Abstracts of Annual Meeting of the Geochemical Society of Japan

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HIMU-FOZO-PREMA connection: link to chemical and water content variation in oceanic crust

Gen Shimoda, Tetsu Kogiso

Session ID: 1D01
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.51.0

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Osmium isotope heterogeneity in the Pacific uppermost mantle

Akira Ishikawa, Ryoko Senda, Kenichiro Tani, Katsuhiko Suzuki, Teruaki ...

Session ID: 1D02
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.52.0

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Origin of the EM-1 flavor in Pitcairn basalts: implications from highly siderophile elements and Os isotopes

Ryoko Senda, Takeshi Hanyu, Akira Ishikawa, Hiroshi Kawabata, Toshiro ...

Session ID: 1D03
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.53.0

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Subducted halogens and noble gases in the mantle wedge peridotites

Masahiro Kobayashi, Hirochika Sumino, Keisuke Nagao, Satoko Ishimaru, ...

Session ID: 1D04
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.54.0

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In order to put a better constraint on how far the influence of subducted water extends in the mantle, we determined halogens and noble gases of H₂O-rich fluid inclusions in peridotites from subduction zones (the Avacha volcano, the Pinatubo volcano and the Horoman massif). Their compositions suggest that sedimentary pore fluids-derived water is subducted at least beneath the island arcs.

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Low core-mantle boundary temperature inferred from the solidus of pyrolite

Ryuichi Nomura, Kei Hirose, Kentaro Uesugi, Yasuo Ohishi, Akira Tsuchi ...

Session ID: 1D05
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.55.0

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Melting temperature of the Earth's mantle provides key constraints on the thermal structures in both the mantle and the core. We show that the solidus temperature of a primitive (pyrolitic) mantle is as low as 3570 ± 200 kelvin at the core-mantle boundary (CMB), based on the observation of small amounts of partial melt by three-dimensional x-ray micro-tomography imaging. It gives the upper bound of the CMB temperature (TCMB) since the mantle side of the CMB is not globally molten. Such remarkably low TCMB indicates that silicate post-perovskite may be present ubiquitously above the CMB. The low TCMB also requires that the melting temperature of outer core alloy is depressed largely by the impurity effect, suggesting that hydrogen is an important alloying element.

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Re-examination of problems associated with experimental studies on the secular variation of the 40Ar/36Ar for the terrestrial atmosphere and the Earth's interior

Ichiro Kaneoka

Session ID: 1D06
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.56.0

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Secular variation of the ⁴⁰Ar/³⁶Ar of the terrestrial atmosphere and the Earth's interior gives a significant information on the degassing history of the Earth and several models have been proposed about it. However,such experimetal data on the past 40Ar/36Ar as are reliable to check such models are quite limited. In this study, I will discuss about reasons why it is not easy to get reliable ⁴⁰Ar/³⁶Ar in the past together with some cautions during data acquisitions.

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Nitrogen isotope ratios and the origin of nitrogen trapped in fluid inclusions in hydrothermal ores

Mitsuhiro Ooki, Takanori Kagoshima, Naoto Takahata, Yuji Sano, Masato ...

Session ID: 1D07
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.57.0

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Determination of elemental speciation in geochemical reference materials using a sequential extraction procedure (the BCR scheme)

Ran Kubota, Atsuyuki Ohta, Takashi Okai

Session ID: 1D08
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.58.0

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GANSEKI" Advantages: Major Update of Deep Seafloor Rock Sample Database of JAMSTEC and its Multi-Database Networking"

Takayuki Tomiyama, Yuji Ichiyama, Hiroki Horikawa, Shinsuke Soma, Yusu ...

Session ID: 1D09
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.59.0

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JAMSTEC provides its rock sample information at the Deep Seafloor Rock Sample Database GANSEKI". GANSEKI experienced a major update in 2013. In the new GANSEKI

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Geochemistry of tholeiitic basalts from the Nyos volcano in the Oku Volcanic Group (Cameroon Volcanic Line), west Africa: constraints on petrogenesis

Asobo N.E. Asaah, Tetsuya Yokoyama, Festus T. Aka, Tomohiro Usui, Meng ...

Session ID: 1D10
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.60.0

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The Nyos volcano located in the Oku Volcanic Group (OKVG) of the CVL is unique because it hosts basanite and alkaline basalts in association with tholeiitic basalts. The aim of this study is to constrain the petrogenesis of these rock types from their geochemical characteristics. Similarity in Zr/Hf and Nb/Ta ratios of both alkaline and tholeiitic basalts strongly indicated their derivation from the same mantle source.

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Strontium isotope ratio (⁸⁷Sr/⁸⁶Sr) of stream sediments classified by particle size in Akiyoshi limestone area

Yuka Jomori, Masayo Minami, Atsuyuki Ohta

Session ID: 1D11
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.61.0

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Geochemical characteristics of the soils on Mino-Akasaka limestone area, Gifu prefecture

Shinichiro Ueno, Kenichiro Sugitani

Session ID: 1D12
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.62.0

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Elemental variations in the basement rocks in southern Tohoku area

Masumi Mikoshiba, Yutaka Takahashi, Takashi Okai, Yutaka Kanai, Kazuya ...

