American Journal of Science and Arts, Volume 260, Issues 6-10

albite America andesitic Angistorhinus anorthite anthophyllite aragonite arsenic As,S assemblages bars basalt bedrock beds boundary Bowen brucite calcite Cambrian chemical composition contains crystalline crystallization curve cycles determined dolomite equilibrium experimental feet fenestra figure fluidization formation Geol geologic gersdorffite glass glaucophane Goranson grains granite H₂O Harding pegmatite heating igneous Illinoian indicate jadeite Jour Jurassic laumontite lava lawsonite Leptosuchus liquid liquidus Lockatong lower Machaeroprosopus magma magnetization metamorphic minerals Mystriosuchus NiASS normally zoned North oscillatory zoning Pacheco Pass paleomagnetic Paleorhinus particles pegmatite pegmatite melt periclase phase phytosaurs plagioclase plane posterior present pressure pyroxene quartz quenching rammelsbergite ratio reaction rift rocks Rutiodon samples sandstone saturation schist shale silicate SiO2 skull solid solution solubility of water specimens squamosal starting material studies sulfur surface temperature tetrahedron tion tuffs Tuttle univariant lines upper vaesite values vapor volatiles weight percent zonal sequence