Geokem
http://geokem.com/

B.M. Gunn


This site from Dr. Bernie Gunn offers a brief description of volcanic and igneous centers world-wide (and some associated sediments) for which there is reasonable data. The site features regional variation diagrams as well as multi-element fingerprint analyses and data for rare earth elements, metals, and alkaline earth trace elements. The site also includes fractionation diagrams, comparisons between the different types of basalts and other fundamental magma types, graphic comparisons between centers of similar and dissimilar type, and the primary basaltic parental magma trends. The data is continuously updated. In addition, surveys are given of the more important elements, their fractionation paths, their distributions in major rock types, locales where the greatest abundances are likely to be found, and their ratios to related or similar elements.


Subject: Geoscience:Geology:Geochemistry:Elements, Geoscience:Geology:Mineralogy:Phase Equilibria/Thermodynamics, Geoscience:Geology:Igneous and Metamorphic Petrology:PTt Relationships, Geoscience:Geology:Geochemistry:Phase Equilibria/Thermodynamics, Reaction Kinetics/Rates, Geoscience:Geology:Tectonics, Geochemistry:Geochemical Analysis, Geoscience:Geology:Igneous and Metamorphic Petrology:Thermodynamics and Phase Equilibria, Igneous Associations and Tectonic Settings
Resource Type: Datasets and Tools:Datasets, Scientific Resources:Overview/Reference Work
Theme: Teach the Earth:Course Topics:Mineralogy, Petrology, Geochemistry, Teach the Earth:Teaching Topics:Plate Tectonics
Data Source: Observational Data
Science Background Required: Advanced geoscience background required
Topics: Solid Earth:Petrology:Thermodynamics and Phase Equilibria, PTt Relationships, Solid Earth:Geochemistry:Phase Equilibria/Thermodynamics, Solid Earth:Petrology:Igneous Associations and Tectonic Settings, Solid Earth:Geochemistry:Geochemical Analysis, Reaction Kinetics/Rates, Elements, Solid Earth:Mineralogy:Phase Equilibria/ThermodynamicsKeywords: REE, MORB, mid ocean ridge basalt, NMORB, EMORB, OIB, OIB, CAB