The massif of anorthosite (black on the drawing) is 10 km in diameter. It is wrapped by a NNE-SSW vertical foliation S2, like a giant porphyroclast. East of the massif, a early foliation S1 is preserved and folded in a megalithon. PhotoID316<\/p>\n
Photograph: j.e.martelat & c.nicollet<\/p>\n
Reference: Martelat, J. E., Nicollet, C., Lardeaux, J. M., Vidal, G., Rakotondrazafy, R. (1997) – Lithospheric tectonic structures developed under High-grade metamorphism in the southern part of Madagascar. Geodinamica Acta, 10, 94-114.<\/p>\n","modified":"2018-06-30T11:08:37","color":"","icon":"","noDetails":false,"noInteraction":false,"image":"https:\/\/outcropedia.tectask.org\/wp-content\/uploads\/2018\/06\/A-giant-porphyroclast-719x1024.jpg","taxonomy":{"webmapp_category":[232,231]},"accessibility":{"mobility":{"check":false,"description":""},"hearing":{"check":false,"description":""},"vision":{"check":false,"description":""},"cognitive":{"check":false,"description":""},"food":{"check":false,"description":""}},"locale":"it","source":"https:\/\/outcropedia.tectask.org\/wp-json\/wp\/v2\/poi\/1508","wp_edit":"http:\/\/outcropedia.tectask.org\/wp-admin\/post.php?post=1508&action=edit","web":"https:\/\/outcropedia.tectask.org\/poi\/a-giant-porphyroclast\/","addr:street":"","addr:housenumber":"","addr:postcode":"","addr:city":"","contact:phone":"","contact:email":"","opening_hours":"","capacity":""},"geometry":{"type":"Point","coordinates":[44.905242919921875,-24.4908978153]}}