NissirosV1, Main, Exploration, bibRecord, 000166

Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece

Identifieur interne : 000166 ( Main/Exploration ); précédent : 000165; suivant : 000167

Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece

Auteurs : Aya Shimizu [Japon] ; Hirochika Sumino [Japon] ; Keisuke Nagao [Japon] ; Kenji Notsu [Japon] ; Panagiotis Mitropoulos [Grèce]

Source :

Journal of volcanology and geothermal research [ 0377-0273 ] ; 2005.

RBID : Pascal:05-0446407

Descripteurs français

Pascal (Inist)
- Gaz rare, Macédoine Grèce, Isotope, Iles Egée Grèce, Subduction, Sr 87-Sr 86, Volcan, Variation temporelle, Assimilation, Arc volcanique, Hélium, Croûte continentale, Magma, Manteau sup, Faible profondeur, Fumerolle, Source thermale, Activité, Magmatisme, Manteau sous continental, He 4-He 3, Hellénides, Ne 22-Ne 20, Gaz volcanique, Manteau lithosphérique, Ne 22-Ne 21, Ar 38-Ar 36, Ar 40-Ar 36, Xe 132, Kr 84.
Wicri :
- topic : Gaz rare.

English descriptors

KwdEn :
- Ar-38/Ar-36, Ar-40/Ar-36, Greek Aegean Islands, Greek Macedonia, He-4/He-3, Hellenides, Kr-84, Ne-22/Ne-20, Ne-22/Ne-21, Sr-87/Sr-86, Xe-132, activity, assimilation, continental crust, fumaroles, helium, hot springs, isotopes, magmas, magmatism, noble gases, shallow depth, subcontinental mantle, subduction, time variations, upper mantle, volcanic arcs, volcanoes.

Abstract

In contrast to most other arcs with oceanic plate subduction, the Aegean arc is characterized by continent-continent subduction. Noble gas abundances and isotopic compositions of 45 gas samples have been determined from 6 volcanoes along the arc, 2 islands in the back-arc region and 7 sites in the surrounding areas. The ³He/⁴He ratios of the samples ranged from 0.027R_A to 6.2R_A (R_A denotes the atmospheric ³He/⁴He ratio of 1.4 × 10^-6), demonstrating that even the maximum ³He/⁴He ratio in the region is significantly lower than the maximum ratios of most oceanic subduction systems, which are equal to the MORB value of 8±1 R_A. Regional variations in the ³He/⁴He ratio were observed both along and across the arc. The maximum ³He/⁴He ratio was obtained from Nisyros volcano located in the eastern end of the arc, and the ratio decreased westward possibly reflecting the difference in potential degree of crustal assimilation or the present magmatic activity in each volcano. Across the volcanic arc, the ³He/⁴He ratio decreased with an increasing distance from the arc front, reaching a low ratio of 0.063R_A in Macedonia, which suggested a major contribution of radiogenic helium derived from the continental crust. At Nisyros, a temporal increase in ³He/⁴He ratio due to ascending subsurface magma was observed after the seismic crisis of 1995-1998 and mantle neon was possibly detected. The maximum ³He/⁴He ratio (6.2R_A) in the Aegean region, which is significantly lower than the MORB value, is not probably due to crustal assimilation at shallow depth or addition of slab-derived helium to MORB-like mantle wedge, but inherent characteristics of the subcontinental lithospheric mantle (SCLM) beneath the Aegean arc.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000028
to stream PascalFrancis, to step Curation: 000012
to stream PascalFrancis, to step Checkpoint: 000025
to stream Main, to step Merge: 000167
to stream Main, to step Curation: 000166

