globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00531-012-0834-8
Scopus记录号: 2-s2.0-84875400432
论文题名:
Petrology, geochemistry and mineralization of the Las Águilas and Virorco mafic-ultramafic bodies, San Luis Province, Argentina
作者: Ferracutti G.; Bjerg E.; Mogessie A.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2013
卷: 102, 期:3
起始页码: 701
结束页码: 720
语种: 英语
英文关键词: Argentina ; Geochemistry ; Layered ; Mafic-ultramafic ; PGE
Scopus关键词: chalcopyrite ; concentration (composition) ; extensional tectonics ; igneous geochemistry ; mafic rock ; mineralization ; parent body ; pentlandite ; petrogenesis ; petrography ; petrology ; platinum group element ; pyrrhotite ; ultramafic rock ; Argentina ; Las Aguilas ; San Luis
英文摘要: The layered mafic-ultramafic rocks in the Sierras de San Luis, Argentina (Las Águilas, Las Higueras and Virorco), constitute a 3-5-km-wide belt that extends over 100 km from NE to SW. They carry a sulphide mineralization consisting of pyrrhotite, pentlandite and chalcopyrite, in veins and as disseminated to massive ore. Disseminated spinels are frequently associated with the sulphide minerals as well as platinum group minerals. A strong correlation between S, Ni, Co, Cu, Cr, Pt and Pd indicates the presence of one to three levels of mineralization within the ultramafic units. The maximum concentration of these elements coincides with the units containing platinum group minerals (PGM) and spinel group minerals. This clear relationship constitutes a good prospecting guide in the search for layers with high-grade ore, probably associated with deeper stratigraphic levels where ultramafic rocks are dominant. The bulk rock chemistry and concentrations of metals and platinum group elements as well as textural evidence suggest that the parental magma was mafic with tholeiitic affinities and MgO rich. The Las Águilas layered mafic-ultramafic body and the remaining bodies in the area bear similar characteristics to well-known stratified complexes developed in extensional tectonic regimes, as it is the case of Jinchuan (China), Kabanga (Tanzania) and Fiambala (Argentina). © 2012 Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875400432&doi=10.1007%2fs00531-012-0834-8&partnerID=40&md5=63ed4276a258fc9658653c876bc1932d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70591
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Departamento de Geología, INGEOSUR (CONICET-UNS), Universidad Nacional del Sur, San Juan 670, B8000ICN Bahía Blanca, Argentina; Department of Mineralogy and Petrology, Institute of Earth Sciences, University of Graz, Universitaetsplatz 2, 8010 Graz, Austria

Recommended Citation:
Ferracutti G.,Bjerg E.,Mogessie A.. Petrology, geochemistry and mineralization of the Las Águilas and Virorco mafic-ultramafic bodies, San Luis Province, Argentina[J]. International Journal of Earth Sciences,2013-01-01,102(3)
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