著者 岡山大学温泉研究所|
発行日 1974-03-25
出版物タイトル 岡山大学温泉研究所報告
43巻
資料タイプ その他
著者 岡山大学温泉研究所|
発行日 1974-03-25
出版物タイトル 岡山大学温泉研究所報告
43巻
資料タイプ その他
JaLCDOI 10.18926/21236
タイトル(別表記) Phlogopites and coexisting pargasites in wehrlite from the northern Kanto mountains, central Japan
フルテキストURL pitsr_043_001_013.pdf
著者 田崎 耕市| 猪俣 道也|
抄録 Coexisting interstitial phlogopites and pargasites in iron rich wehrlite from the northern Kanto mountains were studied. The textural relations between those interstitial hydrous minerals and major constituent minerals, such as olivines and clinopyroxenes suggest the crystallization of the former from the intergranular residual liquids. The modal amounts of phlogopites in wehrlite are less than 1%, and that of pargasites range from 2 to 5%. Microprobe analyses have been carried for those hydrous minerals and the major constituent minerals. namely, olivine, clinopyroxene and idiomorphic zoned chromite. Olivines in wehrlite from the northern Kanto mountains have rather iron-rich nature and range from Foso to Fo(80) and those coexisting with the hydrous minerals are Fo(82.5) in average. Clinopyroxenes from mica bearing wehrlite contain about 2.5% Al(2)O(3). 17% MgO and 5.5% FeO. Tentative cation per cent of Ca, Mg and Fe are calculated as Ca(42.6) Mg(48.1) Fe(9.3) in average. The present probe analyses show high magnesian nature of the interstitial phlogopites. In addition, these phlogopites are conspicuous by their high TiO(2) content ranging from 4.6 to 5.2%. Mg/Mg + Fe versus Ti relation plotted in Fig. 4 revealed that the present phlogopite are similar to that of the alkaline pyroxenite nodules from the Lashaine volcano, northern Tanzania. Pargasites in mica bearing wehrlite are also rich in TiO(2) (3.0~4.7%), whereas pargasitic common hornblende from hornblendite or gabbro are rather low in TiO(2) (0.9~1.7%). Mg/Mg+Fe+Mn versus Ti relations of amphiboles illustrate that Ti contents increase with decrease of Mg/Mg+Fe +Mn. Two different increasing trend for Ti conten t are also noticed. Idiomorphic chromites show distinct compositional variation from core to rim. Total FeO increases about 16% at rim, whereas TiO(2), Al(2)O(3) and MgO decrease at the rim. Possible crystallization scheme of those hydrous minersls is proposed in Fig. 10, where the maximum stability limits of phlogopite and hornblende are shown with the curve for begining of melting of basalt. Separation of liquid fraction from cumulate phase with a small trapped intergranular liquid might occur at point A. The liquid fraction then might move upward through the course II. In cumulate phase, intergranular liquid might crystallize pargasitic amphibole by the reaction with olivine and clinopyroxene through the course I in Fig. 10. Intergranular liquid might decrease with production of amphiboles and K(2)O might concentrate in residual liquid. At final stage of crystallization, residual liquid rich in K(2)O might crystallize as phlogopite by the reactions with olivine. Decrease of Ti02 content at the nm of idiomorphic chromite might be related to the formations of Ti-rich hydrous minerals.
