Search Results 1-20 of 71

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  • Geohistorical consideration on organic maturation index of undated sedimentary rocks scattered in the northern foot of Izumi Mountains, southern Osaka Prefecture, Japan  [in Japanese]

    清家 一馬

    大阪府南部の和泉山脈北麓の父鬼川、牛滝川、および槇尾川に小規模に露出する3つの堆積岩 について,ロックエバル分析とビトリナイト反射率の2種類の方法で有機物熟成度を測定した.2つ の地質単元の熟成段階は明確に区別される.牛滝川砕屑岩の有機物熟成段階は和泉層群と同程度の カタジェネシス帯・過熟成であり,深部への埋積による被熱があったと考えられる.甘南備層の有 機物熟成段階はダイアジェ …

    大阪市立自然史博物館研究報告 = Bulletin of the Osaka Museum of Natural History (72), 153-159, 2018-03-31

    IR  DOI 

  • <b>A Study on Estimation of Ground Effective Thermal Conductivity as </b><b>Probability-Weighted Average </b>  [in Japanese]

    SAKATA Yoshitaka , KATSURA Takao , NAGANO Katsunori

    … <p>This study proposes an indirect method to estimate the ground effective thermal conductivity in the formation of a depth over several tens to one hundred meters by averaging probability-weights of all soil/rock types. Thermal response test results are used as the in-situ measurements for determining a set of the individual effective thermal conductivities in the least square. The probability values of all soil/rock types ar …

    Journal of the Geothermal Research Society of Japan 40(1), 33-44, 2018

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  • Numerical simulation study on mitigation of the pressure build-up in the geological formation during injection of CO<sub>2</sub>  [in Japanese]

    FUJITA Claudia , HIRATSUKA Yusuke , YAMAMOTO Hajime , NAKAJIMA Takahiro , XUE Ziqiu

    <p>二酸化炭素回収貯留技術(CCS)の大規模化,商用化に向けた課題の一つとして,CO<sub>2</sub>の圧入に伴って上昇する貯留層内圧力の問題がある。CO<sub>2</sub>貯留層は堆積構造の不均質性などによって有限な体積を有すると考えられるため,大量のCO<sub>2</sub>を圧入すると次第に貯留 …

    Journal of Groundwater Hydrology 59(3), 229-237, 2017

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  • Interactions between lithosphere, hydrosphere, and biosphere through the hydrothermal fluid circulation system beneath the seafloor  [in Japanese]

    Ishibashi Jun-ichiro

    … Geochemical flux transported into the deep ocean by hydrothermal plumes affects chemical and biological processes in the hydrosphere. … Formation of mineral deposits from the hydrothermal fluids leads concentration of specific metal elements resulting from long duration of hydrothermal activity. … As hydrothermal vent sites have been discovered ubiquitously in various geologic settings, their diversity especially in geochemical aspects becomes more noticeable and interesting.</p> …

    Chikyukagaku 51(3), 103-118, 2017

    J-STAGE 

  • Submarine fan turbidites as hydrocarbon reservoirs::Understanding depositional and petroleum system variation and analytical methodology  [in Japanese]

    Takano Osamu

    … "Hyperpycnal flow" is a newly recognized flow mechanism to transport a certain amount of terrestrial organic materials into the deep sea territory, resulting in the formation of high TOC source and reservoir rocks of turbidites. …

    Journal of the Japanese Association for Petroleum Technology 81(1), 7-21, 2016

    J-STAGE 

  • Geomorphological View of the Environmental History of Mars and Candidate Habitable Environments  [in Japanese]

    MIYAMOTO Hideaki , KOMATSU Goro , DOHM James , HEMMI Ryodo , USUI Tomohiro , YAMAGISHI Akihiko

    …  Ancient Mars is now considered to have had an environment somewhat similar to that of Earth in terms of the existence of large bodies of water, a wide range of surface oxidation states, an active dynamo and associated magnetic field, magmatism and tectonism which includes mountain building and basin formation, and appearances of variety of chemical components potentially building blocks of life. … (2) being the widest and deepest part of the Valles Marineris and thus a major catchment basin of Mars since its formation; …

    Journal of Geography (Chigaku Zasshi) 125(1), 171-184, 2016

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  • Granular experiments of thrust wedges: Insights relevant to methane hydrate exploration at the Nankai accretionary prism

    Yamada Yasuhiro , Baba Kei , Miyakawa Ayumu , Matsuoka Toshifumi

    … Expulsion of formation fluids is significant during the prism accretion process, and the migration of these methane-bearing fluids exerts a strong control on the accumulation of hydrates. … Our study modeled the accretion process by using two granular methods that approximated the geologic body as an assemblage of particles: (1) analog experiments using granular materials, and (2) a numerical simulation based on the distinct element method. …

