气候变化领域集成服务门户(CCPortal): The control of preexisting faults on the distribution, morphology, and volume of monogenetic volcanism in the Michoacán-Guanajuato Volcanic Field

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DOI	10.1130/B35397.1
	The control of preexisting faults on the distribution, morphology, and volume of monogenetic volcanism in the Michoacán-Guanajuato Volcanic Field
	Gómez-Vasconcelos M.G.; Luis Macías J.; Avellán D.R.; Sosa-Ceballos G.; Garduño-Monroy V.H.; Cisneros-Máximo G.; Layer P.W.; Benowitz J.; López-Loera H.; López F.M.; Perton M.
发表日期	2020
ISSN	167606
起始页码	2455
结束页码	2474
卷号	132 期号:2021-11-12
英文摘要	Interactions between volcanic and tectonic processes affect the distribution, morphology, and volume of eruptive products in space and time. The Queréndaro area in the eastern Michoacán-Guanajuato Volcanic Field affords an exceptional opportunity to understand these relationships. Here, a Pleistocene lava plateau and 20 monogenetic volcanoes are vented from an active ENE-striking segment of the Morelia-Acambay fault system. Thirteen scoria cones are aligned along this structure, vented from an extensional gap in between two rotated hanging wall blocks of a listric fault. A new geological map, volcanic stratigraphy, and 40Ar/39Ar dating indicate that this lava plateau and volcanic cluster were emplaced from 0.81 to 0.25 Ma by 11 intermittent eruptive epochs separated by ca. 0.05 Ma, emplacing a total magma volume of 5 km3. Petrography and chemistry of rocks suggest that all volcanic structures were fed by three different magma batches but vented from independent feeder dikes. Our results indicate that preexisting faults exert a strong influence on volcanic spatial and temporal distribution, volcanic morphology, magma volume, and eruptive dynamics in this area. ENE-breached and ENE-elongated scoria cones indicate parallel subsurface fissure and feeder dikes. Additionally, points of maximum fault dilation at depth related to a transtensive state of stress coincide with less fragmented deposits and larger magma volumes. Furthermore, this study raises important questions on the geodynamics of volcano-tectonic interactions possible in similar monogenetic volcanic alignments worldwide. © 2020 Geological Society of America. All Rights Reserved.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184866
作者单位	CONACYT–Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo, Santiago Tapia 403, Morelia, Michoacán 58000, Mexico; Instituto de Geofísica, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico; CONACYT–Instituto de Geofísica, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico; Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo, Santiago Tapia 403, Morelia, Michoacán 58000, Mexico; College of Natural Science, Mathematics and Geophysical Institute, University of Alaska, Fairbanks, Fairbanks, AK 99775, United States; División de Geociencias aplicadas, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, 78216, Mexico
推荐引用方式 GB/T 7714	Gómez-Vasconcelos M.G.,Luis Macías J.,Avellán D.R.,et al. The control of preexisting faults on the distribution, morphology, and volume of monogenetic volcanism in the Michoacán-Guanajuato Volcanic Field[J],2020,132(2021-11-12).
APA	Gómez-Vasconcelos M.G..,Luis Macías J..,Avellán D.R..,Sosa-Ceballos G..,Garduño-Monroy V.H..,...&Perton M..(2020).The control of preexisting faults on the distribution, morphology, and volume of monogenetic volcanism in the Michoacán-Guanajuato Volcanic Field.Bulletin of the Geological Society of America,132(2021-11-12).
MLA	Gómez-Vasconcelos M.G.,et al."The control of preexisting faults on the distribution, morphology, and volume of monogenetic volcanism in the Michoacán-Guanajuato Volcanic Field".Bulletin of the Geological Society of America 132.2021-11-12(2020).