Person:
Galindo Francisco, María Del Carmen

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First Name
María Del Carmen
Last Name
Galindo Francisco
URI
https://hdl.handle.net/20.500.14352/81297
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Geológicas
Department
Mineralogía y Petrología
Area
Petrología y Geoquímica
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1997 - 199922000 - 20041
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End date: 2009 × Subject: 550.4(82) ×

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    El gabro coronítico de la Sierra de Valle Fértil, Sierras Pampeanas Argentina: quimica general y condiciones P-T de la etapa coronítica
    (Boletín de la Sociedad Española de Mineralogía, 1999) Baldo, Edgardo G.; Murra, Juan Alberto; Casquet Martín, César; Galindo Francisco, María Del Carmen; Saavedra, Julio
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    Age, Sr and Nd-Isotope Systematics, and Origin of Two Fluorite Lodes, Sierras Pampeanas, Argentina
    (International geology review, 1997) Galindo Francisco, María Del Carmen; Pankhurst, R.J.; Casquet Martín, César; Coniglio, Jorge; Baldo, Edgardo G.; Rapela, Carlos W.; Saavedra, Julio
    Fluorite mineralization at the La Nueva and Bubu mines yields Sm-Nd ages of 131 ± 22 and 117 ± 26 Ma, respectively. Thus, the mineralization most probably is related to a late Gondwanian (Lower Cretaceous) extensional and magmatic event that affected the Sierras Pampeanas basement during the opening of the Atlantic Ocean. Hydrothermal fluids involved in the formation of the fluorite probably were of meteoric origin, their isotopic composition (Sr and Nd) resulting largely from the incongruent dissolution of feldspars in the host porphyritic granites.
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    Grenvillian massif-type anorthosites in the Sierras Pampeanas
    (Journal of the Geological Society, 2004) Casquet Martín, César; Pankhurst, R.J.; Rapela, Carlos W.; Galindo Francisco, María Del Carmen; Dahlquist, Juan A.; Baldo, Edgardo G.; Saavedra, Julio; González Casado, José Manuel; Fanning, C.M.
    We report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U–Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 Ma for igneous emplacement and 431 ± 40 Ma for metamorphism. These anorthosites are petrologically and geochemically comparable with those of the Grenville province of Laurentia. Palaeogeographical reconstructions of Rodinia at 1.0–1.1 Ga suggest that the Sierras Pampeanas anorthosites were part of a large anorthosite province in the late Mesoproterozoic.