    Marine and Petroleum Geology (51), 34-48, 2014-03

    IR 

  • Neogene to Quaternary tectonics in the Tsugaru Peninsula, northeast Japan  [in Japanese]

    Nemoto Naoki

    新第三紀以降の津軽半島におけるテクトニクスを概観し,鮮新世以降の地質構造を概説した.<BR>津軽半島における新第三紀以降の地史は,他の日本海沿岸地域と類似する.前期中新世に日本海誕生に伴う火山活動によりグリーンタフが形成され,中期中新世には日本海拡大に伴い浅海から深海へと沈降した.鮮新世以降,東北日本弧は東西圧縮の応力場に置かれ,津軽半島では逆断層やドームなどの地質構造が発達した.その …

    The Quaternary Research (Daiyonki-Kenkyu) 53(4), 205-212, 2014

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  • Geologic age and depositional environments of the uppermost part of the Middle Miocene Iriomote Formation in the Iriomote-jima Island, Okinawa, southwest Japan  [in Japanese]

    Kotake Nobuhiro , Kameo Koji , Nara Masakazu

    沖縄県西表島に分布する中新統八重山層群西表層最上部の地質年代と堆積環境を検討した.西表層最上部は内側陸棚までの海進と干潟までの海退がセットとなる4つの堆積サイクルで構成される.石灰質ナンノ化石が生痕化石<i>Thalassinoides suevicus</i>の充填物からのみ検出され,西表層最上部は中期中新世初期(CN4帯:14.91 Ma~13.53 Ma)であることが …

    The Journal of the Geological Society of Japan 119(11), 701-713, 2013

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  • Application of Three-dimensional Resistivity Modeling by A Combination of Magnetotelluric and Audio-Magnetotelluric Methods to Clarify Hydrogeologic Structure Over Wide Area  [in Japanese]

    麻植 久史 , 小池 克明 , 吉永 徹 , 高倉 伸一

    地下水流動系は水平・垂直方向に広い範囲にわたるが, この解明は地下水資源の量と質に関する保全に不可欠である. これには深部地質構造の推定を可能とする電磁探査法の適用が有効である. 本研究では, この推定精度の向上を目的とし, 電磁波の周波数帯が異なるMT 法と AMT 法を組み合わせ, 比抵抗分布の 3 次元モデリング法を検討した. これを地下水資源が豊富な熊本平野を研究対象に適用したところ, 比 …

    情報地質 = Geological data processing 23(3), 121-129, 2012-09-15

    IR 

  • Application of Three-dimensional Resistivity Modeling by A Combination of Magnetotelluric and Audio-Magnetotelluric Methods to Clarify Hydrogeologic Structure Over Wide Area  [in Japanese]

    ASAUE Hisafumi , KOIKE Katsuaki , YOSHINAGA Toru , TAKAKURA Shinichi

    地下水流動系は水平・垂直方向に広い範囲にわたるが,この解明は地下水資源の量と質に関する保全に不可欠である.これには深部地質構造の推定を可能とする電磁探査法の適用が有効である.本研究では,この推定精度の向上を目的とし,電磁波の周波数帯が異なるMT 法と AMT 法を組み合わせ,比抵抗分布の 3 次元モデリング法を検討した.これを地下水資源が豊富な熊本平野を研究対象に適用したところ,比抵抗分布より浅部 …

    Geoinformatics 23(3), 121-129, 2012

    J-STAGE 

  • ENVIRONMENT OF MINERAL-FLUID INTERACTIONS IN THE TOYOHA HYDROTHERMAL SYSTEM, SOUTHWESTERN HOKKAIDO, JAPAN

    INOUE ATSUYUKI , KUROKAWA KYOHEI , NITTA MIYUKI

    … The zonal arrangement is nearly parallel to the stratigraphic boundaries in the Toyoha area, though it was modified by later geologic events to some extent. … The alteration of stage II is also of propylitic in nature as a whole, but it accompanied the formation of specific minerals such as allanite and tourmaline along with K-feldspar, relatively Fe-rich chlorite, and 2M_1 illite. … The ore deposition was caused by the mixing of ascending deep fluid and descending ground water. …

    Clay Science 16(3), 59-81, 2012

    J-STAGE  References (83)

  • Evidence for cumulative vertical displacement due to the sub-surface fault associated with the 2008 Iwate-Miyagi Nairiku earthquake::Borehole survey at Okayama, Gembi Town, Ichinoseki City, Iwate Prefecture, Japan  [in Japanese]

    Toda Shinji , Maruyama Tadashi , Yoshimi Masayuki , Omata Masashi , Kohriya Yorihide

