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Late-orogenic, mantle-derived, bimodal magmatism in the southern Adelaide Foldbelt, South Australia / by Simon P. Turner.Turner, Simon P. January 1991 (has links)
Copies of author's previously published articles inserted. / Bibliography : leaves 179-196. / v, 196, [43] leaves : ill. (some col.), maps ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Late-orogenic magmas are common to many foldbelts, suggesting a causal link between this thermal pulse and the cessation of deformation. An investigation of such a late-orgenic magnetic suite is made in the southern Adelaide Foldbelt. The suite is biomodal with mafic dykes and plutons accompanied by high-silica granites and rhyolites. It is argued that these mafic and felsic intrusives are both thermally and compositionally related. / Thesis (Ph.D.)--University of Adelaide, Dept. of Geology and Geophysics, 1992
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