All issues
Volume 3 (1969 - 1970･･･
- Issue 4 Pages 187-
- Issue 2-3 Pages 87-
- Issue 1 Pages 1-
Volume 3, Issue 2-3
Displaying 1-10 of 10 articles from this issue
- |<
- <
- 1
- >
- >|
-
Kikuo Kato1969 Volume 3 Issue 2-3 Pages 87-97
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSDissolved silica is removed from lake water through its co-precipitation with hydrated oxides of iron and manganese. Dissolution of hydrated oxides of iron and manganese (orange floccules) including co-precipitated silica in the bottom sediment of lake causes a simultaneous increase in the dissolved silica content with increase in the dissolved iron and manganese contents of hypolimnionic water. The behavior of dissolved silica is thus controlled by the oxidation-reduction cycle in lake water.View full abstractDownload PDF (4922K) -
Yasushi Kitano, Satoru Kanamori, Kikuo Kato, Nobuko Kanamori, Ryuma Yo ...1969 Volume 3 Issue 2-3 Pages 99-115
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSThe Juneau Icefield area is thought to be one of the best locations for the geochemical study on the migration of chemical elements through the hydrosphere. In this report, the migration of chemical species, Na+, Ca2+, Mg2+, Cl-, SO42-, HCO3-, molybdate-reactive silica and borate-boron, is discussed. The following facts were pointed out: (1) the major chemical species other than calcium and bicarbonate ions in saline water of the area mainly come from sea water, (2) calcium and bicarbonate ions in large amount are supplied to saline water by dissolution of carbonate material contained in muddy sediments which are formed by glacial erosion, (3) removal of soluble silica must be assumed when muddy fresh water from glaciers mixes with sea water to form saline water, (4) the silica content of suspended material decreases with increasing salt content of saline water, and (5) the ratio of borate-boron concentration to chloride concentration is higher in interstitial water than in saline water.View full abstractDownload PDF (6592K) -
Bokuichiro Takano1969 Volume 3 Issue 2-3 Pages 117-126
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSThe behavior of barium and lead in Tamagawa Hot Spring water has been discussed. Compared with barite of hydrothermal origin, barite from hot spring water is singular in its lead content. This fact was elucidated in terms of lead chlorocomplex formation in the spring water from which barite precipitates. The experimental verification has been attempted on the deposition of this mineral.View full abstractDownload PDF (4653K) -
Shohei Banno, Bruce W. Chappell1969 Volume 3 Issue 2-3 Pages 127-134
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSThe concentrations of Rb, Sr, Y, Pb and Th of Japanese Paleozoic slates were determined by means of X-ray fluorescent analysis. Among the analyzed elements, Rb shows a good correlation with K, but other elements do not appear to have clear systemmatic relations with major elements. Local variation in K/Rb ratio was not detected. The average K/Rb ratio is 251.View full abstractDownload PDF (3166K) -
Douglas G. Brookins1969 Volume 3 Issue 2-3 Pages 135-140
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSA possible age of 745 ± 100m.y. (using 50b.y. = half life of 87Rb) has been determined for pyrope from the Stockdale kimberlite assuming an upper mantle initial 87Sr/86Sr ratio of 0.702 ± 0.001. Despite the large error associated with this age it clearly demonstrates that the pyrope crystallized long before its final emplacement which is set at ≤ 100 m.y. Allowance for crustal and mantle contamination and other sources of error have been carefully considered in this determination.View full abstractDownload PDF (2814K) -
Minoru Kusakabe1969 Volume 3 Issue 2-3 Pages 141-151
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSThe analytical results of volcanic gases of Nasudake, Tochigi Prefecture, Japan were given. The average atomic composition of gases of Nasudake, Showashinzan, Satsuma I.vojima and Kilauea were calculated on the basis of the reported data. Variation in the atomic composition was the smallest at Showashinzan, whereas other three volcanoes showed greater fluctuation. This suggests that gases of the three volcanoes other than Showashinzan are subjected to chemical alteration in their way to the earth's surface. The change in equilibrium composition of gases with temperature was calculated based on the average atomic composition of Showashinzan gases, and was compared with the observed result. Agreement between them was fairly well, suggesting that Showashinzan gases are of magmatic origin and in a closed condition.View full abstractDownload PDF (5107K) -
Akimasa Masuda1969 Volume 3 Issue 2-3 Pages 153-160
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSSeeing from the theory advanced by MASUDA and MATSUI (1966), the tholeiite having a slightly upward convex, chondrite-normalized lanthanide pattern shows an apparent uniform enrichment of all the lanthanides. This enrichment factor is understood, at least partially, to have been brought about by the partial melting of the upper mantle material. The alkali olivine basalt having a logarithmically linear lanthanide pattern does not show a substantially high, uniform enrichment of lanthanides. It is inferred that the tholeiite and the alkali olivine basalt are derived from quite different source materials. The presence of two different types of source materials for magmas is considered to be natural in light of the model presented by us.View full abstractDownload PDF (4019K) -
Chuzo Iida, Makoto Noshiro, Kozo Muramatsu, Kazuo Yamasaki1969 Volume 3 Issue 2-3 Pages 161-169
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSConcentrations of cobalt, nickel, chromium and vanadium in a composite dike and a dike at Tateiwa, north Izu were determined by quantitative spectrochemical analysis. Their distribution in the central and marginal parts of each dike was discussed. The concentrations of nickel and cobalt are highest at the boundary of aphyric and porphyritic portions in the composite dike, and vanadium shows maximum concentration in the marginal part which is the boundary zone between each dike and the surrounding scoriae.View full abstractDownload PDF (3392K) -
Hideo Higuchi, Kenji Tomura, Naoki Onuma, Hiroshi Hamaguchi1969 Volume 3 Issue 2-3 Pages 171-180
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSConcentrations of rare earth elements in eight U. S. Geological Survey standard rocks, G-1, W-1, G-2, GSP-1, AGV-1, BCR-1, PCC-1 and DTS-1 are reported. The rare earth elements were determined by neutron activation analysis with a lithium-drifted germanium detector after chemical group-separation. Rare earth abundance data in PCC-1 and DTS-1 are the first available ones on these rocks.View full abstractDownload PDF (3878K) -
Ricardo M. Pytkowicz1969 Volume 3 Issue 2-3 Pages 181-184
Published: 1969
Released on J-STAGE: April 08, 2008
JOURNAL FREE ACCESSAt present there are two types of equilibrium constants in use for chemical reactions in concentrated multi-electrolyte solutions of geochemical and biochemical interest such as seawater, brines, and body fluids; thermodynamic and apparent (quasi-stoichiometric) constants. It will be shown that, in general, there is not enough information available for the application of thermodynamic constants to such media, because of ion association and pH changes, and that apparent constants should be used at present.View full abstractDownload PDF (1483K)
- |<
- <
- 1
- >
- >|