, 27–29 January 2016