 Norkinko amphibolite studied in detail in the southern sector of the Illuminignius metamorphic complex, AIMC, in New Cane, Argentina, indicate that they were derived from a mid-ocean ridge basalt, Mar-B, type protolith and accreted estectonic slices into the metapolitic sequence. Phase relationships, geochemistry of mineral assemblages and geothermal barometry reveal two metamorphic events framed in a counterclockwise PT path, comparable to those previously determined for the metapolitic country rocks and metatructolites outcropping in the same sector. Based on regional correlations in similar petrological, geochemical, geochronological and structural characteristics, it is suggested that the Norkinko amphibolites and neighboring Illuminus metasethementary basement rocks of the AIMC belong to the eastern prolongation of the western series of the coastal accretionary complex of central Chile and west-central Argentina territory. This article was authored by Aireza, Estel Pino, and El Greco.