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Pb, Sr, And Nd Isotopic Characteristics Of A Variety Of Lithologies From The Guerrero Composite Terrane, West-Central Mexico: Constraints On Their Origin, Adriana Potra, Rosemary Hickey-Vargas, Andrew W. Macfarlane, Vincent J.M. Salters
Pb, Sr, And Nd Isotopic Characteristics Of A Variety Of Lithologies From The Guerrero Composite Terrane, West-Central Mexico: Constraints On Their Origin, Adriana Potra, Rosemary Hickey-Vargas, Andrew W. Macfarlane, Vincent J.M. Salters
Department of Earth and Environment
Lead, Sr, and Nd isotope analyses of Mesozoic and Cenozoic rocks from the southern part of Guerrero terrane in Mexico provide a better understanding of their origin. Metamorphic rocks collected south of Arteaga (Zihuatanejo terrane) have similar Pb isotope values to basement rocks from Nevado de Toluca, indicating a possible connection of the basement in these areas. Lead isotope ratios of rocks from the Mesozoic Guerrero and Paleozoic Mixteca terranes are similar to those of north Peruvian Mesozoic Olmos and Paleozoic Marañón complexes, but more radiogenic than Grenville-age basement of southeast Mexico (Guichicovi complex) and north Colombia (Garzón massif and …