Holocene volcanic eruptions of the Malpais de Zacapu and its pre-Hispanic settlement history
Por:
Reyes-Guzmán, N, Siebe, C, Chevrel, MO, Pereira, G, Mahgoub, AN, Böhnel, H
Publicada:
1 abr 2023
Ahead of Print:
1 abr 2023
Resumen:
The Michoacan-Guanajuato volcanic field (MGVF) hosts >1,400 monogenetic structures younger than 5 Ma. Here we focus on the Malpais de Zacapu Late Holocene cluster located in the western part of the Zacapu lacustrine basin, situated in the heart of native Purepecha province. The Malpais de Zacapu comprises four distinct eruptions: the Infiernillo lava flow emitted at similar to 1450 b.c.; Malpais Las Viboras, a purely effusive eruption at similar to 1000 b.c.; the Capaxtiro compound lava flow at similar to 150 b.c.; and the most recent eruption, the Malpais Prieto lava flow at similar to a.d. 900. Although these lava flows are not inhabited today, they were densely populated in pre-Hispanic times (before a.d. 1521), especially during the Milpillas phase (a.d. 1200-1450). Volcanological studies (geochemical studies and detailed mapping using high-resolution DEM from LiDAR) allowed us to characterize these eruptions in terms of their magma source (rock chemical composition, mineral assemblage), age (radiocarbon and paleomagnetic dating), magnitude and dynamics (volume, morphology of the deposits), as well as lava flow emplacement duration. The findings allow us to infer the potential impact that these eruptions had on the pre-Hispanic settlement history of the area.
Filiaciones:
Reyes-Guzmán, N:
Univ Nacl Autonoma Mexico, Dept Vulcanol, Inst Geofis, Coyoacan, Mexico
Siebe, C:
Univ Nacl Autonoma Mexico, Dept Vulcanol, Inst Geofis, Coyoacan, Mexico
Chevrel, MO:
Univ Clermont Auvergne, Inst Rech Dev, Ctr Natl Rech Sci, Observ Phys Globe,Lab Magmas & Volcans, Clermont Ferrand, France
Pereira, G:
Ctr Natl Rech Sci, Archeol Amer, Paris, France
Univ Paris 01, Paris, France
Mahgoub, AN:
Univ Nacl Autonoma Mexico, Dept Vulcanol, Inst Geofis, Coyoacan, Mexico
Böhnel, H:
Univ Nacl Autonoma Mexico Juriquilla, Ctr Geociencias, Queretaro, Mexico
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