Geochronology,geochemistry and Hf isotope of monzogranite in Niubiziliang of Qinghai
Zircon U-Pb dating, whole-rock geochemical analyses and Hf isotope are undertaken for the monzogranite in Niubiziliang area with the aim of constraining its formation time,petrogenesis and the regional tectonic setting. The zircons from monzogranite are euhedral-subhedral in shape,and display rhythm...
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| creator | JIANG Hefang SUN Fengyue LI Liang LI Ruihua YU Lu WANG Fei SHEN Dali |
| description | Zircon U-Pb dating, whole-rock geochemical analyses and Hf isotope are undertaken for the monzogranite in Niubiziliang area with the aim of constraining its formation time,petrogenesis and the regional tectonic setting. The zircons from monzogranite are euhedral-subhedral in shape,and display rhythm growth zoning,indicating a magmatic origin. LA-ICP-MS zircon U-Pb dating indicates the monzogranite formed most probably in the Late Devonian（ 359. 0 ± 2. 6 Ma）. The monzogranite has Si O2= 74. 69%--76. 11%,Al2O3=12. 07%--12. 81%,Na2 O ＋ K2 O = 8. 24%--8. 70%,Na2 O / K2 O = 0. 60--0. 68,A / CNK 〉 1,which shows that it belongs to high-Si and high-K weakly peraluminous calc-alkaline series. The monzogranite is enriched in K,Rb,Th（ LILEs） and La,Ce,Sm,Nd（ LREEs）; and depleted in Ba,U（ HREEs） and Ta,Nb（ HFSEs）.Their zircon εHf（ t） values range from 1. 21 to 3. 46,in response to their two-stage Hf model ages（ TDM2） ranging from 1 034 Ma to 1 159 Ma,respectively,indicating that the primary magma was derived from the young crust in Meso-Neoproterozoic. Combined with the regional geological evolution background,it is considered that the Niubiziliang monzogranite formed the closure of North Qaidam ocean,which was the stretching stage product after the collision between Qaidam block and Qilian block. |
| doi_str_mv | 10.3969/j.issn.1673-9736.2016.03.04 |
| format | Article |
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The zircons from monzogranite are euhedral-subhedral in shape,and display rhythm growth zoning,indicating a magmatic origin. LA-ICP-MS zircon U-Pb dating indicates the monzogranite formed most probably in the Late Devonian（ 359. 0 ± 2. 6 Ma）. The monzogranite has Si O2= 74. 69%--76. 11%,Al2O3=12. 07%--12. 81%,Na2 O ＋ K2 O = 8. 24%--8. 70%,Na2 O / K2 O = 0. 60--0. 68,A / CNK 〉 1,which shows that it belongs to high-Si and high-K weakly peraluminous calc-alkaline series. The monzogranite is enriched in K,Rb,Th（ LILEs） and La,Ce,Sm,Nd（ LREEs）; and depleted in Ba,U（ HREEs） and Ta,Nb（ HFSEs）.Their zircon εHf（ t） values range from 1. 21 to 3. 46,in response to their two-stage Hf model ages（ TDM2） ranging from 1 034 Ma to 1 159 Ma,respectively,indicating that the primary magma was derived from the young crust in Meso-Neoproterozoic. Combined with the regional geological evolution background,it is considered that the Niubiziliang monzogranite formed the closure of North Qaidam ocean,which was the stretching stage product after the collision between Qaidam block and Qilian block.