result 3672 件
| JaLCDOI | 10.18926/ESR/13928 |
|---|---|
| FullText URL | ESR_3_17.pdf |
| Author | Suzuki, Shigeyuki| |
| Abstract | In eastern Chugoku area, Paleogene deposits have not been recognized until fission-track dating of so called "Mountain Gravels" was carried out (Suzuki et al. 1995). Two sedimentation events in Paleogene time (27Ma and 34-35Ma) are inferred by the F-T dating Major lithology of the Paleogene deposits in the study area is graved which is mainly composed of subrounded to rounded cobbles. The "Mountain Gravels" were previously thought to be lower Quaternary deposits. The "Mountain Gravels" is associsted with coal bearing mud, sand, gravel and breccia deposits. The breccia deposits is distributed sporadically between the "Mountain Gravels" and basement rocks. The deposits are mainly composed of poorly sorted breccia and associated granitic sands. It is inferred that the breccia deposits are talus deposits. |
| Keywords | Paleogene breccia talus deposits fission-track dating |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 1996-09-20 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 17 |
| End Page | 24 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310338 |
| JaLCDOI | 10.18926/ESR/13899 |
|---|---|
| FullText URL | ESR_7_27.pdf |
| Author | Henmi, Chiyoko| Kusachi, Isao| Kagetama Tatsuya| |
| Abstract | The clinopyroxenes of the hybrid rocks from the Hirata outcrop, Kushiro, Hiroshima Prefecture, Japan are grouped into(1)diopside, (2)aegirine, and (3)zoned pyroxene. The diopside occurs as isolated crystals enclosed in feldspars. The aegirine occurs along with late hydrous minerals in pore spaces. The zoned pyroxenes occur as discrete cryatals with wide rims growing interstitially between feldspar laths and show a continuous composition-al trend from diopside through hedenbergite and aegirine-augite to aegirine or titanian aegirine. The pyroxenes enclosed in feldspars and the cores of the zoned crystals have nearly same chemical composition. The late stage pyroxenes are characterized by extreme enrichment of sodium and sometimes titanium. The titanian aegirines studied hera are characterized by the predominance of the Na(Fe2+, Mg)0.5Ti0.5Si2O6 component over other Ti-bearing pyroxene components. The compositional trend of clinopyroxenes from the Hirata hybrid rocks follows a typical trend of peralkalne rocks. The peralkaline neture of the Hirata samples is a result of compositional change of magma accompanied by the metasomatic skarn formation. |
| Keywords | aegirine aegirine-augite diopside pyroxene hybrid rock skarn |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2000-09-20 |
| Volume | volume7 |
| Issue | issue1 |
| Start Page | 27 |
| End Page | 34 |
| ISSN | 1340-7414 |
| language | English |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310313 |
| Author | Yamagata, Koichi| |
|---|---|
| Published Date | 1993-08 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Yui, Jiro| |
|---|---|
| Published Date | 1994-12 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/ESR/13863 |
|---|---|
| Title Alternative | Increase Rate of fCO2 in the Eastern Equatorial Pacific Ocean |
| FullText URL | earth_science_reports_011_1_15.pdf |
| Author | Kondo, Fumiyoshi| Tsukamoto, Osamu| Watanabe, Shuichi| |
| Abstract | In the Eastern Equatorial Pacific Ocean, increase rates of fCO2 in the air and the ocean were evaluated using the CDIAC data set. The fCO2 in the air was increasing about 1.28μatm/year during 1957-1995. This result is almost same as the rate at the Mauna Loa, Hawaii in Tropical Pacific Ocean. The increase rate of fCO2 in the seawater was estimated as 1.64μatm/year. In this study it is found that the increase rate of fCO2 in the seawater is the almost same as that of fCO2 in the air. This reault supports the result on the snapshot analysis of Takahashi et al. (1983) in thr North Atlantic Ocean during 1958-1982. It is smaller than the result including seasonal variation in the Eastern Subtropical Pacific Ocean. These reault indicated that the anthropogenic CO2 in the air has affected fCO2 in seawater through CO2 gas exchange between the atmosphere and the ocean. It is found that fCO2 in the seawater has increased in the Eastern Equatiorial Pacific Ocean in spite of the large CO2 source region. It suggested that CO2 source potential has not changed in this ocean durung 1957-1995. |
| Keywords | fCO2 Increase Rate Eastern Equatorial Pacific Ocean E1 Nino La Nina |
| Publication Title | Okayama University Earth Science Report |
| Published Date | 2004-12-31 |
| Volume | volume11 |
| Issue | issue1 |
| Start Page | 15 |
| End Page | 22 |
| ISSN | 1340-7414 |
| language | Japanese |
| Copyright Holders | 岡山大学地球科学研究報告編集委員会 |
| File Version | publisher |
| NAID | 120002310498 |
| Author | Murakami, Takuro| |
|---|---|
| Published Date | 1994-10 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| Author | Obayashi, Naotsugu| |
|---|---|
| Published Date | 1993-08 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Kimura, Kazuhi| |
|---|---|
| Published Date | 1994-10 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| Author | Iwaya, Kazuo| |
|---|---|
| Published Date | 1994-10 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| Author | Fujii, Soichiro| |
|---|---|
| Published Date | 1994-02 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue1-2 |
| Content Type | Journal Article |
| Author | Suwaki, Toshimitsu| |
|---|---|
| Published Date | 1994-08 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Murakami, Takuro| Ohtsuka, Aiji| Yamana, Seizo| |
|---|---|
| Published Date | 1996-10-31 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume108 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| Author | Kawata, Noriko| |
|---|---|
| Published Date | 1994-02 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue1-2 |
| Content Type | Journal Article |
| Author | Kondo, Hidenori| Okitsu, Teru| Kondo, Masami| Tsuge, Hiromu| Orita, Kunzo| |
|---|---|
| Published Date | 1994-08 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Murakami, Takuro| Ohtsuka, Aiji| |
|---|---|
| Published Date | 1996-02-29 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume107 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| Author | Saito, Tomohiko| |
|---|---|
| Published Date | 1996-08-31 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume108 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Chikakiyo, Hirokazu| |
|---|---|
| Published Date | 1996-08-31 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume108 |
| Issue | issue7-8 |
| Content Type | Journal Article |
| Author | Ochi, Hideaki| |
|---|---|
| Published Date | 1998-06-25 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume110 |
| Issue | issue1-6 |
| Content Type | Journal Article |
| Author | Fukuda, Tomoko| |
|---|---|
| Published Date | 1996-06-29 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume108 |
| Issue | issue3-6 |
| Content Type | Journal Article |
| Author | Endo, Atsushi| |
|---|---|
| Published Date | 1995-08-31 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume107 |
| Issue | issue7-8 |
| Content Type | Journal Article |