Session ID: 1D13
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.63.0

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Hadean crust inferred from apatite inclusions in Hadean detrital zircon

Shinji Yamamoto, Tsuyoshi Komiya, Shuhei Sakata, Takafumi Hirata

Session ID: 1D14
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.64.0

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Newly revealed NNW shift of granitic magmatism during Mid-Miocene period, Kyushu, Japan

Yuji Orihashi, Ryo Anma, Hironao Shinjoe

Session ID: 1D15
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.65.0

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Zircon U-Pb dating from the mafic enclaves in the Tanzawa Tonalitic Pluton, Japan: Implications for formation age of the arc lower-crust

Kazue Suzuki, Shinji Yamamoto, Yibing Li, Takeshi Hirata, Yoshiaki Kon ...

Session ID: 1D16
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.66.0

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Chemical composition of crustal fluid inferred by mixing analysis using tritium concentration

Hiroshi Takahashi, Kohei Kazahaya, Masaaki Takahashi, Akihiko Inamura

Session ID: 1D17
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.67.0

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Origen of hot spring waters from Hokkaido estimated by halogen elements and 129I/127I ratios

Nobuaki Okabe, Yasuyuki Muramatsu, Mikako Arai, Hiroyuki Matsuzaki, Ma ...

Session ID: 1D18
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.68.0

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Hydrochemistry and Isotopic Characteristics of Non-volcanic Hot Springs around the Miocene Granitic Rocks Surrounding the Kofu Basin

Muga Yaguchi, Yoichi Muramatsu, Hitoshi Chiba, Takeshi Ohba, Fumiaki O ...

Session ID: 1D19
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.69.0

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Chemical and stable isotopic compositions (δD, δ¹⁸O, δ³⁴S) of hot spring waters from the Miocene gtanitic rocks area surrounding the Kofu basin were analyzed to constrain the water-rock interactions to make chemical properties and isotopic characteristics of hot spring waters.

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Comparison of Sr isotope ratio in hydrothermal fluids from Okinawa Trough: Inducing information of solid phase below the seafloor

Tomohiro Toki, Tasuku Nohara, Yoshiaki Urata, Ryuichi Shinjo, Jun-ichi ...

Session ID: 1D20
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.70.0

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ESR dating of barite in sea-floor hydrothermal sulfide deposits from Okinawa Trough

Taisei Fujiwara, Shin Toyoda, Ai Uchida, Jun-ichiro Ishibashi, Shun'ic ...

Session ID: 1D21
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.71.0

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Geothermometric temperature change of co-produced formation water during gas production

Fumiaki Okumura

Session ID: 1E01
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.72.0

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Carbon dioxide dictates alternative methanogenic pathways in oil reservoirs.

Daisuke Mayumi, Susumu Sakata, Haruo Maeda, Yoshihiro Miyagawa, Masayu ...

Session ID: 1E02
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.73.0

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Characteristic of naphthalenes derived from hydrous pyrolysis of sesquiterpene

Kenta Asahina, Noriyuki Suzuki

Session ID: 1E03
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.74.0

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Mantle carbon and sulfur fluxes in subduction zone

Yuji Sano, Takanori Kagoshima, Naoto Takahata, Teruyuki Maruoka, Tobia ...

Session ID: 1E04
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.75.0

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Some problems on estimation of volcanic volatile flux

Hiroshi Shinohara

Session ID: 1E05
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.76.0

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Volcanoes are the major degassing source of the earth and we can quantify fluxes of these degassing. Therefore, these fluxes provide us important constraints to understand evolution of the atmosphere and the ocean, and material recycling in the Earth's interior. Volcanic volatile fluxes at the subduction zones are commonly estimated based on 1) flux measurement of various emissions of gases and waters, or 2) magma flux and volatile contents in the magma. We will review these methods and reveal the present status and problems of the flux estimate methods.

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Carbon geodynamic cycle in the continental crust

M. Satish-Kumar

Session ID: 1E06
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.77.0

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A compilation on the field occurrence, distribution and carbon isotope characteristics of carbon-bearing rocks in lower crustal rocks in different settings and discuss the mechanism of isotopic partitioning in a context of carbon geodynamic cycle is presented in this talk.

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Status of the research project on the dynamics of radiocaesium in the Fukushima environment - Overview of the F-TRACE Project -

Tadafumi Niizato, Takuya Ohyama, Hironori Funaki, Akihiro Kitamura

Session ID: 1E07
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.78.0

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An understanding of the environmental dynamics of the radiocaesium released from Fukushima Daiichi Nuclear Power Plant is a crucial issue for remediation of the Fukushima environment because it is the main radionuclide which contributes to population dose within the contaminated area. This paper presents the research project of JAEA on the transport and depositional behavior of the radiocaesium in the Fukushima environments, such as forests, rivers, and dam lake.

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Synthesis of pollucite using cesium ion as a template from natural zeolites

Natsumi Kamiya, Tetsuya Toda, Kazuhito Asazuki, Yoshinobu Yokomori

Session ID: 1E08
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.79.0

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Pollucite is a kind of zeolites and has cesium ion in the framework. In this study, pollucite was synthesized hydrothermally from cesium and natural mordenite or clinoptilolite or smectite at 513K.

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Natural analogue study based on chemical composition of core samples obtained from the deep boreholes in Horonobe, Hokkaido.

Takuma Murakami, Takashi Mizuno

Session ID: 1E09
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.80.0

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Relationship between fault architecture and barrier function for HLW disposal

Hidekazu Yoshida, Koshi Yamamoto

Session ID: 1E10
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.81.0

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Mobility of elements in oxidized band developed in sedimentary and igneous rocks

Koshi Yamamoto, Hidekazu Yoshida

Session ID: 1E11
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.82.0

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Development of REE resources and its radioactive management

Yosuke Kawata

Session ID: 1E12
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.83.0

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Infrared spectroscopy and mass spectrometry of soluble fractions of organic matter in the Murchison meteorites

Yohei Yamashita, Hiroshi Naraoka, Fumio Kitajima

Session ID: 1P01
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.84.0

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Investigation of Ni isotope anomalies in meteorites

Hisashi Miyamoto, Katsuyuki Yamashita

Session ID: 1P02
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.85.0

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Development on Pb isotope analyses by non-resonant Laser SNMS

Makoto Nakabayashi, Kentaro Terada, Michisato Toyoda, Ryosuke Nakamura ...

Session ID: 1P03
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.86.0

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Toward understanding of isotopic homogenization processes in the early solar system: Various types of hibonite-bearing inclusions from the Murchison CM2 chondrite.

Hajime Hiyagon, Kohei Fukuda

Session ID: 1P04
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.87.0

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In order to better understand isotopic homogenization processes in the early solar system, we are planning to conduct multi-isotope analyses using SIMS on hibonite-bearing inclusions from CM chondrites. We applied freeze-thaw separation, density separation and hand-picking to the Murchison CM2 chondrite and succeeded to separate several tens of hibonite-bearing inclusions. Various types of hibonite-bearing inclusions, including new types, were found in the present study. Here we report SEM-EDS analyses of these newly separated inclusions and discuss possible formation conditions for them.

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In-situ U-Pb analyses of lunar agglutinates

Naoki Sakamoto, Hiroshi Hidaka

Session ID: 1P05
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.88.0

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Isotope study of REE, Sr and Ba in eucrites

Kohei Sera, Hiroshi Hidaka, Shigekazu Yoneda

Session ID: 1P06
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.89.0

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Redistribution of alkaline elements in the chondrules of the Sayama CM2 chondrite

Takuya Higuchi

Session ID: 1P07
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.90.0

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An isotopic study of FUN hibonite-bearing inclusions from the Murchison (CM2) meteorite.

Kohei Fukuda, Hajime Hiyagon, Shogo Sasaki, Takashi Mikouchi, Wataru F ...

Session ID: 1P08
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.91.0

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Cosmic-ray irradiation records of the early condensates in the solar system studied from in-situ Sm isotopic analyses

Kazuyo Toyota, Hiroshi Hidaka

Session ID: 1P09
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.92.0

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Strontium isotope anomalies and ²⁶Al-²⁶Mg chronology in CAIs from CV chondrites

Kunihiro Myojo, Tetsuya Yokoyama, Yuji Sano, Naoto Takahata, Naoji Sug ...

Session ID: 1P10
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.93.0

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In-situ analyses of PGE abundances in CK chondrites

Daisuke Iseda

Session ID: 1P11
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.94.0

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Isotopic composition of water from fluid inclusions in stalagmites using thermal extraction

Masashi Nakamoto, Ryu Uemura, Masakazu Gibo, Satoru Mishima, Ryuji Asa ...

Session ID: 1P12
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.95.0

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Stable isotopic compositions of otolith of bluefin tuna after 34 days rearing experiments.

Tomomi Tetsu, Toyoho Ishimura, Takashi Kitagawa, Atsushi Suzuki, Shing ...

Session ID: 1P13
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.96.0

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Late Triassic climate change revealed by variations in the mineralogical composition of cherts

Ryoichi Nakada, Kazuhiro Ogawa, Noritoshi Suzuki, Satoshi Takahashi, Y ...

Session ID: 1P14
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.97.0

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Structural changes of humic acids with environmental conditions isolated from river mouth sediments in inner part of Ariake Sea and Sone tidal flat sediments

Yuya Iwamoto, Teppei Kawaguchi, Noriaki Yamauchi, Hiroshi Naraoka

Session ID: 1P15
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.98.0

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Discovery of Phthalimides as Novel Biomarkers of Photoautotroph in Sedimentary Rocks

TAICHI YOTA, RYOKO ARAKI, SHINYA NOMOTO

Session ID: 1P16
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.99.0

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Factors controlling the average cyclization of the GDGTs and GDCTs from the thermoacidophilic archaeon, Sulfolobus sp.

Natsumi Ota, Fumio Kitazima, Hirosi Naraoka

Session ID: 1P17
Published: 2013
Released on J-STAGE: August 31, 2013

DOIhttps://doi.org/10.14862/geochemproc.60.0.100.0

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