Granite Genesis - In-Situ Melting and Crustal Evolution
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Granitic rocks are a major component of the continental crust and the many and complex problems of their origin that have confronted geologists for over 200 years still are presenting challenges today. Current ideas of granite formation involve lower crustal melting, segregation, ascent (as dykes or diapirs) and emplacement in the upper crust. In this book we suggest an alternative model for the origin of granite in terms of in-situ melting-intracrustal convection that physically determines the process from partial melting of mid-upper crustal rocks to formation of a convecting magma layer. We illustrate the model using geological, geochemical and geophysical studies from Australia, North…
Copyright year: 2007
Publication date: 6/26/2007
Size: 6.00" wide x 9.00" long x 0.75" tall
|Crustal melting : experiments and conditions|
|In situ melting and intracrustal convection : granite magma layers|
|Geological evidence for in situ melting origin of granite layers|
|Differentiation of magma layer : geochemical considerations|
|Mineralisation related to in situ granite formation|
|Heat source for crustal magma layers : tectonic models|
|Geological effects of crystallisation of a crustal granite magma layer : SE China|
|Material and element cycling of the continental crust and summary|
|Map of SE China showing provinces|
|Results of experimental rock melting|