Phlogopite compositions as an indicator of both the geodynamic context of granitoids and the metallogeny aspect in Memve'ele Archean area, northwestern Congo craton
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- 作者：Sylvestre M. Ntombaa ; b ; sylmanto.gary@gmail.com" class="auth_mail" title="E-mail the corresponding author ; sylvestre.martial@yahoo.fr" class="auth_mail" title="E-mail the corresponding author ; Franç ; ois Ndong Bidzanga ; c ; José ; Eric Messi Ottoua ; Franç ; ois Jeannot Goussi Ngalamoa ; Dieudonné ; Bissoa ; Christelle Rufine Magnekou Takamtea ; Joseph Mvondo Ondoaa
- 关键词：Ba-Ti bearing bearing phlogopite ; Oxygen fugacity ; Thermometry ; Memve'ele Archean Ntem complex ; Southern Cameroon
- 刊名：Journal of African Earth Sciences
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：118
- 期：Complete
- 页码：231-244
- 全文大小：3806 K
文摘
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Phlogopites incorporate Ba into their structure both by metasomatism and crystallization mechanism in calc-alkaline melts.
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Temperatures are moderate to high, oxygen fugacities are low and pressure is generally low.
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Ba phlogopite has been formed by magmas in subduction enriched continental lithospheric mantle at weak depth and low geothermal gradient.
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Igneous phlogopites are used as metallogenic indicator of barium.