The American Journal of ScienceJ.D. & E.S. Dana, 1921 |
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... Oxide ; by R. W. G. WYCKOFF . 138 153 ART . X. - Mississippian Formations of the Horton - Windsor District , Nova Scotia ; by W. A. BELL ... ART . XI . - Relations of Subjacent Igneous Invasion to Re- gional Metamorphism ( continued ) ...
... Oxide ; by R. W. G. WYCKOFF . 138 153 ART . X. - Mississippian Formations of the Horton - Windsor District , Nova Scotia ; by W. A. BELL ... ART . XI . - Relations of Subjacent Igneous Invasion to Re- gional Metamorphism ( continued ) ...
Стр. iv
... Oxide ; by R. W. G. WYCKOFF . 138 153 ART . X. - Mississippian Formations of the Horton - Windsor District , Nova Scotia ; by W. A. BELL ... ART . XI . - Relations of Subjacent Igneous Invasion to Re- gional Metamorphism ( continued ) ...
... Oxide ; by R. W. G. WYCKOFF . 138 153 ART . X. - Mississippian Formations of the Horton - Windsor District , Nova Scotia ; by W. A. BELL ... ART . XI . - Relations of Subjacent Igneous Invasion to Re- gional Metamorphism ( continued ) ...
Стр. 20
... oxide - the augites - is one of the most puzzling and , in some respects , one of the most important that are presented by the rock - forming minerals . In an effort to aid its solution , I have made during the last few years a number ...
... oxide - the augites - is one of the most puzzling and , in some respects , one of the most important that are presented by the rock - forming minerals . In an effort to aid its solution , I have made during the last few years a number ...
Стр. 23
... oxides are not separated in many of them . Lacroix has called attention " to these serious defects in all the existing analyses of pyroxenes of Vesuvius , and I can only join with him in urging the need for better analyses of this min ...
... oxides are not separated in many of them . Lacroix has called attention " to these serious defects in all the existing analyses of pyroxenes of Vesuvius , and I can only join with him in urging the need for better analyses of this min ...
Стр. 29
... - separation of the iron oxides . Discussion . - Any extended discussion of my analysis is unnecessary here , and will be reserved for a future occasion , in connection with those of other Italian augites Augite from Vesuvius and Etna . 29.
... - separation of the iron oxides . Discussion . - Any extended discussion of my analysis is unnecessary here , and will be reserved for a future occasion , in connection with those of other Italian augites Augite from Vesuvius and Etna . 29.
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Ankylosaurus appear armor atoms augite Basin batholithic biotite bone Bull bullæ canine centrum character chemical Chionophila clay cliff Cretaceous crystals deformation Delicias beds deposits depth described developed Devonian diameter Eporeodon erosion evidence fault fauna feet figure folding foramen formation fossils genera genus Geological gneiss granite Hewett Holotype hypocone igneous incisive foramina infra-orbital John Day Jour later lattice layers limestone lower magma malar Marsh material metamorphism miles minerals Mississippian Mountain Muddy Muddy Mountains Nodosaurus occur Oligocene orbit Oreodon orientite oxide Paleozoic Permian plane plates Polacanthus portion posterior postglenoid premolar present probably quartz quartzite region ribs ridges River rocks sagittal crest sandstone schists sediments shale skull space groups species specimens Stegosaurus strata structure superior molars surface Survey terraces thick thin tion U. S. Geol unconformity upper valley vertebræ width Windsor zone zygoma