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 …
Data of the fluid inclusion studies•which have been carried out up to date in Japan, are briefly summarized, and the result is discussed from the standpoint of mineral exploration. Homogenization tempera• tures of fluid inclusions in vein-type deposits of Tertiary and Late Cretaceous age, range between 130° and 360°C, but th…
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…
The Tertiary volcano-plutonic arc exposed along the west coast of Sumatra can be traced to the south coast of Java. The corresponding subduction zone can be found in the islands west of Sumatra and the submarine ridge south of Java.
The Late Cretaceous plutonic belt of Sumatra does not continue to Java but passes north of it,…
The chemical properties of the country rocks and sulfide ores of the bedded cupriferous .pyrite deposits in the Tenryu River basin were determine1. Thirty-seven rock samples were
chemically analyzed for major elements and 41 were spectrochemically determined for minor …
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.
Katili, J .A., i 973. Geochronology of West Indonesia and its implicatioti on plate tectonics: .Tectono:.physics, 19: 195-212. The results of radiometric dating of granitic rocks around Kotanopan near the west coastof-Ce0ntr~l umatra indicate an average age of 45 million years.
Granites from the Lissi Mass in t…
OR many years considerable de•
rnarid has existed for paints that
;reduce textured rather than conven• tional smooth films on ceilings and in• terior walls. By virtue of their texture, such paints have been able to serve r::e extremely useful purpo…