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece</title>
<author><name sortKey="Shimizu, Aya" sort="Shimizu, Aya" uniqKey="Shimizu A" first="Aya" last="Shimizu">Aya Shimizu</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Sumino, Hirochika" sort="Sumino, Hirochika" uniqKey="Sumino H" first="Hirochika" last="Sumino">Hirochika Sumino</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Nagao, Keisuke" sort="Nagao, Keisuke" uniqKey="Nagao K" first="Keisuke" last="Nagao">Keisuke Nagao</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Notsu, Kenji" sort="Notsu, Kenji" uniqKey="Notsu K" first="Kenji" last="Notsu">Kenji Notsu</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Mitropoulos, Panagiotis" sort="Mitropoulos, Panagiotis" uniqKey="Mitropoulos P" first="Panagiotis" last="Mitropoulos">Panagiotis Mitropoulos</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Geology, Faculty of Science, National University of Athens, Panepistimiopolis</s1>
<s2>Ano Ilisia, Athens 15784</s2>
<s3>GRC</s3>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Grèce</country>
<placeName><settlement type="city">Athènes</settlement>
<region nuts="2" type="region">Attique (région)</region>
</placeName>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">05-0446407</idno>
<date when="2005">2005</date>
<idno type="stanalyst">PASCAL 05-0446407 INIST</idno>
<idno type="RBID">Pascal:05-0446407</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">000028</idno>
<idno type="wicri:Area/PascalFrancis/Curation">000012</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">000025</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000025</idno>
<idno type="wicri:doubleKey">0377-0273:2005:Shimizu A:variation:in:noble</idno>
<idno type="wicri:Area/Main/Merge">000167</idno>
<idno type="wicri:Area/Main/Curation">000166</idno>
<idno type="wicri:Area/Main/Exploration">000166</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece</title>
<author><name sortKey="Shimizu, Aya" sort="Shimizu, Aya" uniqKey="Shimizu A" first="Aya" last="Shimizu">Aya Shimizu</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Sumino, Hirochika" sort="Sumino, Hirochika" uniqKey="Sumino H" first="Hirochika" last="Sumino">Hirochika Sumino</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Nagao, Keisuke" sort="Nagao, Keisuke" uniqKey="Nagao K" first="Keisuke" last="Nagao">Keisuke Nagao</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Notsu, Kenji" sort="Notsu, Kenji" uniqKey="Notsu K" first="Kenji" last="Notsu">Kenji Notsu</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Laboratory for Earthquake Chemistry Graduate School of Science, University of Tokyo, 7-3-1 Hongo</s1>
<s2>Bunkyo-ku, Tokyo 113-0033</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Tokyo</settlement>
<region type="région">Région de Kantō</region>
</placeName>
<orgName type="university">Université de Tokyo</orgName>
<placeName><settlement type="city">Tokyo</settlement>
<region type="province">Région de Kantō</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Mitropoulos, Panagiotis" sort="Mitropoulos, Panagiotis" uniqKey="Mitropoulos P" first="Panagiotis" last="Mitropoulos">Panagiotis Mitropoulos</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Geology, Faculty of Science, National University of Athens, Panepistimiopolis</s1>
<s2>Ano Ilisia, Athens 15784</s2>
<s3>GRC</s3>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Grèce</country>
<placeName><settlement type="city">Athènes</settlement>
<region nuts="2" type="region">Attique (région)</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Journal of volcanology and geothermal research</title>
<title level="j" type="abbreviated">J. volcanol. geotherm. res.</title>
<idno type="ISSN">0377-0273</idno>
<imprint><date when="2005">2005</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Journal of volcanology and geothermal research</title>
<title level="j" type="abbreviated">J. volcanol. geotherm. res.</title>
<idno type="ISSN">0377-0273</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ar-38/Ar-36</term>
<term>Ar-40/Ar-36</term>
<term>Greek Aegean Islands</term>
<term>Greek Macedonia</term>
<term>He-4/He-3</term>
<term>Hellenides</term>
<term>Kr-84</term>
<term>Ne-22/Ne-20</term>
<term>Ne-22/Ne-21</term>
<term>Sr-87/Sr-86</term>
<term>Xe-132</term>
<term>activity</term>
<term>assimilation</term>
<term>continental crust</term>
<term>fumaroles</term>
<term>helium</term>
<term>hot springs</term>
<term>isotopes</term>
<term>magmas</term>
<term>magmatism</term>
<term>noble gases</term>
<term>shallow depth</term>
<term>subcontinental mantle</term>
<term>subduction</term>
<term>time variations</term>
<term>upper mantle</term>
<term>volcanic arcs</term>
<term>volcanoes</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Gaz rare</term>
