Investigation of late Quaternary fault block uplift along the Motagua/Swan Islands fault system: Implications for seismic/tsunami hazard for the Bay of Honduras

Cox, Randel Tom; Lumsden, David N.; Gough, Kevin C.; Lloyd, Roger V.; Talnagi, J.W.

doi:10.1016/j.tecto.2008.05.014

Cited by 12 publications

(15 citation statements)

References 42 publications

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“…Two recent earthquake events off the coast of Honduras (Mw 7Á3, 2009 andMw 7Á6, 2018;USGS, 2018) and a third one in Guatemala (Mw 7Á5, 1976;USGS, 2018) associated with the Motagua/Swan Island Fault System (MSFS), identify this region as a possible source for tsunamigenic earthquakes. Likewise, two late Holocene Mw > 7 earthquakes, have been reported by Cox et al (2008) pre-dating the 2009 and 2018 events, leading these authors to propose a 1000-year recurrence interval for large earthquakes (Mw > 7) associated with the MSFS.…”

Section: Seismicity In the Yucat An Peninsulamentioning

confidence: 75%

“…This is also supported by Cox et al . () who found evidence of a large Mw > 7·0 earthquake triggered in the MSFS in 900 ad , in uplifted coral reef platforms. This event would have affected at least the north coast of Honduras.…”

Section: Discussionmentioning

confidence: 97%

“…Likewise, two late Holocene Mw > 7 earthquakes, have been reported by Cox et al . () pre‐dating the 2009 and 2018 events, leading these authors to propose a 1000‐year recurrence interval for large earthquakes (Mw > 7) associated with the MSFS.…”

Section: Tsunami Versus Hurricane Originmentioning

confidence: 99%

“…It is remarkable that there is no evidence of settlements prior to the Post-Classic period in this coastal area, and it may be that any small settlements that did exist were affected by and covered by the tsunami deposits. This is also supported by Cox et al (2008) who found evidence of a large Mw > 7Á0 earthquake triggered in the MSFS in 900 AD, in uplifted coral reef platforms. This event would have affected at least the north coast of Honduras.…”

Section: Tsunami Age and Palaeoseismic Implicationsmentioning

confidence: 99%

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An extreme wave event in eastern Yucatán, Mexico: Evidence of a palaeotsunami event during the Mayan times

et al. 2019

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The Yucatán Peninsula, Mexico, has typically been considered a tectonically stable region with little significant seismic activity. The region though, is one that is regularly affected by hurricanes. A detailed survey of ca 100 km of the eastern Yucatán and Cozumel coast identified the presence of ridges containing individual boulders measuring >1 m in length. The boulder ridges reach 5 m in height and their origin is associated with extreme wave event activity. Previously modelled tsunami waves from known seismically active zones in the region (Muertos Thrust Belt and South Caribbean Deformed Belt) are not of sufficient scale in the area of the Yucatán Peninsula to have produced the boulder ridges recorded in this study. The occurrence of hurricanes in this region is more common, but two of the most destructive (Hurricane Gilbert 1988 and Hurricane Wilma 2005) produced coastal waves too small to have created the ridges recorded here. In this paper, a new tsunami model with a source area located on the Motagua/Swan Island Fault System has been generated that indicates a tsunami event may have caused the extreme wave events that resulted in the deposition of the boulder ridges.

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Section: Seismicity In the Yucat An Peninsulamentioning

confidence: 75%

Section: Discussionmentioning

confidence: 97%

Section: Tsunami Versus Hurricane Originmentioning

confidence: 99%

Section: Tsunami Age and Palaeoseismic Implicationsmentioning

confidence: 99%

See 2 more Smart Citations

An extreme wave event in eastern Yucatán, Mexico: Evidence of a palaeotsunami event during the Mayan times

et al. 2019

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“…Green lines represent country boundaries. The red square indicates the region of interest (modified from Foley et al, 1990;Caicedo Anchissi and Palma, 1990;Cáceres et al, 2005;Weber et al, 2006;Cox et al, 2008;Ortega-Obregón et al, 2008). C: Large view from a digital elevation model (10 × 10 m) of the studied area.…”

Section: Introductionmentioning

confidence: 99%

Fluid circulation in a complex volcano-tectonic setting, inferred from self-potential and soil CO2 flux surveys: The Santa María–Cerro Quemado–Zunil volcanoes and Xela caldera (Northwestern Guatemala)

Bennati

Finizola²,

Walker

et al. 2011

Journal of Volcanology and Geothermal Research

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International audienceThe region encompassing Santa María, Cerro Quemado, and Zunil volcanoes, close to Quetzaltenango, the second largest city of Guatemala, is volcanically and tectonically complex. In addition, the huge Xela caldera, about 20 km in diameter, crosses this area and links up to the important Zunil fault zone located between the three volcanoes. Two highly active geothermal sites, named Zunil-I and Zunil-II, are also located between these three volcanic edifices at the southeastern boundary of Xela caldera. In order to determine the permeability variations and the main structural discontinuities within this complex volcano-tectonic setting, self-potential and soil CO2 flux measurements have been coupled, with a step of 20 m, along a 16.880 km-long profile crossing the entire area. Two shallow hydrothermal systems, with maximum lateral extensions of 1.5 km in diameter, are indicated by positive self-potential/elevation gradients below Santa María and Cerro Quemado volcanoes. Such small hydrothermal systems cannot explain the intense geothermal manifestations at Zunil-I and Zunil-II. Another minor hydrothermal system is indicated by self-potential measurements on the flank of Santa María along the edge of the Xela caldera. CO2 flux measurements display slight variations inside the caldera and decreasing values crossing outside the caldera boundary. We hypothesize the presence of a magmatic body, inside the southeastern border of Xela caldera, to explain the deeper and more intense hydrothermal system manifested by the Zunil-I and the Zunil-II geothermal fields. This magmatic system may be independent from Santa María and Cerro Quemado volcanoes. Alternatively, the hypothesized Xela magmatic system could have a common magmatic origin with the Cerro Quemado dome complex, consistent with previous findings on regional gas emissions. Sectors bordering the Cerro Quemado dome complex also have high amplitude minima-short wavelength anomalies in self-potential, interpreted as preferential rain water infiltration along faults of major permeability, probably related with the most recent stages of Cerro Quemado dome growth

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Recent sedimentary facies of Roatan (Bay Islands, Honduras), a Caribbean oceanic barrier reef system

Schmitt

Gischler

2016

Facies

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Investigation of late Quaternary fault block uplift along the Motagua/Swan Islands fault system: Implications for seismic/tsunami hazard for the Bay of Honduras

Cited by 12 publications

References 42 publications

An extreme wave event in eastern Yucatán, Mexico: Evidence of a palaeotsunami event during the Mayan times

An extreme wave event in eastern Yucatán, Mexico: Evidence of a palaeotsunami event during the Mayan times

Fluid circulation in a complex volcano-tectonic setting, inferred from self-potential and soil CO2 flux surveys: The Santa María–Cerro Quemado–Zunil volcanoes and Xela caldera (Northwestern Guatemala)

Recent sedimentary facies of Roatan (Bay Islands, Honduras), a Caribbean oceanic barrier reef system

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