</description><identifier>ISSN: 1673-9736</identifier><identifier>DOI: 10.3969/j.issn.1673-9736.2016.03.04</identifier><language>eng</language><publisher>College of Earth Sciences,Jilin University,Changchun 130061,China%MLR Key Laboratory ofMetallogeny and Mineral Resources Assessment,Institute ofMineral Resources,Chinese Academy ofGeological Sciences,Beijing 100037,China%Qinghai Nuclear Industrial Geology Bureau,Xining 810008,China</publisher><subject>Hf同位素 ; LA-ICP-MS ; 二长花岗岩 ; 同位素地球化学 ; 柴达木地块 ; 锆石U-Pb年龄 ; 长梁 ; 青海</subject><ispartof>世界地质（英文版）, 2016, Vol.19 (3), p.153-163</ispartof><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/87465A/87465A.jpg</thumbnail><link.rule.ids>314,776,780,4009,27902,27903,27904</link.rule.ids></links><search><creatorcontrib>JIANG Hefang SUN Fengyue LI Liang LI Ruihua YU Lu WANG Fei SHEN Dali</creatorcontrib><title>Geochronology,geochemistry and Hf isotope of monzogranite in Niubiziliang of Qinghai</title><title>世界地质（英文版）</title><addtitle>Global Geology</addtitle><description>Zircon U-Pb dating, whole-rock geochemical analyses and Hf isotope are undertaken for the monzogranite in Niubiziliang area with the aim of constraining its formation time,petrogenesis and the regional tectonic setting. The zircons from monzogranite are euhedral-subhedral in shape,and display rhythm growth zoning,indicating a magmatic origin. LA-ICP-MS zircon U-Pb dating indicates the monzogranite formed most probably in the Late Devonian（ 359. 0 ± 2. 6 Ma）. The monzogranite has Si O2= 74. 69%--76. 11%,Al2O3=12. 07%--12. 81%,Na2 O ＋ K2 O = 8. 24%--8. 70%,Na2 O / K2 O = 0. 60--0. 68,A / CNK 〉 1,which shows that it belongs to high-Si and high-K weakly peraluminous calc-alkaline series. The monzogranite is enriched in K,Rb,Th（ LILEs） and La,Ce,Sm,Nd（ LREEs）; and depleted in Ba,U（ HREEs） and Ta,Nb（ HFSEs）.Their zircon εHf（ t） values range from 1. 21 to 3. 46,in response to their two-stage Hf model ages（ TDM2） ranging from 1 034 Ma to 1 159 Ma,respectively,indicating that the primary magma was derived from the young crust in Meso-Neoproterozoic. Combined with the regional geological evolution background,it is considered that the Niubiziliang monzogranite formed the closure of North Qaidam ocean,which was the stretching stage product after the collision between Qaidam block and Qilian block.</description><subject>Hf同位素</subject><subject>LA-ICP-MS</subject><subject>二长花岗岩</subject><subject>同位素地球化学</subject><subject>柴达木地块</subject><subject>锆石U-Pb年龄</subject><subject>长梁</subject><subject>青海</subject><issn>1673-9736</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNo9kFtLAzEQhfOgYKn9D0HfxF1zaWY3j1K0FYoi9H3JdZvSJnXTottf75aKT8OcM5zzMQjdU1JyCfJpU4acY0mh4oWsOJSMUCgJL8n0Co3-5Rs0yTlowpgAykGM0Grukll3KaZtavvH9ry5XciHrscqWrzwOOR0SHuHk8e7FE-p7VQMB4dDxO_hqMMpbIOK7dn_DLFdq3CLrr3aZjf5m2O0en1ZzRbF8mP-NnteFgbYtJACtBBMOlNbSrxStTKe6loYT6a8JpZ7IBYqYWvKtfTSGmUIVFYzS70BPkYPl9hvFf1A0GzSsYtDYWN1b3_6TePObyCcDHljdHc5NusU268BtNl3Yae6vgGQteSSUf4Lzyhj1g</recordid><startdate>2016</startdate><enddate>2016</enddate><creator>JIANG Hefang SUN Fengyue LI Liang LI Ruihua YU Lu WANG Fei SHEN Dali</creator><general>College of Earth Sciences,Jilin University,Changchun 130061,China%MLR Key Laboratory ofMetallogeny and Mineral Resources Assessment,Institute ofMineral Resources,Chinese Academy ofGeological Sciences,Beijing 100037,China%Qinghai Nuclear Industrial Geology Bureau,Xining 810008,China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W94</scope><scope>~WA</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>2016</creationdate><title>Geochronology,geochemistry