Abstracts Volume IAVCEI – 5IMC, Querétaro, México MMAARAAR The Valle de Santiago maars, México: the record of magma-water fluctuations during the formation of a basaltic maar (La Alberca) and active post-desiccation subsidence at the bottom of a maar lake (Rincón de Parangueo) Intra-conference Field trip 5th International Maar Conference, Querétaro, México José Jorge Aranda-Gómez and Gerardo Carrasco-Núñez Centro de Geociencias, Universidad Nacional autónoma de México, UNAM Campus Juriquilla, Querétaro, Qro., 76100 México. November 20th, 2014 173 IAVCEI – 5IMC, Querétaro, México Abstracts Volume Cover description: Northern wall of La Alberca crater as seen in August 2010. Note that the small “playa-lake” has a slight red color, probably due to the presence of a cyanobacteria bloom in the water. Photo by: José Jorge Aranda-Gómez. Universidad Nacional Autónoma de México Centro de Geociencias Querétaro, Mexico, November 2014 Edition and design: J. Jesús Silva Corona 174 Intra-conference Field Trip The Valle de Santiago maars, México: the record of magma-water fluctuations during the formation of a basaltic maar (La Alberca) and active post-desiccation subsidence at the bottom of a maar lake (Rincón de Parangueo) Jóse Jorge Aranda-Gómez* and Gerardo Carrasco-Núñez** 1 Centro de Geociencias, Universidad Nacional autónoma de México, UNAM Campus Juriquilla, Querétaro, Qro., 76100 México. *
[email protected], **
[email protected] PART I: OVERVIEW Purpose and scope nomenon began during the 1980’s as a consequence of drawdown in