Geology

The geological position and ore mineralization of the hypabyssal complexes of the central part of the Omulevsky uplift.

The purpose of this work is to study the petrological and geochemical features of the Rassoshinsky massif, with the subsequent identification of the localization of ore mineralization in it. (this last phrase is too complicated, you could write something like "and show where the ore is" but given the need to use complicated English that Russian Professors have, you may be right) :-)

Tasks:
1. The study of the petrographic features of the object uplift and its ore mineralization; (you may call large areas "objects" in geology but it feels wrong, I'd use uplift)
2. Interpretation of chemical analysis data, as well as the construction of Petrochemical diagrams;
3. The selection of promising areas (much simpler see my braketed comments above)

The Omulevskoe uplift is located on the territory of the Republic of Sakha (Yakutia). It is a terrane, which is part of the "Kolyma loop" of the Verkhoyansk-Chukotka folded belt. The territory under consideration is characterized by a very complex structure. Folded and cover-thrust formations are widely manifested here, and intrusive bodies are also well developed. A diverse set of minerals (gold, copper, lead, zinc, tin, etc.) is are associated with such formations, and this has attracted many scientists. Most of these minerals are associated with granite intrusions. They form large (up to 20 km2), as well as relatively small, formations.

Really very good, I'm an engineer so I've had to check a few technical terms to check spellings etc.  I don't like ", and" but that is more a style issue and as long as you use it the same throughout it works.  I would challenge what is a small formation (since you define large) and the km2 needs to have the 2 as superscript