| 玲珑花岗质杂岩体形成的物理化学条件及其地质意义 |
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| 关键词:Linglong granite gold deposit physicochemical condition concentration of water Jiaodong |
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| The Forming Physicochemical Conditions of Linglong Granitic Complex and Its Geological Significance |
| The northwestern part of Jiaodong area is an important gold metallogenetic belt in China.Its formation is closely related to Linglong granitic complex.Linglong granitic complex is a polyphase composite rock body,emplaced finally in Yenshan stage.The granitic complex body is mainly composed of Yunshan admellite ,Cuizhao admellite,Linglong gneissic granite,Guojiadian granite and Guojialing granodiorite. The T,p , f O 2 , f H 2 , p H 2O and water content in melt of above_mentioned rock bodies have been studied in this paper.By means of study of physicochemical conditions of Linglong granitic complex,the conclusion can be drawed out as follows:Linglong granitic complex appears to be neither product of migmatization in regional metamorphism nor product of differentiation by crystallization of magma derived from mantle .It is an autochthonous_subautochthonous granitic complex by means of metasomasis and remelting of metamorphic rocks probably Archean. Linglong granitic complex,particularly Guojialing granodiorite bodies have great significance to mineralization of gold. Remelting magmatism,hydrothermal circulation drived by heat from granitic bodies and concentration of water in thermal fluid may be the most important factors to mineralization of gold. |
| LIN Wei-wen,YIN Xiu-lan.1998.The Forming Physicochemical Conditions of Linglong Granitic Complex and Its Geological Significance[J].Acta Geoscientica Sinica,19(1):40-49. |
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