IDENTIFICATION OF SOURCES OF TERRIGENIC SEDIMENTARY ROCKS BASED ON GEOCHEMICAL DATA USING A LINEAR PROGRAMMING MODEL

Abstract

The possibility of identifying sources of terrigenous rocks based on geochemical data using a linear programming model is considered on the example of metasedimentary rocks of the Sakukan Formation of the Kemen Group of the Udokan Complex, Aldan Shield. It is shown that tonalite-trondhjemite gneisses (56.9%) and gneiss-granites (17.3%) of the Olekma complex, Paleoproterozoic granitoids of the Kuanda complex (7.6%) of the Chara-Olekma geoblock, metavolcanic rocks of the Fedorov Formation (15.4%) and gneiss-granites developed within it (1.8%) of the West Aldan megablock could be the sources of metasandstones of the Sakukan Formation. The results obtained are in good agreement with the Nd isotopic and geochronological data available for the metasandstones of the Sakukan Formation, which indicates the wide possibilities of identifying and searching for sources of terrigenous deposits using a linear programming model.