出版物タイトル 岡山大学温泉研究所報告
発行日 1974-03-25
43巻
開始ページ 1
終了ページ 13
ISSN 0369-7142
言語 Japanese
論文のバージョン publisher
NAID 120002311004
著者 岡山大学温泉研究所|
発行日 1974-03-25
出版物タイトル 岡山大学温泉研究所報告
43巻
資料タイプ その他
著者 岡山大学温泉研究所|
発行日 1974-03-25
出版物タイトル 岡山大学温泉研究所報告
43巻
資料タイプ その他
著者 岡山大学温泉研究所|
発行日 1974-03-25
出版物タイトル 岡山大学温泉研究所報告
43巻
資料タイプ その他
JaLCDOI 10.18926/21228
タイトル(別表記) Continuous in-vIvo measurement of the brain tissue and the ischemic muscle gas tension using MEDSPECT, MS-8
フルテキストURL pitsr_043_029_036.pdf
著者 川上 俊爾| 山根 義久| 野一色 泰晴| 古元 嘉昭| 寺本 滋| 妹尾 嘉昌| 金子 克也| 杉本 誠起| 高橋 俊二郎|
抄録 I MEDSPECT is a medical mass spectrometer for continuous in-vivo measurement of tissue, blood and respiratory gases. Interfacing catheter for tissue in measurement has Teflon membrane. The permeability and perfusion rate for various gases through its membrane varied with temperature. The temperature coefficient of Teflon catheter in the range of 15℃-40℃ is approximately constant with -2% of correction per degree for oxygen and carbon dioxide. Linear correlation was confirmed experimentally. II The brain tissue gas tensions were measured in ten dogs with intra-venous anesthesia at normothermia and deep hypothermia using perfusion cooling, including circulatory arrest for 30 minutes at 20°C of cerebral temperature. On average, the brain tissue P(O2) was 15mmHg in normothermia when the arterial P(O2) showed 95mmHg and the brain tissue P(CO2) was 49mmHg when the arterial PC02 showed 30mmHg. The brain tissue carbon dioxide tension gradually decreased by cooling and increased during circulatory arrest for 30 minutes; from 45mmHg to 72mmHg. The brain tissue oxygen tension increased during cooling from 15mmHg to 41mmHg and decreased in the circulatory arrest; from 41mmHg to 36mmHg. III The ischemic muscle gas tension was measured in a 22-year-old man, who was suffered from thromboangiitis obliterans bilaterally, and had the popliteal autovein bypass surgery 3 months ago. Control oxygen tensions in the both anterior tibial muscles showed about the same; 35mmHg and 36mmHg respectivelly, and the P(O2) of the non-operated side showed remarkable low level of 18mmHg as compared with the side of arterial reconstruction surgery after 5-minutes ankle exercise.
出版物タイトル 岡山大学温泉研究所報告
発行日 1974-03-25
43巻
開始ページ 29
終了ページ 36
ISSN 0369-7142
関連URL http://eprints.lib.okayama-u.ac.jp/21235
言語 Japanese
論文のバージョン publisher
NAID 120002311036
JaLCDOI 10.18926/21205
タイトル(別表記) Hydrogen and oxygen isotopic ratios of thermal and mineral springs in Arima area
フルテキストURL pitsr_043_015_028.pdf
著者 松葉谷 治| 酒井 均| 鶴巻 道二|
抄録 Saline waters of thermal and mineral springs in Arima area, at Takarazuka, and in Ishibotoke area of Kawachinagano City indicate wide ranges of δD and δ(18)O values (Table 1). Excellent linearity exists between the δD and δ(18)O values (Fig. 1) and between the δ(18)O value and the chloride concentration (Fig. 2). These facts as well as the chemical evidence of the previous investigators strongly support the view that Arima springs are admixtures of a single deep brine and local ground water (TSURUMAKI, 1964). The deep brine may have the δ(18)O value of +8.0~+8.5‰, the δD value of -25~-30‰, and the chloride concentration of 1.20~1.25 eq/l, which were estimated from the water of the maximum salinity so far reported. Because the thermal and mineral springs in Arima area closely associate with the upper Cretaceous granitic rocks, and the estimated δ(18)O value of the deep brine is similar to a value of water in isotopic equilibrium with those granitic rocks at 500~600℃, the deep brine of Arima might have been the magmatic water of those granitic rocks. The mineral springs at Takarazuka and in Ishibotoke area also show the similar linearity among Cl(-), δ(18)O and δD to those in Arima area. Therefore it is assumed that the mineral springs at Takarazuka may be of the same origin as that in Arima area, and the mineral springs in Ishibotoke area might have been the fluid associated with Ryoke metamorphic rocks. Alternatively, the deep brine in Arima area may be isotopically and chemically similar to the saline formation waters in Illinois basin (GRAF et al., 1966). The high δD values and salinities of those formation waters were attributed to the isotopic and chemical fractionation during the passage of water through sediments. The deep brine in Arima area may be genetically similar to those saline formation waters. If such a saline water could have formed in Osaka basin, it is not surprising to find out the similar brines at Arima and Ishibotoke which are the northwestern and southeastern rims of the basin, respectively. At the present, it cannot be answered which of these two models is more probable. Further studies on other saline springs fluid inclusions of Cretaceous granitic rocks may be useful in order to solve this problem.
出版物タイトル 岡山大学温泉研究所報告
発行日 1974-03-25
43巻
開始ページ 15
終了ページ 28
ISSN 0369-7142
言語 Japanese
論文のバージョン publisher
NAID 120002310971