Počet záznamů: 1
Pumpellyite and coexisting minerals in metapelites and veins from the Federico Units in the Internal Zone of the Rif, Spain
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SYSNO ASEP 0340581 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Pumpellyite and coexisting minerals in metapelites and veins from the Federico Units in the Internal Zone of the Rif, Spain Tvůrce(i) Ruiz Cruz, M. D. (ES)
Sanz de Galdeano, C. (ES)
Alvarez-Valero, A. (ES)
Novák, Jiří Karel (GLU-S) RID, SAIZdroj.dok. Canadian Mineralogist. - : Mineralogical Association of Canada - ISSN 0008-4476
Roč. 48, č. 1 (2010), s. 183-203Poč.str. 21 s. Forma vydání WWW - WWW Jazyk dok. eng - angličtina Země vyd. CA - Kanada Klíč. slova Betic-Rif Cordillera ; Alpine metamorphism ; Federico units ; metamorphism (Marocco/Spain) Vědní obor RIV DB - Geologie a mineralogie CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000276033600017 EID SCOPUS 77951729710 DOI https://doi.org/10.3749/canmin.48.1.183 Anotace The discovery of unusual pumpellyite-bearing assemblages in Permo-Triassic phyllites and synfolian veins from the Beni Mezala I unit is important, because it allows the comparison of the P-T conditions deduced from present parageneses. Pumpellyite is considered sensitive indicator of the metamorphic grade. The Federico units (from northern Rif belt) described here are well exposed near Ceuta (Spain enclave), where they are tectonically overlain by the Ghomáride terrane. The chemical data clearly indicate the presence of two populations of pumpellyite: a/ Fe-rich pumpellyite from actinolite-bearing assemblage, in equilibrium with Fe-rich epidote, and b/ pumpellyite richer in Al from actinolite-free veinlets in phyllite. The composition of the first population is typical of the low-grade pumpellyite described in the zeolite and prehnite-pumpellyite facies. This assemblage in pumpellyite-bearing rocks usually indicate pressures of ca 2 kbar and temperatures of ca 250 °C. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2011
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