From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry

Malarkey J.; Pearson D.G.; Kjarsgaard B.A.; Davidson J.P.; Nowell G.M.; Ottley C.J.; Stammer J.

首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry

【24h】

From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry

机译：从源头到地壳：使用微量样品地球化学追踪金伯利岩和陨石的岩浆演化

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

We present an integrated microsampling trace element and isotopic study of primary minerals within the Jos kimberlite, Canada, in order to observe how different phases record progressive crustal interaction in the evolving kimberlite. Identification of the least contaminated phases provides the best information on kimberlite source geochemistry. We also carried out an analogue study on an olivine melilitite from Saltpetre Kop, South Africa, examining a similar mineral suite, with the addition of melilite. The two studies show that all phases except phenocryst olivine show some evidence of crustal modification. Perovskite has recently been used as a proxy for source isotope composition. Although perovskite may provide a better constraint on the isotopic composition of the kimberlite than the whole rock, it does not necessarily provide the best constraint on the source region. The lower initial ~(87)Sr/~(86)Sr ratio recorded by early crystallising phases in the kimberlite is similar to those of the low-Cr megacryst suite, strengthening the genetic relationship between kimberlite activity and megacryst formation.

机译：我们介绍了加拿大乔斯金伯利岩中主要矿物的微量采样微量元素和同位素研究，目的是观察不同的相如何记录不断演化的金伯利岩中地壳相互作用。鉴定污染最小的相可提供有关金伯利岩来源地球化学的最佳信息。我们还对南非Saltpetre Kop的橄榄石陨石进行了模拟研究，研究了类似的矿物套件，并添加了陨石。两项研究表明，除了橄榄石晶以外的所有相都显示出一些地壳变质的证据。钙钛矿最近已被用作源同位素组成的替代物。尽管钙钛矿可能对金伯利岩的同位素组成比整个岩石提供更好的约束，但不一定对源区提供最佳约束。在金伯利岩的早期结晶阶段记录的较低的初始〜（87）Sr /〜（86）Sr比与低Cr大晶组相似，从而增强了金伯利岩活动与大晶形成之间的遗传关系。

著录项

来源
《Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System》 |2010年第2期|共11页
作者
Malarkey J.; Pearson D.G.; Kjarsgaard B.A.; Davidson J.P.; Nowell G.M.; Ottley C.J.; Stammer J.;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类天文学、地球科学;
关键词
Kimberlite; Megacrysts; Melilitite; Perovskite; Sr isotopes;

机译：金伯利岩;兆晶岩;镁橄榄石;钙钛矿;锶同位素;

相似文献

外文文献
中文文献
专利

1. From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry [J] . Malarkey J., Pearson D.G., Kjarsgaard B.A., Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System . 2010,第1a2期

机译：从源头到地壳：使用微量样品地球化学追踪金伯利岩和陨石的岩浆演化
2. Petrology, geochemistry and genesis of newly discovered Mesoproterozoic highly magnesian, calcite-rich kimberlites from Siddanpalli, Eastern Dharwar Craton, Southern India: products of subduction-related magmatic sources? [J] . N. V. Chalapathi Rao, A. Dongre, G. Kamde Mineralogy and Petrology . 2010,第1a4期

机译：来自印度南部东部达沃克拉通的Siddanpalli的新发现的中生代高度镁质，方解石丰富的金伯利岩的岩石学，地球化学和成因：与俯冲有关的岩浆来源的产物？
3. Multi-proxy isotopic tracing of magmatic sources and crustal recycling in the Palaeozoic to Early Jurassic active margin of North-Western Gondwana [J] . van der Lelij Roelant, Spikings Richard, Gerdes Axel, Gondwana research: international geoscience journal . 2019,第期

机译：古生代岩石源和地壳回收的多功能同位素追踪到西北北部侏罗纪活跃裕度
4. Geochemistry of Molybdenum Element in Co-rich Crusts from the Magellan Seamounts and Tracing of Paleoceanographic Environment [C] . Guoqing You, Jiahua Pan, Wenhong Sun, The proceedings of the Tenth (2013) ISOPE ocean mining amp; gas hydrates symposium . 2013

机译：麦哲伦海山富钴结壳中钼元素的地球化学特征及其古海洋学环境的追踪
5. Magmatic evolution and crustal accretion in the Early Proterozoic: The geology and geochemistry of the Narsajuaq terrane, Ungava Orogen, northern Quebec. [D] . Dunphy, Janet M. 1996

机译：原始元古代的岩浆演化和地壳增生：魁北克北部翁加瓦造山带的Narsajuaq地层的地质和地球化学。
6. Magmatic evolution of a Cordilleran flare-up and its role in the creation of silicic crust [O] . Kevin M. Ward, Jonathan R. Delph, George Zandt, -1

机译：山脉爆发的岩浆演化及其在硅质地壳形成中的作用
7. Isotopic tracing of origin and evolution of magmas in the continental context : relative contributions of mantle sources and continental crust [O] . Roulleau Émilie 2010

机译：大陆背景下岩浆的起源和演化的同位素示踪：地幔源和大陆壳的相对贡献

From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry

摘要

著录项

相似文献

相关主题

期刊订阅