and Hf isotope of monzogranite in Niubiziliang of Qinghai</title><author>JIANG Hefang SUN Fengyue LI Liang LI Ruihua YU Lu WANG Fei SHEN Dali</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c624-956b5529ec8d10faa8acf1b85cf04380d3f60d675d813b9f9dcac067db2d1fc63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Hf同位素</topic><topic>LA-ICP-MS</topic><topic>二长花岗岩</topic><topic>同位素地球化学</topic><topic>柴达木地块</topic><topic>锆石U-Pb年龄</topic><topic>长梁</topic><topic>青海</topic><toplevel>online_resources</toplevel><creatorcontrib>JIANG Hefang SUN Fengyue LI Liang LI Ruihua YU Lu WANG Fei SHEN Dali</creatorcontrib><collection>维普_期刊</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>维普中文期刊数据库</collection><collection>中文科技期刊数据库-自然科学</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>世界地质（英文版）</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>JIANG Hefang SUN Fengyue LI Liang LI Ruihua YU Lu WANG Fei SHEN Dali</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Geochronology,geochemistry and Hf isotope of monzogranite in Niubiziliang of Qinghai</atitle><jtitle>世界地质（英文版）</jtitle><addtitle>Global Geology</addtitle><date>2016</date><risdate>2016</risdate><volume>19</volume><issue>3</issue><spage>153</spage><epage>163</epage><pages>153-163</pages><issn>1673-9736</issn><abstract>Zircon U-Pb dating, whole-rock geochemical analyses and Hf isotope are undertaken for the monzogranite in Niubiziliang area with the aim of constraining its formation time,petrogenesis and the regional tectonic setting. The zircons from monzogranite are euhedral-subhedral in shape,and display rhythm growth zoning,indicating a magmatic origin. LA-ICP-MS zircon U-Pb dating indicates the monzogranite formed most probably in the Late Devonian（ 359. 0 ± 2. 6 Ma）. The monzogranite has Si O2= 74. 69%--76. 11%,Al2O3=12. 07%--12. 81%,Na2 O ＋ K2 O = 8. 24%--8. 70%,Na2 O / K2 O = 0. 60--0. 68,A / CNK 〉 1,which shows that it belongs to high-Si and high-K weakly peraluminous calc-alkaline series. The monzogranite is enriched in K,Rb,Th（ LILEs） and La,Ce,Sm,Nd（ LREEs）; and depleted in Ba,U（ HREEs） and Ta,Nb（ HFSEs）.Their zircon εHf（ t） values range from 1. 21 to 3. 46,in response to their two-stage Hf model ages（ TDM2） ranging from 1 034 Ma to 1 159 Ma,respectively,indicating that the primary magma was derived from the young crust in Meso-Neoproterozoic. Combined with the regional geological evolution background,it is considered that the Niubiziliang monzogranite formed the closure of North Qaidam ocean,which was the stretching stage product after the collision between Qaidam block and Qilian block.</abstract><pub>College of Earth Sciences,Jilin University,Changchun 130061,China%MLR Key Laboratory ofMetallogeny and Mineral Resources Assessment,Institute ofMineral Resources,Chinese Academy ofGeological Sciences,Beijing 100037,China%Qinghai Nuclear Industrial Geology Bureau,Xining 810008,China</pub><doi>10.3969/j.issn.1673-9736.2016.03.04</doi><tpages>11</tpages></addata></record> |
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| subjects | Hf同位素 LA-ICP-MS 二长花岗岩 同位素地球化学 柴达木地块 锆石U-Pb年龄 长梁 青海 |
| title | Geochronology,geochemistry and Hf isotope of monzogranite in Niubiziliang of Qinghai |
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