Magma flow inferred from AMS fabrics in a layered mafic sill, Insizwa, South Africa

@inproceedings{Ferr2002MagmaFI,
  title={Magma flow inferred from AMS fabrics in a layered mafic sill, Insizwa, South Africa},
  author={Eric C. Ferr{\'e} and C{\'e}cile Bordarier and Julian Saville Marsh},
  year={2002}
}
The Insizwa sill, is a 25-km-diameter, >1000-m-thick layered mafic intrusion, part of the Karoo Igneous Province in South Africa. The peridotitic and gabbronoritic rocks are undeformed and mineral fabrics demonstrably result from magma flow. A horizontal, centimeter-scale model layering is visible in numerous outcrops. Plagioclase crystals are both tabular and elongated. Their preferred orientation, parallel to the layering, forms a foliation and a NW–SE lineation, respectively interpreted as… CONTINUE READING

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