Bulletin of the Geological Society of America, Volume 87, Issues 5-8Geological Society of America, 1976 - Geology Vols. 1-44 include Proceedings of the annual meeting, 1889-1933, later published separately. |
Contents
Bulletin | 641 |
Element partitioning in alkali feldspars from three intrusive | 657 |
Aeromagnetic survey of the San Gabriel Anorthosite Complex | 675 |
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Common terms and phrases
America Bull analyses anomalies basalt Basin batholith biotite boundary calcite carbonate Cenozoic channel composition conodonts cooling cores correlation Cretaceous crystallization debris deformation deposits depth dikes diorite Dolomite emplacement facies fault zone feldspar Figure flow fold formation fraction fracture Geology Geophys glacial gneiss grains granite gravity groundmass hornblende illite illite/smectite indicate intrusive Island isochron isotopic Jour K-Ar K₂O lava layers limestone mafic magma magnetic MANUSCRIPT RECEIVED melting Mesozoic metamorphic rocks minerals Mountains North occur oceanic olivine orientation Pacific percent Petrology phase phenocrysts plagioclase plate plutonic pyroxene quartz monzonite range ratio reef region relative Ridge rift valley rocks samples sandstone sedimentary sediments sequence shale solution specimens strain stress structural subduction suggested surface Survey Table tectonic temperature thickness tion tonalite transform faults trend turbidites twin U.S. Geol upper values variation volcanic West Yellowstone Yakima basalt