Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico
The March 29 to April 4, 1982 eruption of El Chichón volcano in southeastern Mexico was characterized by a complex interplay between magmatic and phreatomagmatic eruptive events, that were responsible for the generation of plinian columns and concentrated and diluted density currents. Revision of t...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universidad Nacional Autónoma de México
2018-04-01
|
| Series: | Revista Mexicana de Ciencias Geológicas |
| Subjects: | |
| Online Access: | https://rmcg.unam.mx/index.php/rmcg/article/view/852 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850161412685430784 |
|---|---|
| author | Teresa Scolamacchia José Luis Macías |
| author_facet | Teresa Scolamacchia José Luis Macías |
| author_sort | Teresa Scolamacchia |
| collection | DOAJ |
| description |
The March 29 to April 4, 1982 eruption of El Chichón volcano in southeastern Mexico was characterized by a complex interplay between magmatic and phreatomagmatic eruptive events, that were responsible for the generation of plinian columns and concentrated and diluted density currents. Revision of the stratigraphy indicates that the interaction between magma and hydrothermal acid water played an important role during the last phases of the eruption. Diluted density currents were widely dispersed, mainly to the eastern side of the volcano due to the particular topographic conditions in this area. The overall distribution of pyroclastic surge deposits reflects the dispersal of fallout deposits determined by the direction of tropospheric (ENE) winds at the time of the eruption. This observation suggests that near-ground winds were strong and blowing in the same direction as high altitude (<18 km) winds, thus enhancing the dispersion of the vanishing portions of the pyroclastic density currents.
|
| format | Article |
| id | doaj-art-8506f87bf060400caef3c1dcf926ce56 |
| institution | OA Journals |
| issn | 1026-8774 2007-2902 |
| language | English |
| publishDate | 2018-04-01 |
| publisher | Universidad Nacional Autónoma de México |
| record_format | Article |
| series | Revista Mexicana de Ciencias Geológicas |
| spelling | doaj-art-8506f87bf060400caef3c1dcf926ce562025-08-20T02:22:50ZengUniversidad Nacional Autónoma de MéxicoRevista Mexicana de Ciencias Geológicas1026-87742007-29022018-04-01222Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, MexicoTeresa Scolamacchia0José Luis Macías1Instituto de Geofísica, Universidad Nacional Autónona de México, Ciudad Universitaria, Coyoacán 04510, México D.F., México.Instituto de Geofísica, Universidad Nacional Autónona de México, Ciudad Universitaria, Coyoacán 04510, México D.F., México. The March 29 to April 4, 1982 eruption of El Chichón volcano in southeastern Mexico was characterized by a complex interplay between magmatic and phreatomagmatic eruptive events, that were responsible for the generation of plinian columns and concentrated and diluted density currents. Revision of the stratigraphy indicates that the interaction between magma and hydrothermal acid water played an important role during the last phases of the eruption. Diluted density currents were widely dispersed, mainly to the eastern side of the volcano due to the particular topographic conditions in this area. The overall distribution of pyroclastic surge deposits reflects the dispersal of fallout deposits determined by the direction of tropospheric (ENE) winds at the time of the eruption. This observation suggests that near-ground winds were strong and blowing in the same direction as high altitude (<18 km) winds, thus enhancing the dispersion of the vanishing portions of the pyroclastic density currents. https://rmcg.unam.mx/index.php/rmcg/article/view/852pyroclastic density currents, 1982 eruption, El Chichón, Chiapas, Mexico. |
| spellingShingle | Teresa Scolamacchia José Luis Macías Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico Revista Mexicana de Ciencias Geológicas pyroclastic density currents, 1982 eruption, El Chichón, Chiapas, Mexico. |
| title | Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico |
| title_full | Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico |
| title_fullStr | Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico |
| title_full_unstemmed | Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico |
| title_short | Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico |
| title_sort | distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of el chichon volcano chiapas mexico |
| topic | pyroclastic density currents, 1982 eruption, El Chichón, Chiapas, Mexico. |
| url | https://rmcg.unam.mx/index.php/rmcg/article/view/852 |
| work_keys_str_mv | AT teresascolamacchia distributionandstratigraphyofdepositsproducedbydilutedpyroclasticdensitycurrentsofthe1982eruptionofelchichonvolcanochiapasmexico AT joseluismacias distributionandstratigraphyofdepositsproducedbydilutedpyroclasticdensitycurrentsofthe1982eruptionofelchichonvolcanochiapasmexico |