The Philippine Journal of Science, Band 5Bureau of Science, 1910 A memorial number was issued with v.7. |
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absorption aërated alcohol aldehyde amount andesites anhedral aniline augite basalt beds boiling Bureau of Science calcium carbon cent Chem chemical clay clinker color concrete cone conglomerates containing copal crater crystals cubes cubic centimeters deposits diorite distillation Drasche east eastern cordillera elevation eruption euhedral exposure feldspar formation formed fraction free lime geologic grams gravel groundmass hogs hornblende hydrogen hydroxide IDEM Ilocos Norte Iodine number Island Journ Journal kiln kilometers Kilos laboratory lards light limestone Luzon magnetite Manila copal Maquiling material meters method microscopic Mindanao mixture mortar mountains needles obtained olivine oxalic acid oxide Pasig phenocrysts phenol Philippine plagioclase plain PLATE plumes Portland cement present prismoid probably pulp pyroxene quartz reaction region resin River rocks samples sand sintered sintered lime slaked soluble solution Sound stone sunlight Taal Lake Taal Volcano Table temperature tion tube tuff underburned varnish
Beliebte Passagen
Seite 333 - Philippines is something as follows: From early Paleozoic times onward an archipelago has usually marked the position of these islands. Prior to the Eocene nothing definite is known of them, but further investigation will very likely disclose Paleozoic and Mesozoic strata there, as in the Sunda and the Banda islands. During the Eocene it is probable that the lignitic...
Seite 259 - The pulp will be found to contain a 'number of small cuticular cells which do not however shew in the finished paper. The fibres are stained a pale yellow with iodine solution, which fades more rapidly than is usual with coloured pulps. The results obtained from the chemical analysis show that the grass is capable of yielding a good quality of cellulose, suitable in every way for the manufacture of paper. Although the grass is very susceptible to the action of dilute alkalis, the final product is...
Seite 327 - The augite and labradorke are anhedral toward each other when in clusters. The olivine in some instances is partly inclosed in augite, with anhedral forms. The groundmass consists of euhedral prismoid plagioclase, with central euhedral prismoid inclusion that has much lower refraction and is isotropic, apparently glass. The plagioclase prismoids have diverse arrangement. There is also much equant anhedral augite. less magnetite, and probably intersertal glass, but the microlites are crowded close...
Seite 334 - ... relation of the trachytes to the andesites is not certain, but the sanidine rock is probably the earlier. A very large part of the neovolcanic ejecta has fallen into water and been rearranged as tuffaceous plains. The...
Seite 159 - There are transitions between olivine-bearing pyroxene andesites and basalts in olivine, so here are basalts with the texture found in andesite, and others with textures not developed in andesites. No line can be drawn between these two groups of rocks and petrographers differ as to the classification of rocks intermediate between basalts and andesites. It happens that the lavas of Mayon and Taal volcanoes belong in part to these intermediate varieties, which may be called...
Seite 168 - ... of minute crystals that extend to various distances into the groundmass. They are needles and minute prismoids of augite in subparallel clusters. In places they seem to be granulated, or coarsely globulitic. With these prismoids are mingled opaque needles, or blades of what...
Seite 327 - Mariveles in Bataan and in Mindanao. In both of these rocks the olivine is present as small colorless crystals in part altered to red iddingsite. Basalt from the floor of the crater of Taal Volcano is dopatic...
Seite 235 - THE BATAN DIALECT AS A MEMBER OF THE PHILIPPINE GROUP OF LANGUAGES.
Seite 327 - Ans, with pronounced zonal structure, the narrow outermost zone being distinctly alkalic. The shapes are those of rectangular prismoid to equant crystals. In size they are seriate, that is, of different sizes from those of several millimeters to less than 1 millimeter. They are well twinned, in Carlsbad, albite and pericline manner. They contain many microscopic inclusions usually in the central portion of each crystal. There are fewer phenocrysts of hypersthene and augite, the former faintly pleochroic...