Petrografía y geoquímica del granitoide Vicin, Macara, Ecuador

Christian Wladimir Romero Cóndor; María Elena  Velíz Zambrano; Marilyn del Cisne  Castillo Jara; Carla Esthefanía  Castillo Rosero; Angie Nicole  Pincay Velazquez; Leyla Lisbeth  Oñate Acurio; Fausto Rodolfo  Carranco Andino; Daniela del Pilar  Cabascango Lara; Ana Belén  Gramal Aguilar; Juan Gonzalo  Torres Cartuche

doi:10.30550/j.agl/1993

Autores/as

Christian Wladimir Romero Cóndor Intituto de Investigación Geológica y Energetica del Ecuador (IIGE) https://orcid.org/0000-0001-9271-4323
María E. Velíz Zambrano Universidad Central del Ecuador https://orcid.org/0000-0002-8863-685X
Marilyn D.C. Castillo Jara Universidad Central del Ecuador https://orcid.org/0000-0001-9406-2824
Carla E. Castillo Rosero Instituto de Investigación Geológico y Energético https://orcid.org/0009-0004-6995-562X
Angie N. Pincay Velazquez Universidad de Guayaquil
Leyla Lisbeth Oñate Acurio Escuela Politécnica Nacional https://orcid.org/0000-0003-4870-1976
Fausto R. Carranco Andino Instituto de Investigación Geológico y Energético https://orcid.org/0000-0001-9412-8942
Daniela D. P. Cabascango Lara Instituto de Investigación Geológico y Energético https://orcid.org/0009-0007-8319-6043
Ana B. Gramal Aguilar https://orcid.org/0000-0002-2216-8846
Juan G. Torres Cartuche Proyecto de Investigación Geológica y Disponibilidad de Recursos Minerales en el Territorio Ecuatoriano. Instituto de Investigación Geológico y Energético – IIGE. Quito-Ecuador https://orcid.org/0009-0000-2679-2147

DOI:

https://doi.org/10.30550/j.agl/1993

Palabras clave:

Vicin, Petrografía, Geoquímica, Ambiente tectónico, Granitoides

Resumen

En Ecuador, la historia del magmatismo de la cuenca Alamor – Lancones es un enigma debido a la ausencia de estudios específicos que caractericen cuerpos ígneos. Esta investigación se centra en el análisis petrográfico y geoquímico del intrusivo Vicin, en la sección Vicin Viejo, ubicado al suroeste de Macará (Ecuador). El granitoide Vicin se encuentra intruyendo a secuencias volcanoclásticas de la Formación Ciano y al intrusivo Potrerillos, aflorando en forma de sills, lacolitos, diques y cúpulas, alineados con la falla inversa Cerro Viejo. Petrográficamente, el intrusivo Vicin es un granitoide rico en cuarzo, su mineralogía es dominada por cuarzo, feldespato potásico, plagioclasa, actinolita, moscovita y granate. Presenta texturas faneríticas, inequigranulares y holocristalinas a hipocristalinas de grano medio a grueso, con la presencia de xenolitos dioríticos y gabróicos. Datos geoquímicos indican que el intrusivo Vicin corresponde a granitos de afinidad calco-alcalina, saturados en sílice y con carácter metalumínico a peralumínico. Las concentraciones de elementos traza y tierras raras sugieren que el magmatismo está vinculado a un ambiente de arco volcánico, característico de una margen continental activa en un dominio orogénico compresivo.

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Biografía del autor/a

Christian Wladimir Romero Cóndor, Intituto de Investigación Geológica y Energetica del Ecuador (IIGE)

Christian Wladimir Romero Cóndor. - Nació en Quito, Ecuador en 1992. Recibió su título de Ingeniero en Geología de la Escuela Politécnica Nacional; ha participado como expositor en las VII Jornadas de Ciencias de la Tierra, EPN en 2017; como expositor en la American Association of Petroleum Geologists, AAPG en 2018 y 2019; en el 8th-ISAG en el 2019, en la Geological Society of America, GSA en 2020. Tiene dos diplomados: Geología del Cuaternario; Estratigrafía y Sedimentología Desde el 2019 es becario del Organismo Internacional de Energía Atómica. Su campo de investigación está relacionado a la Sedimentología y Estratigrafía aplicada a la geología regional y reconstrucciones paleo ambientales. Actualmente trabaja en el Proyecto de Investigación Geológica y Disponibilidad de Ocurrencias Minerales en el Territorio Ecuatoriano desarrollado por el Instituto de Investigación Geológica y Energética

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