The chemistry of gabbro/amphibolite transitions in South Norway |
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| Authors: | R B Elliott |
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| Institution: | (1) Department of Geology, University of Nottingham, Nottingham, England |
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| Abstract: | Sixteen gabbro (hyperite)/amphibolite pairs were collected from geological situations where it seems clear that the amphibolite formed from material similar in composition to that of the adjacent hyperite.Major element analyses show that the hyperite to amphibolite transition was not an isochemical one. K2O, H2O, P2O5 and Fe2O3 were increased strongly. CaO and FeO were diminished; SiO2 may have been also. TiO2, total iron, MgO, MnO and Na2O were static; so probably was Al1O3. |
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