Delphine Sourisseau , José Luis Arce , José Luis Macías , Laura E. Beramendi-Orosco , José Juan Carrillo-Mondragón , Galia González-Hernández
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Based on detailed field descriptions, stratigraphic correlations, grain size and componentry analyses, and five new <sup>14</sup>C radiocarbon ages, we reconstruct the eruptive history of the Xilomich eruptive episode deposited south of Pico de Orizaba. Our results indicate that at least ten pyroclastic flows were emplaced during the Xilomich eruptive episode between 8980 and 8170 years BP. These deposits record the occurrence of at least four Vulcanian eruptions and two dome-destruction events, which generated scoria-and-ash and block-and-ash pyroclastic flows. Pyroclastic flows generated by eruptions comparable to the Xilomich episode could extend as far as populated areas like Maltrata, Ciudad Mendoza, and Orizaba, located within a 30-km radius, posing a potential threat to approximately 310,500 inhabitants south of Pico de Orizaba.</div></div>","PeriodicalId":54753,"journal":{"name":"Journal of Volcanology and Geothermal Research","volume":"468 ","pages":"Article 108433"},"PeriodicalIF":2.3000,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Intense explosive activity in the early Holocene at Pico de Orizaba volcano: Revisiting the Xilomich eruptive episode\",\"authors\":\"Delphine Sourisseau , José Luis Arce , José Luis Macías , Laura E. 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Our results indicate that at least ten pyroclastic flows were emplaced during the Xilomich eruptive episode between 8980 and 8170 years BP. These deposits record the occurrence of at least four Vulcanian eruptions and two dome-destruction events, which generated scoria-and-ash and block-and-ash pyroclastic flows. Pyroclastic flows generated by eruptions comparable to the Xilomich episode could extend as far as populated areas like Maltrata, Ciudad Mendoza, and Orizaba, located within a 30-km radius, posing a potential threat to approximately 310,500 inhabitants south of Pico de Orizaba.</div></div>\",\"PeriodicalId\":54753,\"journal\":{\"name\":\"Journal of Volcanology and Geothermal Research\",\"volume\":\"468 \",\"pages\":\"Article 108433\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Volcanology and Geothermal Research\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0377027325001696\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"GEOSCIENCES, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Volcanology and Geothermal Research","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0377027325001696","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
Pico de Orizaba火山是一座位于跨墨西哥火山带最东端的更新世至全新世层状火山。在过去的650万年里,随着火山期到普林尼期的爆炸活动,穹窿生长和崩塌的反复循环发生了。这些火山喷发产生了一系列复杂的碎屑-火山灰、浮石-火山灰、块状-火山灰流和浮石沉降物,与安山岩到英安岩熔岩流相互交织,构成了现代火山大厦(citlalt petl火山)。根据详细的野外描述、地层对比、粒度和成分分析,以及5个新的14C放射性碳年龄,我们重建了Pico de Orizaba以南Xilomich喷发期的喷发历史。结果表明,在8980 ~ 8170年BP之间的Xilomich火山喷发期间,至少有10次火山碎屑流侵位。这些沉积物记录了至少四次火山喷发和两次圆顶破坏事件的发生,这些事件产生了碎屑-火山灰和块状-火山灰火山碎屑流。与西洛米奇火山爆发相媲美的火山喷发产生的火山碎屑流可能会延伸到半径30公里内的人口稠密地区,如马尔特拉塔、门多萨城和奥里萨巴,对奥里萨巴皮科以南约310,500名居民构成潜在威胁。
Intense explosive activity in the early Holocene at Pico de Orizaba volcano: Revisiting the Xilomich eruptive episode
Pico de Orizaba is a Pleistocene to Holocene stratovolcano located in the easternmost part of the Trans-Mexican Volcanic Belt. Repeated cycles of dome growth and collapse, along with Vulcanian to Plinian explosive activity, have occurred during the past 650 ka. These eruptions have produced a complex sequence of scoria-and-ash, pumice-and-ash, block-and-ash flows and pumice fallout, interbedded with andesitic to dacitic lava flows that constitute the modern volcanic edifice (Citlaltépetl volcano). Based on detailed field descriptions, stratigraphic correlations, grain size and componentry analyses, and five new 14C radiocarbon ages, we reconstruct the eruptive history of the Xilomich eruptive episode deposited south of Pico de Orizaba. Our results indicate that at least ten pyroclastic flows were emplaced during the Xilomich eruptive episode between 8980 and 8170 years BP. These deposits record the occurrence of at least four Vulcanian eruptions and two dome-destruction events, which generated scoria-and-ash and block-and-ash pyroclastic flows. Pyroclastic flows generated by eruptions comparable to the Xilomich episode could extend as far as populated areas like Maltrata, Ciudad Mendoza, and Orizaba, located within a 30-km radius, posing a potential threat to approximately 310,500 inhabitants south of Pico de Orizaba.
期刊介绍:
An international research journal with focus on volcanic and geothermal processes and their impact on the environment and society.
Submission of papers covering the following aspects of volcanology and geothermal research are encouraged:
(1) Geological aspects of volcanic systems: volcano stratigraphy, structure and tectonic influence; eruptive history; evolution of volcanic landforms; eruption style and progress; dispersal patterns of lava and ash; analysis of real-time eruption observations.
(2) Geochemical and petrological aspects of volcanic rocks: magma genesis and evolution; crystallization; volatile compositions, solubility, and degassing; volcanic petrography and textural analysis.
(3) Hydrology, geochemistry and measurement of volcanic and hydrothermal fluids: volcanic gas emissions; fumaroles and springs; crater lakes; hydrothermal mineralization.
(4) Geophysical aspects of volcanic systems: physical properties of volcanic rocks and magmas; heat flow studies; volcano seismology, geodesy and remote sensing.
(5) Computational modeling and experimental simulation of magmatic and hydrothermal processes: eruption dynamics; magma transport and storage; plume dynamics and ash dispersal; lava flow dynamics; hydrothermal fluid flow; thermodynamics of aqueous fluids and melts.
(6) Volcano hazard and risk research: hazard zonation methodology, development of forecasting tools; assessment techniques for vulnerability and impact.