Nueva cartografía litológica de la estructura de impacto Pantasma y alrededores (Nicaragua)

Autores/as

DOI:

https://doi.org/10.15517/sds2cv98

Palabras clave:

Pantasma, Cráter de impacto, Litología de impacto, Geofísica de impacto, América Central

Resumen

El cráter de Pantasma es una estructura de impacto compleja, caracterizada por un borde circular claramente definido en 14 km, el cual es fácilmente discernible en mapas topográficos. Se ha identificado la presencia de un borde exterior, localizado a 20 km del centro geométrico del cráter. Este estudio, tiene como propósito evaluar el entorno litológico e inferir la ubicación de bordes estructurales con el fin de proporcionar una nueva actualización litológica de la región. La metodología se basa en la integración de registros geológicos y geofísicos terrestres y satelitales, permitiendo correlacionar ambos parámetros y definir el marco geológico correspondiente. Se identificaron materiales de flujo proximal y distal, asociados con impactitas megabrechas monomícticas y brechas polimícticas que contienen fragmentos fundidos alterados (tipo suevita). Desde luego, se obtuvo una firma magnética negativa asociada con la desmagnetización por el efecto del impacto. Además, las inversiones brindaron contrastes de densidad que se relacionan con impactitas de alta densidad. Por lo tanto, este trabajo provee una nueva cartografía litológica del cráter, resolviendo ambigüedades interpretativas que sustentan su génesis como estructura de impacto.

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Gravity Investment Model of the Pantasma Crater

Publicado

2026-03-16