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http://cicese.repositorioinstitucional.mx/jspui/handle/1007/1724| Short Note. Geochronology of Mexican mineral deposits. IV: the Cinco Minas epithermal deposit, Jalisco | |
| ANTONI CAMPRUBI CANO | |
| Alexander Iriondo MARGARITA LOPEZ MARTINEZ aldo | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| http://dx.doi.org/10.1016/j.lithos.2016.01.019 | |
| Adakitic rocks, Sr–Nd–Pb isotopes, Cenozoic magmatism, Flare-up, Sabzevar Iran | |
| "A major magmatic flare-up is documented along the Bitlis–Zagros suture zone in Eocene–Oligocene times. The Cenozoic magmatism of intraplate Central Iran is an integrant part of this tectono-magmatic scenario. The Cenozoic magmatism of the Sabzevar structural zone consists of mostly intermediate to felsic intrusions and volcanic products. These igneous rocks have calc-alkaline and adakitic geochemical signatures, with nearly coincident zircon U–Pb and mica Ar–Ar ages of ca. 45 Ma. Adakitic rocks have quite low HREE and high Sr/Y ratio, but share most of their geochemical features with the calc-alkaline rocks. The Sabzevar volcanic rocks have similar initial Sr, Nd and Pb isotope ratios, showing their cogenetic nature. Nd model ages cluster tightly around ~ 0.2–0.3 Ga. The geochemistry of the Sabzevar volcanic rocks, along with their isotopic signatures, might strangle that an upper mantle source, metasomatized by slab-derived melts was involved in generating the Sabzevar calc-alkaline rocks. A bulk rock trace element modeling suggests that amphibole–plagioclase–titanite-dominated replenishment-fractional crystallization (RFC) is further responsible for the formation of the middle Eocene Sabzevar adakitic rocks. Extensional tectonics accompanied by lithospheric delamination, possibly assisted by slab break-off and melting at depth was responsible for the Eocene formation of the Sabzevar magmatic rocks and, more in general, for the magmatic “flare-up” in Iran." | |
| Sociedad Geológica Mexicana | |
| 2016 | |
| Artículo | |
| Boletín de la Sociedad Geológica Mexicana | |
| Inglés | |
| Shafaii Moghadama,H.,Rossetti,F.,Lucci,F.,Chiaradiac,M.,Gerdesd,A.,López Martínez,M.,Ghorbanif,G.,Nasrabadyg,M.2016.The calc-alkaline and adakitic volcanism of the Sabzevar structural zone (NE Iran): Implications for the Eocene magmatic flare-up in Central Iran.Boletín de la Sociedad Geológica Mexicana,248-251,517-535.doi:10.1016/j.lithos.2016.01.019 | |
| GEOLOGÍA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos - Geología |
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