Lachlan and New England: fold belts of contrasting magmatic and tectonic development

B. W. Chappell

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    12 Citations (Scopus)


    New South Wales contains significant parts of two fold belts, Lachlan and New England, which provide contrasting examples of tectonic development. The Lachlan belt is of distinctive and unusual character, with little evidence for its development according to the processes of subduction and plate tectonics. The massive ca 400 Ma magmatic events in the Lachlan involved the vertical redistribution of older crust with little production of new crust. England shows excellent evidence for modern-style tectonic development. Also the evolution of New England during the late Palaeozoic involved substantial production of new crust. Granites provide a useful tool in studying the cust because they compositionally image their source rocks in the deep crust. A comparison of the granites in the two belts confirms the distinctive character of the Lachlan. It is suggested that some of the significant structural features of the Lachlan belt may be related to events in New England. -from Author

    Original languageEnglish
    Pages (from-to)47-59
    Number of pages13
    JournalJournal & Proceedings - Royal Society of New South Wales
    Issue number1-2
    Publication statusPublished - 1994


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