Di dalam PELITA taha.p ke-II, tahun anggaran 1975/1976, yaitu pada bulan Ju.li 1975, Seksi Penelitian Geofisika. telah mulai melakukan penyelidikan Ke- ma.eneta.n Purba di pulau Lombok denga.n penga.mbilan oontolr ba.tuan terorienta.sisebanya.k 18 buah contoh ba.tuan (lampiran 1 ).
lt1.ksud penga.mbilan oontoh ba.tuan2 tersebut eela…
Preliminary results of a study of the distribution of Hg in 1000 soil samples from Yellowstone National Park show anomalous concentrations of Hg in soils from nearly all geothermal areas, but the magnitudes of the Hg anomalies differ significantly from one geothermal area to another. All Hg anomalies detected in Yellowstone are narrow, extend-ing …
Leo, G.W., Hedge, C.E. and Marvin, R.F., 1980. Geochemistry, strontium isotope data, and potassium-argon ages of the andesite-rhyolite association in the Padang area, West Sumatra. J. Volcanol. Geotherm. Res., 7: 139-156.
Quaternary volcanoes in the Padang area on the west coast of Sumatra have produced two-pyroxene, calc-alkaline ande…
Technical problems involved in the smelting of titaniferous iron ores are discussed in relation to the development of processing methods for commercial utilization of these ores. The methods to be used for producing steel from New Zealand ironsands are described briefly.
Paleomagnetic studies of lams from the island of Hawaii have established the following: (1) All lavas now exposed on the island are less than 1 million years old (Pleisto• cene). (2) The present absence of nondipole field components in the central Pacific ar…
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Deskripsi Fisik
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• Selesaai denga.n r-encana kerja Sek!:lL Penelitian Geofisika. Sub,( Direk_tor~t:Eksplorasi untuk melakuka.n penyelidikan kemagnetan Purba (Pa.leomagnetism) di Pulau-pulau Propinsi Nusatenggara, didalam tahun ~garan 1976/1977, t!. lah dilaksanakan penyelidikan kemagnetan Purba di Pulau Bali, da.n Pulau Nusapanida. Pekerjaan lapangan telah b…
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ISBN/ISSN
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Deskripsi Fisik
Tidak ada gambar, tidak ada peta,cover berwarna bi
The developme~ of economic techniques of mining and concentrating taconite (fine• grained, Ierruginous jasperoids) led to the introduction of the iron-ore pellet, which is now becoming the major form in which iron is introduced into the furnace. The tre• mendous reserves of magnetic taconites of the…
IN VIEW OF their high hardness, chemical inertness and excellent mechanical behavior at high temperatures, ceramic oxides (in particular, alumina) offer excellent advantages over high speed steels and carbides for cutting tool applications. 1-6 A disadvan• tage of…
Fluid inclusions in quartz phenocrysts of quartz porphyry, quartz veinlets cutting quartz porphyry, and quartz and sphalerite in ores, were studied by the heating-stage and freezing-stage methods. Polyphase fluid. inclusions carrying transparent cubic crys• tals were especially found …