Experimental study of the influence of water on elastic wave velocities in dunite and serpentinite (on the nature of the low-velocity zone in the upper mantle of the Earth)
Longitudinal wave velocities ( V P ) in rocks were measured experimentally in dunite (olivinite) and serpentinite at a water pressure of 300 MPa and temperatures of 20–850°C. It is shown that the strong decrease in V P in dunite (by ~3 km/s) observed within the range of 400–800°C results from penetr...
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| Veröffentlicht in: | Doklady earth sciences 2017, Vol.472 (1), p.49-52 |
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| container_title | Doklady earth sciences |
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| creator | Lebedev, E. B. Pavlenkova, N. I. Lukanin, O. A. |
| description | Longitudinal wave velocities (
V
P
) in rocks were measured experimentally in dunite (olivinite) and serpentinite at a water pressure of 300 MPa and temperatures of 20–850°C. It is shown that the strong decrease in
V
P
in dunite (by ~3 km/s) observed within the range of 400–800°C results from penetration of water into rock along microfractures and from the formation of hydrous minerals (mostly serpentine) along the boundaries of mineral grains as a result of water–olivine interaction. It is suggested that serpentinization or the formation of similar hydrous minerals in olivine-rich mantle rocks under the influence of deep fluids may result in the formation of zones of low-velocity elastic waves in the upper mantle at great depths (~100 km). |
| doi_str_mv | 10.1134/S1028334X1701007X |
| format | Article |
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V
P
) in rocks were measured experimentally in dunite (olivinite) and serpentinite at a water pressure of 300 MPa and temperatures of 20–850°C. It is shown that the strong decrease in
V
P
in dunite (by ~3 km/s) observed within the range of 400–800°C results from penetration of water into rock along microfractures and from the formation of hydrous minerals (mostly serpentine) along the boundaries of mineral grains as a result of water–olivine interaction. It is suggested that serpentinization or the formation of similar hydrous minerals in olivine-rich mantle rocks under the influence of deep fluids may result in the formation of zones of low-velocity elastic waves in the upper mantle at great depths (~100 km).</description><identifier>ISSN: 1028-334X</identifier><identifier>EISSN: 1531-8354</identifier><identifier>DOI: 10.1134/S1028334X1701007X</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Earth and Environmental Science ; Earth Sciences ; Elastic waves ; Geophysics ; Mantle (Geology) ; Minerals ; Rocks ; Serpentinite ; Upper mantle ; Velocity ; Water ; Water pressure ; Wave propagation ; Wave velocity</subject><ispartof>Doklady earth sciences, 2017, Vol.472 (1), p.49-52</ispartof><rights>Pleiades Publishing, Ltd. 2017</rights><rights>COPYRIGHT 2017 Springer</rights><rights>Doklady Earth Sciences is a copyright of Springer, 2017.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a411t-5860f482e72bd89d6cae177613e132704b9e9181421ecc8f7095e23aa9c25dad3</citedby><cites>FETCH-LOGICAL-a411t-5860f482e72bd89d6cae177613e132704b9e9181421ecc8f7095e23aa9c25dad3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1028334X1701007X$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1028334X1701007X$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27929,27930,41493,42562,51324</link.rule.ids></links><search><creatorcontrib>Lebedev, E. B.</creatorcontrib><creatorcontrib>Pavlenkova, N. I.</creatorcontrib><creatorcontrib>Lukanin, O. A.</creatorcontrib><title>Experimental study of the influence of water on elastic wave velocities in dunite and serpentinite (on the nature of the low-velocity zone in the upper mantle of the Earth)</title><title>Doklady earth sciences</title><addtitle>Dokl. Earth Sc</addtitle><description>Longitudinal wave velocities (
V
P