<term>Macédoine Grèce</term>
<term>Isotope</term>
<term>Iles Egée Grèce</term>
<term>Subduction</term>
<term>Sr 87-Sr 86</term>
<term>Volcan</term>
<term>Variation temporelle</term>
<term>Assimilation</term>
<term>Arc volcanique</term>
<term>Hélium</term>
<term>Croûte continentale</term>
<term>Magma</term>
<term>Manteau sup</term>
<term>Faible profondeur</term>
<term>Fumerolle</term>
<term>Source thermale</term>
<term>Activité</term>
<term>Magmatisme</term>
<term>Manteau sous continental</term>
<term>He 4-He 3</term>
<term>Hellénides</term>
<term>Ne 22-Ne 20</term>
<term>Gaz volcanique</term>
<term>Manteau lithosphérique</term>
<term>Ne 22-Ne 21</term>
<term>Ar 38-Ar 36</term>
<term>Ar 40-Ar 36</term>
<term>Xe 132</term>
<term>Kr 84</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Gaz rare</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">In contrast to most other arcs with oceanic plate subduction, the Aegean arc is characterized by continent-continent subduction. Noble gas abundances and isotopic compositions of 45 gas samples have been determined from 6 volcanoes along the arc, 2 islands in the back-arc region and 7 sites in the surrounding areas. The <sup>3</sup>
He/<sup>4</sup>
He ratios of the samples ranged from 0.027R<sub>A</sub>
 to 6.2R<sub>A</sub>
 (R<sub>A</sub>
 denotes the atmospheric <sup>3</sup>
He/<sup>4</sup>
He ratio of 1.4 × 10<sup>-6</sup>
), demonstrating that even the maximum <sup>3</sup>
He/<sup>4</sup>
He ratio in the region is significantly lower than the maximum ratios of most oceanic subduction systems, which are equal to the MORB value of 8±1 R<sub>A</sub>
. Regional variations in the <sup>3</sup>
He/<sup>4</sup>
He ratio were observed both along and across the arc. The maximum <sup>3</sup>
He/<sup>4</sup>
He ratio was obtained from Nisyros volcano located in the eastern end of the arc, and the ratio decreased westward possibly reflecting the difference in potential degree of crustal assimilation or the present magmatic activity in each volcano. Across the volcanic arc, the <sup>3</sup>
He/<sup>4</sup>
He ratio decreased with an increasing distance from the arc front, reaching a low ratio of 0.063R<sub>A</sub>
 in Macedonia, which suggested a major contribution of radiogenic helium derived from the continental crust. At Nisyros, a temporal increase in <sup>3</sup>
He/<sup>4</sup>
He ratio due to ascending subsurface magma was observed after the seismic crisis of 1995-1998 and mantle neon was possibly detected. The maximum <sup>3</sup>
He/<sup>4</sup>
He ratio (6.2R<sub>A</sub>
) in the Aegean region, which is significantly lower than the MORB value, is not probably due to crustal assimilation at shallow depth or addition of slab-derived helium to MORB-like mantle wedge, but inherent characteristics of the subcontinental lithospheric mantle (SCLM) beneath the Aegean arc.</div>
</front>
</TEI>
<affiliations><list><country><li>Grèce</li>
<li>Japon</li>
</country>
<region><li>Attique (région)</li>
<li>Région de Kantō</li>
</region>
<settlement><li>Athènes</li>
<li>Tokyo</li>
</settlement>
<orgName><li>Université de Tokyo</li>
</orgName>
</list>
<tree><country name="Japon"><region name="Région de Kantō"><name sortKey="Shimizu, Aya" sort="Shimizu, Aya" uniqKey="Shimizu A" first="Aya" last="Shimizu">Aya Shimizu</name>
</region>
<name sortKey="Nagao, Keisuke" sort="Nagao, Keisuke" uniqKey="Nagao K" first="Keisuke" last="Nagao">Keisuke Nagao</name>
<name sortKey="Notsu, Kenji" sort="Notsu, Kenji" uniqKey="Notsu K" first="Kenji" last="Notsu">Kenji Notsu</name>
<name sortKey="Sumino, Hirochika" sort="Sumino, Hirochika" uniqKey="Sumino H" first="Hirochika" last="Sumino">Hirochika Sumino</name>
</country>
<country name="Grèce"><region name="Attique (région)"><name sortKey="Mitropoulos, Panagiotis" sort="Mitropoulos, Panagiotis" uniqKey="Mitropoulos P" first="Panagiotis" last="Mitropoulos">Panagiotis Mitropoulos</name>
</region>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NissirosV1/Data/Main/Exploration

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000166 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000166 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Terre
   |area=    NissirosV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:05-0446407
   |texte=   Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece
}}

This area was generated with Dilib version V0.6.33.
Data generation: Tue Jan 16 00:18:27 2018. Site generation: Mon Feb 1 22:09:13 2021

	Serveur d'exploration Nissiros
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration Nissiros

Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece

Variation in noble gas isotopic composition of gas samples from the Aegean arc, Greece

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri