Contents lists available at ScienceDirect Journal of South American Earth Sciences journal homepage: www.elsevier.com/locate/jsames Eruptive chronology of monogenetic volcanoes northwestern of Morelia – Insights into volcano-tectonic interactions in the central-eastern Michoacán- Guanajuato Volcanic Field, México Denis-Ramón Avellán a,∗ , Guillermo Cisneros-Máximo b , José Luis Macías b , Martha Gabriela Gómez-Vasconcelos c , Paul W. Layer d , Giovanni Sosa-Ceballos b , Jasinto Robles-Camacho e a CONACYT- Instituto de Geofísica, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, 58190, Morelia, Michoacán, Mexico b Instituto de Geofísica, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, 58190, Morelia, Michoacán, Mexico c CONACYT-Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico d College of Natural Science, Mathematics and Geophysical Institute, University of Alaska, Fairbanks, Fairbanks, AK, 99775, USA e Instituto Nacional de Antropología e Historia (INAH), Laboratorio de Arqueometría del Occidente, Centro INAH Michoacán, Av. Madero oriente 369, Centro, 58000, Morelia, Michoacán, Mexico ARTICLEINFO Keywords: Structural control Eruptive chronology Monogenetic volcanoes Small shield volcanoes Michoacán-Guanajuato Morelia ABSTRACT Twelve monogenetic volcanoes formed during the last 7 Ma within the Tarímbaro graben, northwest of the city of Morelia, in the central-eastern part of the Michoacán-Guanajuato volcanic field (México). These include four scoria cones (Pelón, Tetillas, Jamanal, and Parastaco), four lava domes (La Cruz, Divisadero, Estadio, and Tetillas), two small shield volcanoes (Quinceo and Tetillas) and two lava flows (Cuto and Cerritos). Based on a detailed geological map and stratigraphy aided by new 40 Ar/ 39 Ar and 14 C radiometric dates, and whole-rock chemical analyses, we established the eruptive chronology of these monogenetic volcanoes. These volcanoes were built upon four early Miocene successions of regional volcanism named Cuitzeo lavas (18.7 Ma), Cuitzeo ignimbrite (17.4 Ma), Atécuaro ignimbrite (16.8 Ma), and Punhuato lavas (16.3 Ma). Late Miocene to Pliocene activityconsistedoftheLaCruz,Divisadero,andEstadiodomesandtheCutolavaflow(6.7–3.1Ma).Pleistocene activityincludedtheCuitzeofalloutpyroclasticsequence(1.48Ma),theQuinceosmallshieldvolcano(1.36Ma), the Pelón scoria cone (0.84 Ma), the Tetillas small shield volcano, two lava domes and a scoria cone (0.56–0.34 Ma), the Jamanal and Parastaco scoria cones and the Cerritos lava flow (0.11 Ma). Magma volumes from these volcanoes vary from<0.1 to 4 km 3 . We ascribe their variety of magma volumes, morphology, volcanicstyles,andspatio-temporaldistributiontotectonicchangesandevolutionoftheENETarímbarograben, whose faults belong to the Tarímbaro-Álvaro Obregón fault segment in the central part of the Morelia-Acambay Fault System. Quinceo (2 km 3 ) and Tetillas (4 km 3 ) small shield volcanoes are by far the most voluminous centersdominatingthelandscapeofthecityofMorelia.Allrocksampleshavecompositionsvaryingfrom49.3to 61.6 wt % in silica with medium-K contents (0.43–1.83 wt %). 1. Introduction Monogenetic volcanic fields are defined as a group of single-erup- tion vents with similar characteristics and a related spatio-temporal distribution (Walker, 2000; Macías and Capra, 2005; Németh, 2010; Rodríguezetal.,2010; LeCorvecetal.,2013; SmithandNémeth,2017; Németh and Kereszturi, 2015; Németh et al., 2017). Yet, some volcanic fields worldwide are characterized by their wide variety of morpholo- gies, magma volumes and eruptive styles as the Michoacán-Guanajuato (Hasenaka and Carmichael, 1985b; Guilbaud et al., 2012), San Fran- cisco, USA (Robinson, 1913), Auckland, New Zealand (Lindsay et al., 2011) and Harrat Rahat, Saudi Arabia (Murcia et al., 2015); with most of these varieties attributed to compositional changes within a single volcano and across the field (e.g., Németh and Kereszturi, 2015), but rarely related to regional tectonics (e.g., Connor et al., 1992; Takada, 1994) as the Garrotxa, Spain (Bolós et al., 2015), Chain de Puy, France (Petronis et al., 2013), and Nejapa in Nicaragua (Avellán et al., 2012). Understanding the local tectonic and volcanic evolution is a significant https://doi.org/10.1016/j.jsames.2020.102554 Received 10 October 2019; Received in revised form 14 February 2020; Accepted 5 March 2020 ∗ Corresponding author. E-mail address: denisavellan@gmail.com (D.-R. Avellán). Journal of South American Earth Sciences 100 (2020) 102554 0895-9811/ © 2020 Elsevier Ltd. All rights reserved. T