巻号一覧
12 巻 (1978)
- 4 号 p. 201-
- 3 号 p. 137-
- 2 号 p. 69-
- 1 号 p. 1-
12 巻, 2 号
選択された号の論文の10件中1～10を表示しています
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A. G. Rublev, Lev K. Levsky1978 年 12 巻 2 号 p. 69-74
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーThe loss of argon from various minerals by thermal event is semi-quantitatively discussed by a graphic method based on diffusion model. The way of estimating the primary age of a rock or rock massif is presented using real samples of Kidjimitskii and Vitimkanskii complexes in Zabaikalie.抄録全体を表示PDF形式でダウンロード (1760K) -
Georges Desaedeleer, E. D. Goldberg1978 年 12 巻 2 号 p. 75-79
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーVolatile elements from a basalt and from an obsidian were identified following slow neutron irradiation of the samples and a gamma ray spectroscopic assay of the room temperature distillate. The covariance of the enrichment factors for a variety of metals in the distillate and in atmospheric aerosols suggests that natural volatilization is responsible in part for the metal burdens in the atmosphere.抄録全体を表示PDF形式でダウンロード (1357K) -
Shizuo Tsunogai1978 年 12 巻 2 号 p. 81-88
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーThe vertical flux of chemical elements in the ocean is expected to be related to that of carbon from the settling model proposed by TSUNOGAI and MINAGAWA (1978) where chemical elements settle by forming large particles with organic material. The enrichment of concentration in the deep water is explained by introducing this vertical flux into a box model. The ratio of concentration for a constituent between the deep and surface waters is expressed by (1 + 2 × 10-5E)/(1 + 7 × 102/T) where E is the enrichment factor in the particle relative to seawater and T is the residence time in the ocean. The observed concentration ratios for various elements usually lies between the calculated ratios from E of suspended particles and of plankton and the settling particles from the surface to deep water are expected to be similar to suspended material rather than planktonic material. This model also predicts that analytical methods having errors less than 0.03% are necessary to detect enrichments for Na, Mg and K in the deep water and further that the material decomposing in the deep water has the following relationship; P : N : Si : C : O (oxygen used) = 1 : 14 : 60 : 110 : 276.抄録全体を表示PDF形式でダウンロード (2442K) -
Tore Prestvik, Elen Roaldset1978 年 12 巻 2 号 p. 89-100
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーFourteen rare-earth elements (REE) have been determined in metavolcanics and metagabbros from the island of Leka, Norway. The overall REE content of these rocks ranges from about 3 ppm, with strong light REE depletion, for the metagabbros to 170ppm with light REE enrichment, for porphyritic greenstones and pillow lavas. Based on regional geological features, lithology, and the REE abundances it is concluded that rocks of the island Leka constitute a part of an ophiolite complex.抄録全体を表示PDF形式でダウンロード (3225K) -
Lawrence M. Barron1978 年 12 巻 2 号 p. 101-105
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーCalculated binodal and spinodal relations for Ganguly's ternary Ca (Al, Fe, Cr) garnet model are used to calibrate an empiricial equation which permits the estimation of a binodal surface from its spinodal surface. The equation also works satisfactorily in the quaternary model of Ganguly and Kennedy for aluminous (Ca, Mn, Fe, Mg) garnets. The equation is generalized so that asymmetric multicomponent solutions can be similarly treated. The calculated ternary results in the Ca (Al, Fe, Cr) garnet model indicate that binodal tie-lines can be estimated from the properties of the spinodal.抄録全体を表示PDF形式でダウンロード (1517K) -
G. Sarazin1978 年 12 巻 2 号 p. 107-113
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーThe author built up a multivariable correlation method in order to explain stoichiometric relations observed between water soluble species and rock composition during the weathering process. This method allows to define four parameters of unequal importance. Two of them are closely related to the type of newly formed secondary mineral. Application in a complex volcanic environment gives quite satisfactory results.抄録全体を表示PDF形式でダウンロード (1994K) -
Shigeru Ohde, Yasushi Kitano1978 年 12 巻 2 号 p. 115-119
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーTo estimate the conditions of the protodolomite formation, laboratory syntheses from simple aqueous solutions have been carried out under normal temperature and pressure conditions. Protodolomites have been synthesized from CaCl2 + MgCl2 + (NaCl) + NaHCO3 solutions. This paper shows the concentrations of calcium and magnesium ions in the parent solution, which are required for the protodolomite formation. The synthesis experiment indicates that concentrated seawater is favorable to the protodolomite formation. That is, the high value of [Mg2+] / [Ca2+], and the high concentrations of sodium and chlorine ions in a parent solution are favorable to the protodolomite formation.抄録全体を表示PDF形式でダウンロード (1378K) -
Osamu Matsubaya, Hitoshi Sakai1978 年 12 巻 2 号 p. 121-126
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーThe isotopic fractionation factors in evaporation of water at 60° and 80°C were determined from the isotopic ratios of water under steady-state balance between inflow and evaporation. The results at 60° and 80°C are 1.0501 ± 0.0029 and 1.0431 ± 0.0022 for H2O/HDO and 1.0176 ± 0.0010 and 1.0156 ± 0.0008 for H216O/H218O, respectively. Oyunuma, isotopically the heaviest geothermal pond in Japan, is enriched by 40.3‰ in D/H and by 16.5 ‰ in 18O/16O, respectively, relative to its meteoric inflow and may be a natural example of such steady-state evaporation pans.抄録全体を表示PDF形式でダウンロード (1642K) -
Margarita Lopez M., Jose Perez R., Jaime Urrutia F., Surendra Pal, Dav ...1978 年 12 巻 2 号 p. 127-132
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーThis work is based on the study of three rocks dredged from the mouth of the Gulf of California. Chemical and petrographic analyses of these samples show their association as tholeiitic basalts. The three samples contain finely dispersed olivine and are composed mainly of basic glass and plagioclase microliths. They show chlorite too as evidence of alteration. Tectonic implications of their chemical and petrographic characteristics are briefly discussed.抄録全体を表示PDF形式でダウンロード (1651K) -
Akimasa Masuda1978 年 12 巻 2 号 p. 133-135
発行日: 1978/06/20
公開日: 2008/04/08
ジャーナル フリーPDF形式でダウンロード (819K)
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