) in rocks were measured experimentally in dunite (olivinite) and serpentinite at a water pressure of 300 MPa and temperatures of 20–850°C. It is shown that the strong decrease in
V
P
in dunite (by ~3 km/s) observed within the range of 400–800°C results from penetration of water into rock along microfractures and from the formation of hydrous minerals (mostly serpentine) along the boundaries of mineral grains as a result of water–olivine interaction. It is suggested that serpentinization or the formation of similar hydrous minerals in olivine-rich mantle rocks under the influence of deep fluids may result in the formation of zones of low-velocity elastic waves in the upper mantle at great depths (~100 km).</description><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Elastic waves</subject><subject>Geophysics</subject><subject>Mantle (Geology)</subject><subject>Minerals</subject><subject>Rocks</subject><subject>Serpentinite</subject><subject>Upper mantle</subject><subject>Velocity</subject><subject>Water</subject><subject>Water pressure</subject><subject>Wave propagation</subject><subject>Wave velocity</subject><issn>1028-334X</issn><issn>1531-8354</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kc1u1TAQhSMEEqXwAOwssSmLFE_sxPayqi4_UiUWgNRd5DqT1pWvE2yn5fJMfchOegtCIOSFrTPfOR57quo18GMAId99Ad5oIeQ5KA6cq_Mn1QG0AmotWvmUzlSu1_rz6kXO15xLKVtzUN1tfsyY_BZjsYHlsgw7No2sXCHzcQwLRoercGsLJjZFhsHm4h0JN8huMEzOF4-ZaDYs0RdkNg4sY5op0j8IR2RbA6MtS8Jf8WG6rR_9O_ZziuuFD4Vlpo7Y1sYSfsMbm8rV25fVs9GGjK8e98Pq2_vN19OP9dnnD59OT85qKwFK3eqOj1I3qJqLQZuhcxZBqQ4EgmgUlxcGDWiQDaBzelTctNgIa41r2sEO4rA62ufOafq-YC791meHIdiI05J70EYJAx0oQt_8hV5PS4rUHVHaCOBSSaKO99SlDdjTx04lWUdrwK139PbRk34ijTZG806TAfYGl6acE479TEOyadcD79eB9_8MnDzN3pOJjZeY_mjlv6Z7E9Ou6Q</recordid><startdate>2017</startdate><enddate>2017</enddate><creator>Lebedev, E. 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B. ; Pavlenkova, N. I. ; Lukanin, O. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a411t-5860f482e72bd89d6cae177613e132704b9e9181421ecc8f7095e23aa9c25dad3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Elastic waves</topic><topic>Geophysics</topic><topic>Mantle (Geology)</topic><topic>Minerals</topic><topic>Rocks</topic><topic>Serpentinite</topic><topic>Upper mantle</topic><topic>Velocity</topic><topic>Water</topic><topic>Water pressure</topic><topic>Wave propagation</topic><topic>Wave velocity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lebedev, E. B.</creatorcontrib><creatorcontrib>Pavlenkova, N. I.</creatorcontrib><creatorcontrib>Lukanin, O. 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V
P
) in rocks were measured experimentally in dunite (olivinite) and serpentinite at a water pressure of 300 MPa and temperatures of 20–850°C. It is shown that the strong decrease in
V
P
in dunite (by ~3 km/s) observed within the range of 400–800°C results from penetration of water into rock along microfractures and from the formation of hydrous minerals (mostly serpentine) along the boundaries of mineral grains as a result of water–olivine interaction. It is suggested that serpentinization or the formation of similar hydrous minerals in olivine-rich mantle rocks under the influence of deep fluids may result in the formation of zones of low-velocity elastic waves in the upper mantle at great depths (~100 km).</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1028334X1701007X</doi><tpages>4</tpages></addata></record> |
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| language | eng |
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| source | SpringerNature Journals |
| subjects | Earth and Environmental Science Earth Sciences Elastic waves Geophysics Mantle (Geology) Minerals Rocks Serpentinite Upper mantle Velocity Water Water pressure Wave propagation Wave velocity |
| title | Experimental study of the influence of water on elastic wave velocities in dunite and serpentinite (on the nature of the low-velocity zone in the upper mantle of the Earth) |
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