Mines and Geosciences Bureau Regional Office No. XI conducts Geologic Quadrangle Mapping of Margus Grande Quadrangle which covers portions of Jose Abad Santos, Davao Occidental and Glan, Sarangani.

This activity aims to produce a geologic map showing the distribution of geologic units and features, including different kinds of rock formations and surficial deposits, and any presence of faults and lineaments within the Margus Grande Quadrangle.