Data_Description.txt

Overview:
   The file "Mag_Grav_Grav1vd" holds magnetic and gravity survey data from a
   site near Cloncurry (east of Mount Isa, Queensland).

Fields:
   X: longitude (degrees east).
   Y: latitude (degrees north).
   Mag: Reduced to Pole magnetic map (nT).
   Grav: Bouguer gravity anomaly map (mGal).
   Grav_1vd: 1st vertical derivative of complete Bouguer gravity anomaly map (mGal/m).