| 非均匀温度场中熔体结晶作用与科马提岩结构成因 |
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| 引用本文： | 谭劲,赵珊茸.非均匀温度场中熔体结晶作用与科马提岩结构成因[J].地质科技情报,1994,13(4):35-40. |
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| 作者姓名： | 谭劲 赵珊茸 |
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| 作者单位： | 中国地质大学 |
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| 摘 要： | 具有重要岩石学和构造学意义的科马提岩，最吸引人同时又最令人困惑的特征之一是它的鬣刺结构和分层构造。本文从喷出地表的岩桨冷凝时温度分布、熔体性质与结晶作用的密切联系，把科马提岩浆喷发形成的岩流作为一个冷凝整体。通过与金属铸锭浇注成形和矿石冶炼生产的比较，发现它们在冷凝固结过程中温度场特征、熔体的性质、结晶能力和结晶方式都有十分相似的特点，并以此为出发点详细解析了科马提岩的鬣刺结构和岩石分层构造的形成
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| 关 键 词： | 科马提岩 温度场 熔体 结晶作用 |
MELT CRYSTALLIZATION AND THE TEXTURE FORMATION OF KOMATIITE IN HETEROGENEOUS TEMPERATURE FIELD |
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| Tan Jin, Zhao Shanrong, Mo Xuanxue.MELT CRYSTALLIZATION AND THE TEXTURE FORMATION OF KOMATIITE IN HETEROGENEOUS TEMPERATURE FIELD[J].Geological Science and Technology Information,1994,13(4):35-40. |
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| Authors: | Tan Jin Zhao Shanrong Mo Xuanxue |
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| Abstract: | Komatiite is of great petrological and tectonic significance.Its most interesting and striking characteristic is the spinifex texture and the layer structure in composition.In this paper,the complex cooling process of komatiite magma as a whole of cooling unit after eruption has been analysed.The analysis is based on the temperature profile,magma characteristics and its crystallization.Comparison with metal casting reveals that the formation process of the spinifex texture and the layer structure in komatiite is very similar to that of the cooling units in metal casting. |
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| Keywords: | Komatiite temperature profile cooling units crystallization spinifex texture melt casting |
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