Cyclic voltametry data from cathodic poised potential experiments with subsurface crustal samples from CORK borehole observatories at North Pond on the Mid-Atlantic Ridge during R/V Atlantis cruise
Data_Fig_5: Drilling mud gas depth profiles of the COSC-1 borehole Data_Fig_6: Helium depth profile, DLLd, DLLs and DLLd/DLLs values, and fracture depths from core scanning
