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Wilkinson, J. F. G. (1968) The magmatic affinities of some volcanic rocks from the Tweed Shield Volcano, S.E. Queensland — N.E. New South Wales. Geological Magazine, 105 (3) 275-289 doi:10.1017/s0016756800052298

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Reference TypeJournal (article/letter/editorial)
TitleThe magmatic affinities of some volcanic rocks from the Tweed Shield Volcano, S.E. Queensland — N.E. New South Wales
JournalGeological Magazine
AuthorsWilkinson, J. F. G.Author
Year1968 (June)Volume105
Issue3
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756800052298Search in ResearchGate
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Mindat Ref. ID249934Long-form Identifiermindat:1:5:249934:9
GUID0
Full ReferenceWilkinson, J. F. G. (1968) The magmatic affinities of some volcanic rocks from the Tweed Shield Volcano, S.E. Queensland — N.E. New South Wales. Geological Magazine, 105 (3) 275-289 doi:10.1017/s0016756800052298
Plain TextWilkinson, J. F. G. (1968) The magmatic affinities of some volcanic rocks from the Tweed Shield Volcano, S.E. Queensland — N.E. New South Wales. Geological Magazine, 105 (3) 275-289 doi:10.1017/s0016756800052298
In(1968, June) Geological Magazine Vol. 105 (3) Cambridge University Press (CUP)
Abstract/NotesSUMMARYSome basaltic and andesitic rocks from the Tweed Shield Volcano are tholeiitic in character as evidenced by their chemistry and the nature of their pyroxenes inferred from optical data. A common mineral assemblage in the more basic members is olivine-clinopyroxene-plagioclase-opaques-(glass). Petrographic criteria that characterize tholeiites are often lacking, and some of the more basic lavas appear to link the more typical tholeiites with transitional olivine basalts. Many of the Tweed volcanic rocks are more potassic than similar rocks in other tholeiitic sequences. The likelihood of differing lineages in the shield area is noted.


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