Constant Cu/Ag in upper mantle and oceanic crust: Implications for the role of cumulates during the formation of continental crust

Wang Zaicong; Becker Harry; Liu Yongsheng; Hoffmann Elis; Chen Chunfei; Zou Zongqi; Li Yuan

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Constant Cu/Ag in upper mantle and oceanic crust: Implications for the role of cumulates during the formation of continental crust

机译：上部地幔和海洋地壳中的常数Cu / Ag：在欧洲地壳形成过程中对累积作用的影响

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Delamination of dense, sulfide-bearing pyroxenitic cumulates was proposed to explain the low Cu content and the evolved major element composition of the continental crust, yet evidence for this hypothesis has been circumstantial. In this study, we present Cu and Ag contents of mantle pyroxenites and associated peridotites from the Balmuccia peridotite massif (Italian Alps) and mantle xenoliths from Hannuoba (North China Craton) to constrain the fractionation behavior of Cu and Ag during melt-peridotite reaction and magmatic accumulation in the mantle. Furthermore, we reexamine the behavior of these elements during arc magmatism and in other reservoirs to highlight the fractionation of Cu and Ag as an important tracer for processes that led to the formation of continental crust.

机译：提出了致密的硫化硫化物含有硫化硫化物累积，以解释大陆壳的低Cu含量和演进的主要元素组成，但这一假设的证据是个性的。在这项研究中，我们呈现Cu和Ag含有来自Hannuoba（华北Craton）的Balmuccia PeridoTite Massif（意大利阿尔卑斯山）和甲板的联系的恒星含量，以限制Cu和Ag在熔融恒星反应中的分馏行为和岩石中的岩石积累。此外，我们在弧形岩浆中和其他储层中重新审视这些元素的行为，以突出Cu和Ag的分馏作为导致欧洲地壳形成的过程的重要示踪剂。

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来源
《Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System》 |2018年第2018期|共11页
作者
Wang Zaicong; Becker Harry; Liu Yongsheng; Hoffmann Elis; Chen Chunfei; Zou Zongqi; Li Yuan;
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作者单位

China Univ Geosci Sch Earth Sci State Key Lab Geol Proc &

Mineral Resources 388 Lumo Rd Wuhan 430074 Hubei Peoples R China;

Free Univ Berlin Inst Geol Wissensch Malteserstr 74-100 D-12249 Berlin Germany;

China Univ Geosci Sch Earth Sci State Key Lab Geol Proc &

Mineral Resources 388 Lumo Rd Wuhan 430074 Hubei Peoples R China;

Free Univ Berlin Inst Geol Wissensch Malteserstr 74-100 D-12249 Berlin Germany;

China Univ Geosci Sch Earth Sci State Key Lab Geol Proc &

Mineral Resources 388 Lumo Rd Wuhan 430074 Hubei Peoples R China;

China Univ Geosci Sch Earth Sci State Key Lab Geol Proc &

Mineral Resources 388 Lumo Rd Wuhan 430074 Hubei Peoples R China;

Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Isotope Geochem Guangzhou 510640 Guangdong Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类天文学、地球科学;行星、卫星、彗星、流星、陨星;
关键词
Cu/Ag; pyroxenite; magmatic fractionation; arc magmatism; continental crust formation;

机译：Cu / Ag;Pyroxenite;岩浆分级;弧形岩浆作用;大陆地壳形成;

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1. Constant Cu/Ag in upper mantle and oceanic crust: Implications for the role of cumulates during the formation of continental crust [J] . Wang Zaicong, Becker Harry, Liu Yongsheng, Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System . 2018,第期

机译：上部地幔和海洋地壳中的常数Cu / Ag：在欧洲地壳形成过程中对累积作用的影响
2. CONTINENTAL CRUST, CRUSTAL UNDERPLATING, AND LOW-Q UPPER MANTLE BENEATH AN OCEANIC ISLAND ARC [J] . Suyehiro K, Takahashi N, Ariie Y, Science . 1996,第5260期

机译：大洋群岛弧下的陆壳，地壳下陷和低Q上地幔
3. Implications of Nb/U, Th/U and Sm/Nd in plume magmas for the relationship between continental and oceanic crust formation and the development of the depleted mantle [J] . Campbell IH. Geochimica et Cosmochimica Acta: Journal of the Geochemical Society and the Meteoritical Society . 2002,第9期

机译：羽状岩浆中Nb / U，Th / U和Sm / Nd对大陆和海洋地壳形成与枯竭地幔发育之间关系的影响
4. Monitoring of Continental and Ocean Crust Subduction Patterns in the Magma Covered by the Philippine Plate as a Young Drifting Crust [C] . Shigchisa Nakamura Progress in electromagnetics research symposium . 2018

机译：监测作为年轻漂流壳的菲律宾板块覆盖的岩浆中大陆和海洋壳的俯冲模式
5. Crustal and upper mantle structure of the Anatolian plate: Imaging the effects of subduction termination and continental collision with seismic techniques [D] . Delph, Jonathan R. 2016

机译：安那托利亚板块的晶体和上地幔结构：用地震技术成像俯冲终止和大陆碰撞的影响
6. The Mg isotopic systematics of granitoids in continental arcs and implications for the role of chemical weathering in crust formation [O] . Bing Shen, Benjamin Jacobsen, Cin-Ty A. Lee, 2009

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7. Significance and Petrochemistry of Upper Mantle–mantle Transition Zone Metaperidotites and Oceanic Crust Metagabbros within the Kazdağı Metaophiolite: Implications for the Geological Evolution of the Izmir–Ankara–Erzincan Ocean, Northwestern Turkey [O] . Ender SARIFAKIOGLU, Mustafa SEVIN, Yildirim DILEK, 2019

机译：KazdažıMetaophiolite上部披露 - 地幔过渡区甲状附岩型和海洋地壳Metagrabs的意义和石化：伊兹密尔 - 安卡拉 - 埃镇海洋地质演变的影响，土耳其西北部
8. Seismic Anistropy and Age-Dependent Structure of the Upper Oceanic Crust. (Reannouncement with New Availability Information). [R] . Fryer, G. J., Miller, D. J., Berge, P. A. 1989

机译：上部海洋地壳的地震反熵与年龄相关的结构。（重新公布新的可用性信息）。

Constant Cu/Ag in upper mantle and oceanic crust: Implications for the role of cumulates during the formation of continental crust

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