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USGS CMG InfoBank Geology School: David Sigurdson

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Title Comment Keywords
Heating Magma 03:09 - 03:59 (00:50) / 0.8 MB volcano, "David Sigurdson", heat, radioactivity, isotope, potassium, thorium, uranium, decay, magma
Crystallized Minerals 09:24 - 10:44 (01:20) / 1.2 MB crystal, "David Sigurdson", "Norman Bowen", "calcic plagioclase", mineral, olivine, pyroxene, hornblende, biotite, temperature, plagioclase, potassium, feldspar, biotite, muscovite, quartz, "reaction series"
Differentiation 11:21 - 12:07 (00:46) / 0.6 MB crystal, "David Sigurdson", "Norman Bowen", granite, differentiation, magma, basalt, mafic, felsic, mineral
Convergent Plate Boundary Magma 14:51 - 16:24 (01:33) / 1.6 MB "convergent plate", andesite, diorite, magma, basalt, lithosphere, marine, sediment, serpentine, melting, crust, felsic, "Bowen's Reaction Series", "David Sigurdson"
Other Plutonic Igneous Rocks 16:24 - 17:40 (01:16) / 1.5 MB continent, crust, mantle, subduction, andesite, diorite, "convergent plate", melting, upwelling, basalt, "lava flow", crust, felsic, viscosity, volcano, pluton, "David Sigurdson"
Anorthosite 22:45 - 24:21 (01:36) / 1.8 MB anorthosite, plutonic, Moon, basalt, magma, crystal, differentiation, calcium, plagioclase, "San Gabriel Mountains", "David Sigurdson"
San Gabriel Anorthosite 24:21 - 24:56 (00:35) / 0.8 MB "San Gabriel Mountains", differentiation, crystal, anorthosite, "David Sigurdson"
Geology School Keywords
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Page Last Modified: Thu Oct 31 04:24:30 PDT 2013  (chd)