Yes it is.
Geochemistry
This is geochemistry.
geochemistry is the study of the chemical structure of the earth
Geochemistry relies heavily on the branch of earth science known as geology. Geology focuses on the study of the Earth's structure, composition, and processes, providing important context for understanding the chemical interactions and processes that geochemists investigate.
Rocks are made of minerals. Minerals have a chemical formula. The ratios of minerals in a rock may be an indicator of how a rock was formed and under what environmental circumstances. Good stuff for geologists.
Geology, meteorology, astronomy, oceanology, and environmental science
Mohammed Ikramuddin has written: 'Geochemistry and geochronology of Precambrian dikes from Mysore State, India' -- subject(s): Dikes (Geology), Geochemistry, Geology, Stratigraphic, Stratigraphic Geology
its geology
A. A. Beus has written: 'Geochemistry of the lithosphere' -- subject(s): Geochemistry, Analysis, Rocks 'Geology of Tungsten'
B. G. Hoal has written: 'The geology and geochemistry of the Proterozoic Awasib Mountain terrain, southern Namibia' -- subject(s): Awasib Mountains Region, Geochemistry, Geology, Namibia, Stratigraphic Geology
P. K. Banerjee has written: 'Geology and geochemistry of the Sukinda ultramafic field, Cuttack District, Orissa' -- subject(s): Geochemistry, Geology, Ultrabasic Rocks
Diane H. Carlson has written: 'Physical geology' -- subject(s): Physical geology, Textbooks 'Geology and geochemistry of the Coulee Dam Intrusive Suite and associated younger intrusive rocks, Colville batholith Washington' -- subject(s): Geochemistry, Intrusions (Geology), Petrology, Structural Geology