Empirical calibration of the clinopyroxene–garnet magnesium isotope geothermometer and implications
The large equilibrium Mg isotope fractionation between clinopyroxene and garnet observed in eclogites makes it a potential high-precision geothermometer, but calibration of this thermometer by natural samples is still limited. Here, we report Mg isotopic compositions of eclogite whole rocks as well...
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| Veröffentlicht in: | Contributions to mineralogy and petrology 2016-07, Vol.171 (7), p.1-14, Article 61 |
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| creator | Li, Wang-Ye Teng, Fang-Zhen Xiao, Yilin Gu, Hai-Ou Zha, Xiang-Ping Huang, Jian |
| description | The large equilibrium Mg isotope fractionation between clinopyroxene and garnet observed in eclogites makes it a potential high-precision geothermometer, but calibration of this thermometer by natural samples is still limited. Here, we report Mg isotopic compositions of eclogite whole rocks as well as Mg and O isotopic compositions of clinopyroxene and garnet separates from 16 eclogites that formed at different temperatures from the Dabie orogen, China. The whole-rock δ
26
Mg values vary from −1.20 to +0.10 ‰. Among them, 11 samples display limited δ
26
Mg variations from −0.36 to −0.17 ‰, similar to those of their protoliths. The mineral separates exhibit very different δ
26
Mg values, from −0.39 to +0.39 ‰ for clinopyroxenes and from −1.94 to −0.81 ‰ for garnets. The clinopyroxene–garnet Mg isotope fractionation (Δ
26
Mg
clinopyroxene–garnet
= δ
26
Mg
clinopyroxene
–δ
26
Mg
garnet
) varies from 1.05 to 2.15 ‰. The clinopyroxene–garnet O isotope fractionation (Δ
18
O
clinopyroxene–garnet
= δ
18
O
clinopyroxene
–δ
18
O
garnet
) varies from −1.01 to +0.98 ‰. Equilibrium Mg isotope fractionation between clinopyroxene and garnet in the investigated samples is selected based on both the δ
26
Mg
clinopyroxene
versus δ
26
Mg
garnet
plot and the state of O isotope equilibrium between clinopyroxene and garnet. The equilibrium Δ
26
Mg
clinopyroxene–garnet
and corresponding temperature data obtained in this study, together with those available so far in literatures for natural eclogites, are used to calibrate the clinopyroxene–garnet Mg isotope thermometer. This yields a function of Δ
26
Mg
clinopyroxene–garnet
= (0.99 ± 0.06) × 10
6
/
T
2
, where T is temperature in Kelvin. The refined function not only provides the best empirically calibrated clinopyroxene–garnet Mg isotope thermometer for precise constraints of temperatures of clinopyroxene- and garnet-bearing rocks, but also has potential applications in high-temperature Mg isotope geochemistry. |
| doi_str_mv | 10.1007/s00410-016-1269-1 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1808740373</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1808740373</sourcerecordid><originalsourceid>FETCH-LOGICAL-a372t-e6a71bad0e36359647d4171178ed2335bdafa9803d5cb88d1552774325c2f61e3</originalsourceid><addsrcrecordid>eNp1kM1KxDAURoMoOI4-gLuAGzfV3KZtmqUM4w8IbnQd0va2ZmiTmrTg7HwH39AnMcO4EMFFuIR7vo_kEHIO7AoYE9eBsQxYwqBIIC1kAgdkARlPEyYLcUgWjMWtkFIek5MQNizeS5kvCK6H0XhT657GYyqvJ-MsdS2dXpHWvbFu3Hr3jha_Pj477S1OdNCdxWDmgZrgJjci7dBF3g9uwAk91bahZhj72LurC6fkqNV9wLOfuSQvt-vn1X3y-HT3sLp5TDQX6ZRgoQVUumHIC57LIhNNBgJAlNiknOdVo1stS8abvK7KsoE8T4WIv8zrtC0A-ZJc7ntH795mDJMaTKix77VFNwcFJStFxrjgEb34g27c7G18nYLoCbIilVmkYE_V3oXgsVWjN4P2WwVM7cSrvXgVxaudeAUxk-4zIbK2Q_-r-d_QN_1kh8o</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1799146294</pqid></control><display><type>article</type><title>Empirical calibration of the clinopyroxene–garnet magnesium isotope geothermometer and implications</title><source>SpringerLink (Online service)</source><creator>Li, Wang-Ye ; Teng, Fang-Zhen ; Xiao, Yilin ; Gu, Hai-Ou ; Zha, Xiang-Ping ; Huang, Jian</creator><creatorcontrib>Li, Wang-Ye ; Teng, Fang-Zhen ; Xiao, Yilin ; Gu, Hai-Ou ; Zha, Xiang-Ping ; Huang, Jian</creatorcontrib><description>The large equilibrium Mg isotope fractionation between clinopyroxene and garnet observed in eclogites makes it a potential high-precision geothermometer, but calibration of this thermometer by natural samples is still limited. Here, we report Mg isotopic compositions of eclogite whole rocks as well as Mg and O isotopic compositions of clinopyroxene and garnet separates from 16 eclogites that formed at different temperatures from the Dabie orogen, China. The whole-rock δ
