Age measurements on pegmatites and a basic charnockite lens occurring near Lützow-Holm Bay, Antarctica

Details Age measurements on pegmatites and a basic charnockite lens occurring near Lützow-Holm Bay, Antarctica Age measurements on pegmatites and a basic charnockite lens occurring near Lützow-Holm Bay, Antarctica

Mar 1961

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961gecoa..22...94n&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 22, Issue 2-4, pp.94-98

Physics

1

Scientific paper

Rb 87 -Sr 87 age measurements were carried out on large biotite crystals from three granitic pegmatites and a basic charnockite lens occurring near Lützow--Holm Bay, Queen Maud Land. The mean age obtained (~ 515 million years) probably refers to the last major metamorphic episode in this region. The age data are also significant for the interpretation of palaeomagnetic results reported from this area.

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