About the book: 1934 / Scientific and fiction book for young exploration geologists. The book equips the reader with the necessary knowledge to independently understand the geological structure of the area, find rock outcrops, sample placers, take a sample and document their exploration work. The book teaches how to find traces of past life in the layers of the earth's crust and store the fossils found. The appendix gives a description of those minerals that are either the most widespread or are especially needed by industry. The simplest methods for determining minerals, geological signs of the occurrence of minerals and their use in industry are indicated.