26
Mg values vary from −1.20 to +0.10 ‰. Among them, 11 samples display limited δ
26
Mg variations from −0.36 to −0.17 ‰, similar to those of their protoliths. The mineral separates exhibit very different δ
26
Mg values, from −0.39 to +0.39 ‰ for clinopyroxenes and from −1.94 to −0.81 ‰ for garnets. The clinopyroxene–garnet Mg isotope fractionation (Δ
26
Mg
clinopyroxene–garnet
= δ
26
Mg
clinopyroxene
–δ
26
Mg
garnet
) varies from 1.05 to 2.15 ‰. The clinopyroxene–garnet O isotope fractionation (Δ
18
O
clinopyroxene–garnet
= δ
18
O
clinopyroxene
–δ
18
O
garnet
) varies from −1.01 to +0.98 ‰. Equilibrium Mg isotope fractionation between clinopyroxene and garnet in the investigated samples is selected based on both the δ
26
Mg
clinopyroxene
versus δ
26
Mg
garnet
plot and the state of O isotope equilibrium between clinopyroxene and garnet. The equilibrium Δ
26
Mg
clinopyroxene–garnet
and corresponding temperature data obtained in this study, together with those available so far in literatures for natural eclogites, are used to calibrate the clinopyroxene–garnet Mg isotope thermometer. This yields a function of Δ
26
Mg
clinopyroxene–garnet
= (0.99 ± 0.06) × 10
6
/
T
2
, where T is temperature in Kelvin. The refined function not only provides the best empirically calibrated clinopyroxene–garnet Mg isotope thermometer for precise constraints of temperatures of clinopyroxene- and garnet-bearing rocks, but also has potential applications in high-temperature Mg isotope geochemistry.</description><identifier>ISSN: 0010-7999</identifier><identifier>EISSN: 1432-0967</identifier><identifier>DOI: 10.1007/s00410-016-1269-1</identifier><identifier>CODEN: CMPEAP</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Calibration ; Earth and Environmental Science ; Earth Sciences ; Fractionation ; Geochemistry ; Geology ; High temperature ; Isotope fractionation ; Isotopes ; Magnesium ; Mineral Resources ; Mineralogy ; Original Paper ; Petrology ; Rocks</subject><ispartof>Contributions to mineralogy and petrology, 2016-07, Vol.171 (7), p.1-14, Article 61</ispartof><rights>Springer-Verlag Berlin Heidelberg 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a372t-e6a71bad0e36359647d4171178ed2335bdafa9803d5cb88d1552774325c2f61e3</citedby><cites>FETCH-LOGICAL-a372t-e6a71bad0e36359647d4171178ed2335bdafa9803d5cb88d1552774325c2f61e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00410-016-1269-1$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00410-016-1269-1$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Li, Wang-Ye</creatorcontrib><creatorcontrib>Teng, Fang-Zhen</creatorcontrib><creatorcontrib>Xiao, Yilin</creatorcontrib><creatorcontrib>Gu, Hai-Ou</creatorcontrib><creatorcontrib>Zha, Xiang-Ping</creatorcontrib><creatorcontrib>Huang, Jian</creatorcontrib><title>Empirical calibration of the clinopyroxene–garnet magnesium isotope geothermometer and implications</title><title>Contributions to mineralogy and petrology</title><addtitle>Contrib Mineral Petrol</addtitle><description>The large equilibrium Mg isotope fractionation between clinopyroxene and garnet observed in eclogites makes it a potential high-precision geothermometer, but calibration of this thermometer by natural samples is still limited. Here, we report Mg isotopic compositions of eclogite whole rocks as well as Mg and O isotopic compositions of clinopyroxene and garnet separates from 16 eclogites that formed at different temperatures from the Dabie orogen, China. The whole-rock δ
26
Mg values vary from −1.20 to +0.10 ‰. Among them, 11 samples display limited δ
26
