Vasily V. Dokuchaev

Vasily Vasilievich Dokuchaev (Василий Васильевич Докучаев) (1840 – 1903) was a Russian geologist.

He worked on soil science, and developed a classification scheme describing five factors for soil formation. He arrived at his theory after extensive field studies on Russian soils in 1883.

A crater on Mars is named in his honor.