The American Journal of Science, Band 256

alkali America Bull analcite australites axes basalt basin beds Beldens biotite boundary curve calcite carbonate Chazyan clay climate clinopyroxene composition compression condensed phases core crust crystalline crystallization deformation deposits diagram dolomite epidote equilibrium experimental feet feldspar figure foliation formation fossil gas phase Geol Geology geosynclinal glacial glaucophane grains granite Highgate Springs Highgate Springs sequence indicate intrusion iron Isle la Motte isobaric Jour Lake lamellae lignin limestone linear lines liquid liquidus loess lower magma Magnesite measured mesostasis metamorphic miles minerals Mountain nepheline O₂ olivine Ordovician oxide percent Periclase plagioclase plane Pleistocene pollen present pressure pyroxene quartz quartzite range ratio region represent ridges rocks samples sand schist sediments shale shows sill silt SiO2 slopes solid solution solubility stratigraphic structure surface temperature teschenites thick tion trend tridymite twinned upper valley values volcanic Wabash wüstite zircon zone