Mg variations from −0.36 to −0.17 ‰, similar to those of their protoliths. The mineral separates exhibit very different δ
26
Mg values, from −0.39 to +0.39 ‰ for clinopyroxenes and from −1.94 to −0.81 ‰ for garnets. The clinopyroxene–garnet Mg isotope fractionation (Δ
26
Mg
clinopyroxene–garnet
= δ
26
Mg
clinopyroxene
–δ
26
Mg
garnet
) varies from 1.05 to 2.15 ‰. The clinopyroxene–garnet O isotope fractionation (Δ
18
O
clinopyroxene–garnet
= δ
18
O
clinopyroxene
–δ
18
O
garnet
) varies from −1.01 to +0.98 ‰. Equilibrium Mg isotope fractionation between clinopyroxene and garnet in the investigated samples is selected based on both the δ
26
Mg
clinopyroxene
versus δ
26
Mg
garnet
plot and the state of O isotope equilibrium between clinopyroxene and garnet. The equilibrium Δ
26
Mg
clinopyroxene–garnet
and corresponding temperature data obtained in this study, together with those available so far in literatures for natural eclogites, are used to calibrate the clinopyroxene–garnet Mg isotope thermometer. This yields a function of Δ
26
Mg
clinopyroxene–garnet
= (0.99 ± 0.06) × 10
6
/
T
2
, where T is temperature in Kelvin. The refined function not only provides the best empirically calibrated clinopyroxene–garnet Mg isotope thermometer for precise constraints of temperatures of clinopyroxene- and garnet-bearing rocks, but also has potential applications in high-temperature Mg isotope geochemistry.</description><subject>Calibration</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Fractionation</subject><subject>Geochemistry</subject><subject>Geology</subject><subject>High temperature</subject><subject>Isotope fractionation</subject><subject>Isotopes</subject><subject>Magnesium</subject><subject>Mineral Resources</subject><subject>Mineralogy</subject><subject>Original Paper</subject><subject>Petrology</subject><subject>Rocks</subject><issn>0010-7999</issn><issn>1432-0967</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp1kM1KxDAURoMoOI4-gLuAGzfV3KZtmqUM4w8IbnQd0va2ZmiTmrTg7HwH39AnMcO4EMFFuIR7vo_kEHIO7AoYE9eBsQxYwqBIIC1kAgdkARlPEyYLcUgWjMWtkFIek5MQNizeS5kvCK6H0XhT657GYyqvJ-MsdS2dXpHWvbFu3Hr3jha_Pj477S1OdNCdxWDmgZrgJjci7dBF3g9uwAk91bahZhj72LurC6fkqNV9wLOfuSQvt-vn1X3y-HT3sLp5TDQX6ZRgoQVUumHIC57LIhNNBgJAlNiknOdVo1stS8abvK7KsoE8T4WIv8zrtC0A-ZJc7ntH795mDJMaTKix77VFNwcFJStFxrjgEb34g27c7G18nYLoCbIilVmkYE_V3oXgsVWjN4P2WwVM7cSrvXgVxaudeAUxk-4zIbK2Q_-r-d_QN_1kh8o</recordid><startdate>20160701</startdate><enddate>20160701</enddate><creator>Li, Wang-Ye</creator><creator>Teng, Fang-Zhen</creator><creator>Xiao, Yilin</creator><creator>Gu, Hai-Ou</creator><creator>Zha, Xiang-Ping</creator><creator>Huang, Jian</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TN</scope><scope>7XB</scope><scope>88I</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L.G</scope><scope>L6V</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PCBAR</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>R05</scope></search><sort><creationdate>20160701</creationdate><title>Empirical calibration of the clinopyroxene–garnet magnesium isotope geothermometer and implications</title><author>Li, Wang-Ye ; Teng, Fang-Zhen ; Xiao, Yilin ; Gu, Hai-Ou ; Zha, Xiang-Ping ; Huang, Jian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a372t-e6a71bad0e36359647d4171178ed2335bdafa9803d5cb88d1552774325c2f61e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Calibration</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Fractionation</topic><topic>Geochemistry</topic><topic>Geology</topic><topic>High temperature</topic><topic>Isotope fractionation</topic><topic>Isotopes</topic><topic>Magnesium</topic><topic>Mineral Resources</topic><topic>Mineralogy</topic><topic>Original Paper</topic><topic>Petrology</topic><topic>Rocks</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Wang-Ye</creatorcontrib><creatorcontrib>Teng, Fang-Zhen</creatorcontrib><creatorcontrib>Xiao, Yilin</creatorcontrib><creatorcontrib>Gu, Hai-Ou</creatorcontrib><creatorcontrib>Zha, Xiang-Ping</creatorcontrib><creatorcontrib>Huang, Jian</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Oceanic Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>https://resources.nclive.org/materials</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Research