Diopsiditi di tipo alpino associate con scarse duniti e peridotiti si trovano lungo una faglia regionale e sono interposte fra scisti pelitici di basso grado metamorfico e gneiss di alto grado. Quest'ultimi contengono plagioclasio, granato, salite e/o orneblenda, quarzo e talvolta anche clinozoisite. Alcuni di essi sono granoblastici, privi di plagioclasio e sono composti prevalentemente di granato o orneblenda, o, più raramente da pirosseni. Nel lavoro sono contenute descrizioni petrografiche accompagnate da 8 analisi semi quantitative. Non sembra che le rocce ultramafiche siano in relazione genetica con gli gneiss. Quest'ultimi sembrano essere rocce da mafiche a ultramafiche - principalmente gabbri olivinici - che hanno subito un metamorfismo di alto grado a facies di anfibolite con almandino, ma con alcune rocce a facies di anfibolite con epidoto e di granulite.
@article{RLINA_1977_8_63_3-4_259_0,
author = {Aziz Ahmed Qureshi and M. Qasim Jan},
title = {The ultramafic and high-grade metamorphic rocks of Jijal, Indus Kohistdn Swat, NW Pakistan},
journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti},
volume = {62},
year = {1977},
pages = {259-268},
language = {en},
url = {http://dml.mathdoc.fr/item/RLINA_1977_8_63_3-4_259_0}
}
Ahmed Qureshi, Aziz; Jan, M. Qasim. The ultramafic and high-grade metamorphic rocks of Jijal, Indus Kohistdn Swat, NW Pakistan. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 62 (1977) pp. 259-268. http://gdmltest.u-ga.fr/item/RLINA_1977_8_63_3-4_259_0/
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