Abstract: The disclosure relates to the fields of geology and geotechnics, and to a system for description of vertical sequences of rocks in cores and outcrops. The system and process provide a way to describe vertical sequences of rocks in digital media through gestures on a device equipped with a touchscreen. The process allows inserting data simply and quickly and uses a geological feature vocabulary and a library of standardized icons, an aspect that eliminates the heterogeneity of the data obtained in diverse descriptions and allows analyzing the captured data automatically by computer. The benefits include, but are not limited to: elimination of vocabulary heterogeneity and description formats of vertical sequences of rocks; generation of customized reports; data export to files with standardized formats for data exchange among software applications; reduction of the time used in the description; reduction of the time used to generate technical reports.