Library</collection><collection>ProQuest Science Journals</collection><collection>ProQuest Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>ProQuest Earth, Atmospheric & Aquatic Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering collection</collection><collection>ProQuest Central Basic</collection><collection>University of Michigan</collection><jtitle>Contributions to mineralogy and petrology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Wang-Ye</au><au>Teng, Fang-Zhen</au><au>Xiao, Yilin</au><au>Gu, Hai-Ou</au><au>Zha, Xiang-Ping</au><au>Huang, Jian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Empirical calibration of the clinopyroxene–garnet magnesium isotope geothermometer and implications</atitle><jtitle>Contributions to mineralogy and petrology</jtitle><stitle>Contrib Mineral Petrol</stitle><date>2016-07-01</date><risdate>2016</risdate><volume>171</volume><issue>7</issue><spage>1</spage><epage>14</epage><pages>1-14</pages><artnum>61</artnum><issn>0010-7999</issn><eissn>1432-0967</eissn><coden>CMPEAP</coden><abstract>The large equilibrium Mg isotope fractionation between clinopyroxene and garnet observed in eclogites makes it a potential high-precision geothermometer, but calibration of this thermometer by natural samples is still limited. Here, we report Mg isotopic compositions of eclogite whole rocks as well as Mg and O isotopic compositions of clinopyroxene and garnet separates from 16 eclogites that formed at different temperatures from the Dabie orogen, China. The whole-rock δ
26
Mg values vary from −1.20 to +0.10 ‰. Among them, 11 samples display limited δ
26
Mg variations from −0.36 to −0.17 ‰, similar to those of their protoliths. The mineral separates exhibit very different δ
26
Mg values, from −0.39 to +0.39 ‰ for clinopyroxenes and from −1.94 to −0.81 ‰ for garnets. The clinopyroxene–garnet Mg isotope fractionation (Δ
26
Mg
clinopyroxene–garnet
= δ
26
Mg
clinopyroxene
–δ
26
Mg
garnet
) varies from 1.05 to 2.15 ‰. The clinopyroxene–garnet O isotope fractionation (Δ
18
O
clinopyroxene–garnet
= δ
18
O
clinopyroxene
–δ
18
O
garnet
) varies from −1.01 to +0.98 ‰. Equilibrium Mg isotope fractionation between clinopyroxene and garnet in the investigated samples is selected based on both the δ
26
Mg
clinopyroxene
versus δ
26
Mg
garnet
plot and the state of O isotope equilibrium between clinopyroxene and garnet. The equilibrium Δ
26
Mg
clinopyroxene–garnet
and corresponding temperature data obtained in this study, together with those available so far in literatures for natural eclogites, are used to calibrate the clinopyroxene–garnet Mg isotope thermometer. This yields a function of Δ
26
Mg
clinopyroxene–garnet
= (0.99 ± 0.06) × 10
6
/
T
2
, where T is temperature in Kelvin. The refined function not only provides the best empirically calibrated clinopyroxene–garnet Mg isotope thermometer for precise constraints of temperatures of clinopyroxene- and garnet-bearing rocks, but also has potential applications in high-temperature Mg isotope geochemistry.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00410-016-1269-1</doi><tpages>14</tpages></addata></record> |
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| identifier | ISSN: 0010-7999 |
| ispartof | Contributions to mineralogy and petrology, 2016-07, Vol.171 (7), p.1-14, Article 61 |
| issn | 0010-7999 1432-0967 |
| language | eng |
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| source | SpringerLink (Online service) |
| subjects | Calibration Earth and Environmental Science Earth Sciences Fractionation Geochemistry Geology High temperature Isotope fractionation Isotopes Magnesium Mineral Resources Mineralogy Original Paper Petrology Rocks |
| title | Empirical calibration of the clinopyroxene–garnet magnesium isotope geothermometer and implications |
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