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Ditemukan 45 dari pencarian Anda melalui kata kunci: subject="Chemical"
Geochemical practice in the exploration of soil and gas
Nonnally oil or gas occupy only a small fraction of the total pore -1. volume in the subsut!l:-ece; the rest of the spJlce contains water_.Sometimes the water associated with the oil is fresh, but usually it is salty. In general, the deeper and older a rock is, the saltier the water it contains. Thr origin of oil-field brines is not well understoo…
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- Deskripsi Fisik
- 34 p. : ill. ; 21 cm
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- No. Panggil
- PMB LU 1976 - 4
Unit 4 geochemical reactions unit 5 geochemical cycles unit 6 applications of…
In the first place, most chemists work with materials whose chemical formulae are fairly simple, and in which the ratio of the numbers of atoms of one kind to the numbers of atoms of another are small integers, or fractions of small integers. Among such compounds are NaCl, Al203 and Si02• By contrast, the geochemist often stud…
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- Deskripsi Fisik
- 38 p. : ill. ; 21 cm
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- No. Panggil
- PMB LU 1985 - 15
Results of the 1976 orientation stream sediment geochemical survey in north-e…
Orientation studies indicate that stream-sediment geochemistry is a potentially useful exploration tec~ique in the Kepala Burung region of Irian Jaya, Indonesia. Previously located uranium anomalies and small zones of known base-metal sulphide. mineralisation, are reflected in anomalous concen• trations of these elements in•the stream sedim…
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- Deskripsi Fisik
- 18 p. : ill. ; 21 cm
- Judul Seri
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- No. Panggil
- PMB LU 1977 - 5
Geochemical prospecting for mineral deposits
The recognition of the nature of primary and secondary dispersion halos and trains associated with mineral deposits. Although haloesand trains were known for centuries to be associated with metal deposits, the work carried out in the U.S.S.R and Scandinavia in the 1930's and early 1940's systematised the data and permitted it to be used in the most …
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- Deskripsi Fisik
- 57 p. : ill. ; 21 cm
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- No. Panggil
- PMB 622.13 REA g
Geochemical Analytical Standards
Numerous and diverse errors are encountered in applied geochemistry from field collection, sample preparation and chemical analysis. Typographic errors are also involed but frequently neglected. These errors must be controlled and monitored and the quality of the results checked before the results are processed and displayed on maps. This to ensure …
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- Deskripsi Fisik
- 47 halaman, tidak berwarna, cover biru muda
- Judul Seri
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- No. Panggil
- PMB LU 1989 - 8
Geochemical prospecting for petroleum and natural gas deposits
Geochemical prospecting (or exploration) methods for petroleum and natural gas deposits at and near the surface of the ground and the offshore area have not achieved the popularity of geophysical methods. Geochemical methods have been used widely in both the united states and the soviet union, and many new discoveries have been reposrted from these …
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- Deskripsi Fisik
- 61 p. ; 18 cm
- Judul Seri
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- No. Panggil
- PMB LU 1975 - 32
International symposium on lower rank coal ( buku 2)
Macerals are the microscopically recognizable individual constituents of coal and depending on their quantitative participation and their association, they control the chemical, physical and technological properties of a coal of a given rank. In this new classification (ICCP system 1994) the maceral group has been revised from its previous classific…
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- Deskripsi Fisik
- ill. ; 21 cm
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- No. Panggil
- PMB 02 - 2006 Prosiding
Geochemical exploration in deeply weathered terrain
As Pointed out by Boyle (1974) in his comprehensivecoverage of element associations of mineral deposits, rarely does a single element concentrate in the Earth's crust• to form a mineral deposit. Generally mineral deposits consist of a suite of elements which have been concentrated because of certain intrinsic chemical properties which depend esse…
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- ISBN/ISSN
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- Deskripsi Fisik
- 181 p. : ill. ; 21 cm
- Judul Seri
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- No. Panggil
- PMB 622.13 MON g
Limitations of correlation and regression analysis in geochemical exploration
Published multi-element stream-sediment exploration geochemical data from new brunswick are used to illustrate some pitfalls of correlation and regression. Large matrics of correlation coefficients. are easly mass-produced.These coefficient are susceptible to suprious values, clustering of samples and the effect of other variables on the relation un…
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- ISBN/ISSN
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- Deskripsi Fisik
- 5 p. ; 21 cm
- Judul Seri
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- No. Panggil
- PMB LU 1976 - 25
Ethane extraction for petrochemical feedstock
Preliminary studies have shown that a petrochemical project for the manufacture of ethylene and selected ethylene derivatives using an ethane feedstock extracted from natural gas to be produced from the Arun field would b…
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- 21 cm
- Judul Seri
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- No. Panggil
- PMB LU 1975 - 26
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