Petroleum geology is an interdisciplinary field composed of geophysics, geochemistry, and paleontology. It includes scientific disciplines&colon; Agronomy, Botany, Ecology, Forestry, Geology, Geochemistry, Hydrogeology, and Wildlife Biology. The term incorporates aspects of geophysics, geochemistry, mineralogy, geodesy, and cartography. Chemistry and the earth sciences intersect in areas like geochemistry and hydrology. The tectonic environment is constrained by a combination of geophysics, surface geology, geochemistry, and metallogenesis. The technique is used extensively in isotope geochemistry, geochronology, and in cosmochemistry. This, too, is considered water within the geochemistry and geophysics fields. Palynofacies studies are often linked to investigations of the organic geochemistry of sedimentary rocks. He holds a graduate degree in geology, specializing in geochemistry. He's also the vice-president of the "Chinese Society for Mineralogy, Petrology and Geochemistry". This field is termed stable isotope geochemistry. In 1926 Vernadsky coined the term biogeochemistry as a sub-discipline of geochemistry. Specializations include cosmochemistry, biochemistry and organic geochemistry. Crucially, solubility applies to all areas of chemistry, geochemistry, inorganic, physical, organic and biochemistry. Likewise chemistry is represented by such fields as biochemistry, chemical biology, geochemistry and astrochemistry.