Late Holocene tectonic land-level changes and tsunamis at Mitla lagoon, Guerrero, Mexico

M.T. Ramirez-Herrera, Andrew Cundy, V. Kostoglodov, M. Ortiz

Research output: Contribution to journalArticle

Abstract

Sedimentological, stratigraphic and geochemical data record abrupt land elevation change, coastal subsidence, and changes in the salinity of Mitla lagoon that may be associated with a tsunami around 3400-3500 yr BP. The observations are supported by microfossil data (pollen, diatoms and phytolith) from other studies on the Guerrero coast. Stratigraphic data indicate an average Late Holocene sedimentation rate of about 1 mm/yr. Short-term sea-level records from 1952 of tide gauge data are compared with expected coseismic coastal deformation, and long-term records of coastal deformation from the sediment record c. 3500 yr BP. Recent large earthquakes in the Central Mexico subduction zone ruptured an area of limited width of about ~60 km, but some prehistoric earthquakes may have ruptured the entire coupled plate interface almost up to the trench, thus generating significant coastal subsidence and possibly a large tsunami.
Original languageEnglish
Pages (from-to)195-209
Number of pages15
JournalGeofisica Internacional
Volume48
Issue number2
Publication statusPublished - 2009

Fingerprint

tsunami
lagoon
Holocene
tectonics
subsidence
phytolith
earthquake
tide gauge
microfossil
sedimentation rate
subduction zone
trench
diatom
pollen
sea level
salinity
land
coast
sediment

Keywords

  • Sea–level changes, holocene, earthquakes, tsunami, tropical coastal lagoons, paleoenvironments

Cite this

Ramirez-Herrera, M. T., Cundy, A., Kostoglodov, V., & Ortiz, M. (2009). Late Holocene tectonic land-level changes and tsunamis at Mitla lagoon, Guerrero, Mexico. Geofisica Internacional, 48(2), 195-209.
Ramirez-Herrera, M.T. ; Cundy, Andrew ; Kostoglodov, V. ; Ortiz, M. / Late Holocene tectonic land-level changes and tsunamis at Mitla lagoon, Guerrero, Mexico. In: Geofisica Internacional. 2009 ; Vol. 48, No. 2. pp. 195-209.
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Ramirez-Herrera, MT, Cundy, A, Kostoglodov, V & Ortiz, M 2009, 'Late Holocene tectonic land-level changes and tsunamis at Mitla lagoon, Guerrero, Mexico', Geofisica Internacional, vol. 48, no. 2, pp. 195-209.

Late Holocene tectonic land-level changes and tsunamis at Mitla lagoon, Guerrero, Mexico. / Ramirez-Herrera, M.T.; Cundy, Andrew; Kostoglodov, V.; Ortiz, M.

In: Geofisica Internacional, Vol. 48, No. 2, 2009, p. 195-209.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Late Holocene tectonic land-level changes and tsunamis at Mitla lagoon, Guerrero, Mexico

AU - Ramirez-Herrera, M.T.

AU - Cundy, Andrew

AU - Kostoglodov, V.

AU - Ortiz, M.

PY - 2009

Y1 - 2009

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AB - Sedimentological, stratigraphic and geochemical data record abrupt land elevation change, coastal subsidence, and changes in the salinity of Mitla lagoon that may be associated with a tsunami around 3400-3500 yr BP. The observations are supported by microfossil data (pollen, diatoms and phytolith) from other studies on the Guerrero coast. Stratigraphic data indicate an average Late Holocene sedimentation rate of about 1 mm/yr. Short-term sea-level records from 1952 of tide gauge data are compared with expected coseismic coastal deformation, and long-term records of coastal deformation from the sediment record c. 3500 yr BP. Recent large earthquakes in the Central Mexico subduction zone ruptured an area of limited width of about ~60 km, but some prehistoric earthquakes may have ruptured the entire coupled plate interface almost up to the trench, thus generating significant coastal subsidence and possibly a large tsunami.

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M3 - Article

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JO - Geofisica Internacional

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Ramirez-Herrera MT, Cundy A, Kostoglodov V, Ortiz M. Late Holocene tectonic land-level changes and tsunamis at Mitla lagoon, Guerrero, Mexico. Geofisica Internacional. 2009;48(2):195-209.