This site is a clearinghouse of websites that contain either software or data relating to thermodynamics. It is maintained by Terry Gordon at the University of Calgary. The sites are categorized by subject and include igneous petrology, metamorphic petrology, aqueous geochemistry, commercial sites and programming tools. Each site listed also has a brief description. Full description.

This 93-slide PowerPoint presentation is part of the Whitman College petrology course. The presentation discusses the compatibility of elements, addressing Goldschmidt's Rules, fractionation, and bulk distribution coefficients. Other topics described include batch melting, fractional crystallization, Rayleigh fractionation, rare-earth elements, large-ion-lithophile and high field strength elements. ... Full description.

This site features a tutorial designed to allow students to gain an appreciation of how X-ray crystallography works. Using X-ray diffraction patterns to determine the arrangement of atoms in a molecule requires sophisticated mathematics. This activity depends only on light from an overhead projector passing through a ball-and-stick molecular model placed on the stage of the projector, making it an ... Full description.

This 72-slide PowerPoint presentation discusses mineral assemblages and metamorphic facies in terms of temperature and pressure changes. Eclogite, granulite, amphibolite, blueschist, greenschist, prehnite-pumpellyite, zeolite, sanidinite, pyroxene hornfels, hornblende hornfels, and albite-epidote hornfels facies are defined. The presentation also covers partial overprinting, geothermometers, geobarometers, ... Full description.

This EPA site provides information about health and safety issues concerning Superfund sites. It features links to information about the hazards related to contaminant exposure, emergency response programs, guidelines for pollution prevention, safety tips for environmental cleanup, risk assessment, reporting hazardous substance releases, and other environmental and human health related sites. Full description.

This PowerPoint presentation is part of the Whitman College petrology course. The presentation covers classification of phaneritic igneous rocks, gabbroic rocks, ultramafic rocks, pyroclastic rocks and volcanic rocks using triangular diagrams, and classification of igneous rocks based on total alkalis vs. silica. This resource is part of the Teaching Petrology collection. http://serc.carleton.edu/NAGTWorkshops/petrology03/index.html ... Full description.

This site is the home page for an igneous and metamorphic petrology class at Union College. Features on the page include slide shows, lab exercises, exam study guides, field trip information and photo galleries. Special topics featured on the site include New England igneous and metamorphic rocks, the Skaergaard intrusion, Norwegian eclogites, the Stillwater complex, and Icelandic volcanoes. There ... Full description.

This site provides a comprehensive source of information about thorium. Topics include occurrence, chemical properties, current applications and economics, radiation, government regulations, and control and remediation practices. The site also features links to additional resources with more detailed information about each topic. Full description.

This 27-slide PowerPoint presentation contains a number of schematic diagrams showing continental arc settings. Chemical comparisons of various continental arc magmas are discussed using isotopic variation and the occurrence of rare earth elements. The presentation also covers isotopes, rare earth element characteristics, and the geographic occurrence of plutonic arcs. This resource is part of the ... Full description.

This PowerPoint presentation is part of the Whitman College petrology course. Subjects include fractional crystallization, compaction, flow segregation, volatile transport, the Soret Effect, thermogravitational diffusion, magma mixing, and assimilation. Tectonic-igneous relationships are also addressed. This resource is part of the Teaching Petrology collection. http://serc.carleton.edu/NAGTWorkshops/petrology03/index.html ... Full description.