地質(zhì)外文文獻(xiàn)翻譯中英文對照(已修改)
2025-08-15 02:14 本頁面
【正文】 精品資料長安大學(xué)資源學(xué)院英語文獻(xiàn)翻譯 學(xué) 院 地球科學(xué)與資源學(xué)院 專 業(yè) 資源勘查工程 學(xué)生姓名 張?zhí)? 學(xué) 號 201127020308 指導(dǎo)教師 張亞敏 2015年6月18日Title:Orthomagmatic ore deposits ore depositsThe magma contains a certain number of metal and volatile ponents of the silicate melt. All kinds of magma after crystallization and differentiation, make the forming materials dispersed in the magma gathered and formed this deposits is called magmatic deposits.Magmatic deposits formed in the magmatic stage, the source of the material of the deposit is the main orebearing magma.Magmatic deposits is the product of the magma by crystallization and differentiation, and generally have the following properties: Deposits have the mainly relationship with the mafic and ultramafic a small number of magmatic deposits with alkaline rocks or magmatic carbonatiterelated. Mineralization and diagenesis often begin at the same this is typical of syngenetic ore deposits. Few mineralization of the magmatic deposits may be continued to a later time, but generally does not exceed a total period of magmatic activity. The magmatic deposits ore body majority present stratiform, lenticular and podiform and so they produced in the magma body,and the wall rock of containing ore is the mother cases,orebody presenting vein and stockwork enter the wall rock which outside of the mother rock Between the ore body and the wall rock generally is gradual change or rapid gradual change penetration magmatic deposits have the clear boundaries with the wall rock. Except the rare and rare earth elements deposits of the magmatic carbonatite due to special causes have some alteration about the wall rock,the vast majority of
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