Earth sciences phenomena have evolved in time and space jointly, but in practical applications their records are available as temporal records, spatial measurements, or both. If the records are available only spatially, then they are one realization from the regionalized variable (ReV), which has geometrical locations as longitudes (or easting) or latitudes (or northing), with a record of the earth sciences phenomena at the same location, Hence, in practical applications a set of triplicate values (lon- gitude, latitude, record) provides the realization out of many realizations from the ReV concerned. The worth of data in earth sciences and geology is very high since most of the interpretations and.
