geochemistry
21Organic geochemistry — is the study of the impacts and processes that organisms have had on the Earth. The study of organic geochemistry is usually traced to the work of Alfred E. Treibs, the father of organic geochemistry. [1] Treibs first isolated metalloporphyrins… …
22Isotope geochemistry — is an aspect of geology based upon study of the relative and absolute concentrations of the elements and their isotopes in the Earth. Broadly, the field is divided into two branches: stable and radiogenic isotope geochemistry.Lead lead isotope… …
23Compatibility (geochemistry) — In geochemistry, compatibility is a measure of how readily a particular trace element substitutes for a major element within a mineral. Compatibility of an ion is controlled by two things: its valence and its ionic radius. Both must approximate… …
24Urey Medal (European Association for Geochemistry) — The Urey Medal is given annually by the European Association for Geochemistry for outstanding contributions advancing Geochemistry over a career. [ [http://www.lmtg.obs mip.fr/user/eag/urey.htm European Association for Geochemistry] ] The award… …
25Petroleum geochemistry — is the application of chemical principles to the study of the origin, migration, accumulation, and alteration of petroleum...(John M. Hunt, 1979). [Hunt, J.M., 1979. Petroleum Geochemistry and Geology . Freeman, San Francisco ISBN 0716710056]… …
26Geology and Geochemistry — ▪ 2008 Introduction Diamond inclusions in ancient terrestrial rock provided clues about the early history of Earth s crust. Scientists studied slow earthquakes and the crystalline structure of Earth s inner core. International scientific studies… …
27Geochemical — geochemistry ge o*chem is*try (j[=e] [ o]*k[e^]m [i^]s*tr[y^]), n. [Gr. ge a, gh^, the earth + chemistry.] The study of the chemical composition of, and of actual or possible chemical changes in, the crust of the earth. {Ge o*chem ic*al}, a. {Ge… …
28Geochemist — geochemistry ge o*chem is*try (j[=e] [ o]*k[e^]m [i^]s*tr[y^]), n. [Gr. ge a, gh^, the earth + chemistry.] The study of the chemical composition of, and of actual or possible chemical changes in, the crust of the earth. {Ge o*chem ic*al}, a. {Ge… …
29Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
30geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
