1. Adrich, L. T., 1977, An onshore-offshore geophysical study of southern Colombia and Ecuador, in: Narino; Proyecto Cooperative International, 1973; La Transition Oceano-Continente en el Suroeste de Colombia, Ramirez, J. E., and Aldrich, L. T. ed., Bogotá: Instituto Geofisico, Universidad Javeriana, p. 9 – 15.
2. Anderson, R. N., Clague, D. A., Klitgord, K. D., Marshall, M., and Nishimori, R. K., 1975, Magnetic and petrologic variation along the Galapagos spreading center and their relation to the Galapagos melting anomaly, Geol. Soc. Am. Bull, v. 86, p. 683 – 694.
3. Azad, J ., 1964, The Santa Elena Peninsula (Ecuador): a review of the geology and prospects. Rep. Anglo Ecuadorian Oilfields Ltd no. J.A.7. (unpublished).
4. Baldock, J. W., and Longo, R., 1982, Geology of Ecuador (Explanation of the 1:1,000,000 Geological Map Quito: Dirección General de Geologfa y Minas, Ministerio de Recursos Naturales y Energéticos.
5. Banfield, A. F., Behre, Jr., C. H., and St. Clair, D., 1956, Geology of Isabela (Albemarle) Island, Archipiélago de Col6n (Galápagos), Geol. Soc. Am Bull, v. 67, p. 215 – 234.