巻号一覧
58 巻, 5 号
選択された号の論文の4件中1～4を表示しています
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秋月 瑞彦1967 年 58 巻 5 号 p. 161-169
発行日: 1967/11/05
公開日: 2008/08/07
ジャーナル フリーIn order to study the crystallographic relationship between parent (talc, chlorite and muscovite) and product structure, the transformation was carried out in stages within an electron microscope by condensing the electron beam. The process was monitored by electron diffraction.
In another experiment, these materials were heated slowly and rapidly in an external vacuum furnace. The results of the electron bombardment experiment and the heating experiment were then compared.
The enstatite obtained by electron bombardment of talc shows similar diffraction diagram with that obtained by slow heating of talc. On the other hand, the diagram differs markedly from that obtained by rapid heating of talc. The olivine crystal formed from chlorite by electron bomharmdent is larger than that formed from the same material by heating far 4 hours at 1000°C.
These results suggest that the transformation obtained by electron bombardment in the electron microscope are essentially due to ionization rather than heating.
This technique must be highly applicable to the identification of some clay minerals.抄録全体を表示PDF形式でダウンロード (2063K) -
上田 健夫1967 年 58 巻 5 号 p. 170-179
発行日: 1967/11/05
公開日: 2008/08/07
ジャーナル フリー筆者は1953年モナズ石の結晶構造を公表した。この構造ではセリウム原子は9配位であるが, 9個の酸素原子は不規則配列をとっている。今回これらの酸素原子がCe(OH)3やCeCl3に見られるような規則配列をとっているのではなかろうかという見地から,この構造を再研究した。結果はやはり不規則配列のものが得られたが,各原子の位置が前回の位置から多少ともずれた。しかし前回得た構造と大差なく,またMooney (1948)の結果とも基本的には一致している。抄録全体を表示PDF形式でダウンロード (709K) -
1. 三滝ソレアイト青木 謙一郎1967 年 58 巻 5 号 p. 180-187
発行日: 1967/11/05
公開日: 2008/08/07
ジャーナル フリーThe Mitaki tholeiite series of Sendai which consists of late Miocene tholeiite and tholeiitic andesite occurs as lava flows ranging from 5 to 30min thickness and as dyke swarms ranging from O.5 to 5.7 min width. Petrographically, the series is characterized by abundance of large anorthite phenocryst which reaches up to 35 per cent by volume. The groundmass is composed of labradorite, cristobalite, pigeonite, augite, and iron ore. The tholeiite is distinguished from the tholeiitic andesite by the following characteristics: (1) smaller amount of interstitial cristobalite, and (2) higher pigeonite/augite ratio. Six rock samples have been analyzed chemically. Those having the chemical composition of typical tholeiite series are notably rich in total iron and CaO and very poor in alkalis. This shows strong iron enrichment at the middle stage of fractionation.抄録全体を表示PDF形式でダウンロード (467K) -
主としてハロゲン類の分布について磯村 泰治1967 年 58 巻 5 号 p. 188-200
発行日: 1967/11/05
公開日: 2008/08/07
ジャーナル フリーThe chemical analyses of seventy-eight samples of brine water in the Kujukuri gas field were carried out, and compared formationally and regionally.
At Mohara and Otaki districts, the ratios of I-/Cl- and Br-/Cl- are higher in the water of the lower Otadai and the Kiwada formations, than those of the overlying Umegase, and the underlying Ohara, Namihana and Katsuura formations. Regionally these ratios of the waters of the Kiwada formation decrease in the direction to the North. This fact reveals the coincidence with the tendency of thinning out of the formation to the same direction.
If we assume that dI -and dBr- are the enriched portion of I- and Br- in the brine water after the deposition of sediments, the ratio of dI-/dBr- remains nearly constant as 1.5_??_1.9 in this field. This fact suggests that the sources of I- and Br- are derived from the same materials, which may be the algae having high concentrations of the iodine and the bromine.
The high values of I-/Cl- and Br-/Cl-in the water of the muddy “Kiwada” formation compared to those of the sandy ones (“Umegase”, “Ohara”, etc.) also show that there were enrichment of the organic matters to the Kiwada formation at the time of deposition.抄録全体を表示PDF形式でダウンロード (858K)
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