    … To reveal the geologic structure and repeating behavior of the source fault associated with the 2008 Mw=6.9 Iwate-Miyagi Nairiku earthquake, we excavated a 51-m-deep borehole on the up-thrown side of the surface rupture at Okayama, Genbi Town, Ichinoseki City. … The borehole penetrated 2.5-m thick young sediment (surface soil, loam, and gravel), and a sequence of horizontal or sub-horizontal sandstone, siltstone, conglomerate, and tuff breccia of the Miocene Monji Formation. …

    Active Fault Research 2011(34), 23-30, 2011

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  • The Second Continent  [in Japanese]

    KAWAI Kenji , TSUCHIYA Taku , MARUYAMA Shigenori

    …  Recent progress in our understanding of the consuming plate boundary indicates the ubiquitous occurrence of tectonic erosion of the hanging wall of the continental margin, sediment-trapped subduction, and direct subduction of immature oceanic arcs into deep mantle. … Formation and dynamics of those second continents would have controlled the Earth's thermal history over geologic time. …

    Journal of Geography (Chigaku Zasshi) 119(6), 1197-1214, 2010-12-25

    J-STAGE  References (56) Cited by (6)

  • Basement Structure in and around the Tegano Fault, Central Japan

    TANAKA Toshiyuki , AOKI Harumi , TAJIKARA Masayoshi , SHIMOYAMA Mio , NOZAKI Kyozo , YAMAMOTO Akihiko

    … It is believed that the longer and older Byobusan fault, which runs side by side with the Tegano fault, affects the formation of the Tegano fault. … this supports the hypothesis that the Tegano fault was derived from the deep part of the Byobusan fault. … Although the tectonic landform in the Tegano fault is young (or, the Byobusan fault is old), the deep part of the Tegano fault or the Byobusan fault may be capable of producing an earthquake. …

    Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 63(1), 11-20, 2010

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  • Discovery of Triassic siliceous rocks within a large Permian oceanic-rock mass in the Mt. Funabuseyama area, western Mino terrane, and geologic implication  [in Japanese]

    Kuwahara Kiyoko , Sano Hiroyoshi , Ezaki Yoichi , Yao Akira

    岐阜県舟伏山地域美濃帯のペルム系深海珪質岩相,初鹿谷層(下部~上部ペルム系上部)から下部三畳系(Spathian)のチャート・珪質粘土岩を見出した.中部ペルム系上部(<i>Follicucullus scholasticus-Follicucullus ventricosus</i>帯)~ペルム系最上部(<i>Neoalbaillella optima</ …

    The Journal of the Geological Society of Japan 116(3), 159-173, 2010

    J-STAGE  Cited by (1)

  • Geologic Structure and Geochemistry of Taiwanese Mud Volcanoes  [in Japanese]

    HAMADA Yoshihiro , TANAKA Kazuhiro , MIYATA Yuichiro

    …  The geology and geochemistry of mud volcanoes in Taiwan was investigated to elucidate the relationship between their distribution and geological structure and the mechanism of ascending fluid migration from deep underground regions caused by abnormal pore water pressure. …

    Journal of Geography (Chigaku Zasshi) 118(3), 408-423, 2009-07-07

    J-STAGE  References (38) Cited by (6)

  • Monitoring of CO_2 Injected into Deep Saline Aquifer for Geologic Storage Projects  [in Japanese]

    XUE Ziqiu

    … plays several diverse and critical roles in the development and acceptance of geologic storage. … is retained in the formation, it is necessary to verify the mass of CO<SUB>2</SUB> …

    Journal of MMIJ 124(1), 44-49, 2008-01-25

    J-STAGE  References (26) Cited by (2)

  • MODELING FIELD DIFFUSION EXPERIMENTS IN CLAY ROCK: INFLUENCE OF NUMERICAL REPRESENTATION OF BOREHOLE AND ROCK INTERFACE

    GIMMI Thomas

    …   Argillaceous rocks are considered in Switzerland and in other countries as potential host rocks for the deep geologic disposal of radioactive waste. … Opalinus Clay, a formation of Jurassic age, is at present the most favored candidate in Switzerland. …

    Journal of Environmental Science for Sustainable Society (2), 63-70, 2008

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  • The three dimensional groundwater flow detection method using ultrasonic reflection ec h o  [in Japanese]

    TOIDA Masaru , TANAKA Mayumi , NAGAI Satoshi , SUZUKI Takehiko , SATO Mitsuyoshi , KOMAI Masafumi , OHE Toshiaki , NISHIGAKI Makoto

    地下深部における地下水流速は10<SUP>-10</SUP>-10<SUP>-8</SUP>m/sと想定されているが,ボーリング孔を利用した既存の流向・流速計測技術では,必ずしも充分な対応ができない.そこで,地下深部で10<SUP>-10</SUP>~10<SUP>-5</SUP>m/sまでの3次元地下 …

    Journal of Groundwater Hydrology 49(4), 291-307, 2007

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