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Mineralogy and geochemistry of the Numidian Formation (central-northern Sicily); intra-formation variability and provenance evaluation

Giovanni Barbera, Germana Barone, Paolo Mazzoleni, Diego Puglisi, Hassan M. Khozyem and Osama Mashaly
Mineralogy and geochemistry of the Numidian Formation (central-northern Sicily); intra-formation variability and provenance evaluation
Italian Journal of Geosciences (February 2014) 133 (1): 13-26

Abstract

Mudrocks and sandstones of Numidian Formation in Sicily have been analysed for mineralogical, petrographic, major element and selected trace element compositions to constrain the intraformational variability and the sediment provenance. The mudrocks are characterized by a kaolinite-rich signature while the sandstones have a quartz-arenitic composition. The high Chemical Index of Alteration and Plagioclase Index of Alteration strongly suggest that recycling processes have been responsible for the present compositions. The mudrocks geochemical data suggested a compositional variability function of the paleogeographic depositional environments. In particular, the Numidian Formation of the more external Serra Del Bosco Unit is affected by the terrigenous contribution of epicontinental-type sediments. With regard to provenance, the geochemical data indicate a derivation from post-Archean sedimentary siliciclastic rocks. The contribution of African cratonic sediments was confirmed by the trace elements ratios and by the end-member modelling processed on mudrocks compositional data. In particular the suitability of the Nubian sediments as one of the sources of sediment supply is also attested.


ISSN: 2038-1719
EISSN: 2038-1727
Serial Title: Italian Journal of Geosciences
Serial Volume: 133
Serial Issue: 1
Title: Mineralogy and geochemistry of the Numidian Formation (central-northern Sicily); intra-formation variability and provenance evaluation
Affiliation: Universita di Catania, Dipartimento di Scienze Biologiche, Geologiche ed Ambientali, Catania, Italy
Pages: 13-26
Published: 201402
Text Language: English
Publisher: Societa Geologica Italiana, Rome, Italy
References: 55
Accession Number: 2014-025842
Categories: Sedimentary petrologyGeochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 5 tables, geol. sketch map
N37°30'00" - N38°00'00", E13°00'00" - E14°30'00"
Secondary Affiliation: Universite de Lausanne, CHE, SwitzerlandNational Research Center, EGY, Egypt
Country of Publication: Italy
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Societa Geologica Italiana. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201416
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