Revista geológica de América central ISSN Impreso: 0256-7024 ISSN electrónico: 2215-261X

OAI: https://revistas.ucr.ac.cr/index.php/geologica/oai
Geology of the Metropolitan Area of San Salvador (1:50 000), El Salvador
Sucesión de tefra, de abajo hacia arriba: escoria G1, tobas color café, paleosuelo, tefra TB2, paleosuelo, escoria G2, tefra fina B1, paleosuelo, tefra; TBJ
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Keywords

Geological map
Lithostratigraphy
Lithology
Volcanic facies
Tephras
Tuffs
Rocks
Mapa geológico
Litoestratigrafía
Litología
Facies volcánicas
Tefras
Tobas
Rocas

How to Cite

Lexa, J., Šebesta, J., Hernández, W., Chavez, J. A., Vásquez, M. E., & Alfaro, I. A. (2021). Geology of the Metropolitan Area of San Salvador (1:50 000), El Salvador. Revista geológica De América Central, 66, 1–23. https://doi.org/10.15517/rgac.v66i0.49972

Abstract

The geological map of the Metropolitan Area of ​​San Salvador has been updated through field work, dating tests and review of existing bibliography at a scale of 1: 50000. This has made it possible to categorize volcanic bodies and deposits according to recent advances in lithostratigraphy and geological mapping. The geological map follows the basic lithostratigraphy of the Bálsamo, Cuscatlán and San Salvador formations. The members of the Bálsamo Formation (Upper Miocene - Pliocene) represent the remains of extensive volcanoes of andesitic/basaltic composition with lava flows and epiclastic complexes of volcanic rocks. The Cuscatlán Formation (Pliocene-Pleistocene) comprises silicic ignimbrites, tuffs, as well as related epiclastic rocks, in addition to contemporary andesitic/basaltic effusive rocks. The San Salvador Formation (Upper Pleistocene-Holocene) includes recent products from the San Salvador stratovolcano and the Ilopango caldera. Geological mapping helps to understand the best conditions for the care of natural resources and sustainability.

https://doi.org/10.15517/rgac.v66i0.49972
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Copyright (c) 2023 Jaroslav Lexa, Jiři Šebesta, Walter Hernández, José A. Chavez, Mauricio E. Vásquez, Ingrid A. Alfaro

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