Enriquillo–Plantain Garden fault zone: Difference between revisions
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The EPGFZ shares approximately half of the relative motion between the [[North American Plate|North American]] and [[Caribbean Plate|Caribbean tectonic plates]] with the [[Septentrional-Orient fault zone]] which runs along the northern side of Hispaniola. Both faults merge into the [[Cayman Trench]] to the west. The fault accommodates about 20.6±1.66 millimeters of lateral motion per year (mm/yr).<ref group=Dolan>Pg. 70</ref> Additionally, a component of compression is present as the North American Plate pushes toward the southwest. This results in vertical deformation manifest in the mountainous terrain of Hispaniola. Some researchers believe that the EPGFZ and the Septentrional-Orient fault zone bound a microplate, dubbed the Gonave Microplate, a {{Convert|190000|km2|abbr=on}} area of the northern Caribbean Plate that is in the process of shearing off the Caribbean Plate and accreting to the North America Plate.<ref group=Dolan>Pg. ix.</ref> |
The EPGFZ shares approximately half of the relative motion between the [[North American Plate|North American]] and [[Caribbean Plate|Caribbean tectonic plates]] with the [[Septentrional-Orient fault zone]] which runs along the northern side of Hispaniola. Both faults merge into the [[Cayman Trench]] to the west. The fault accommodates about 20.6±1.66 millimeters of lateral motion per year (mm/yr).<ref group=Dolan>Pg. 70</ref> Additionally, a component of compression is present as the North American Plate pushes toward the southwest. This results in vertical deformation manifest in the mountainous terrain of Hispaniola. Some researchers believe that the EPGFZ and the Septentrional-Orient fault zone bound a microplate, dubbed the Gonave Microplate, a {{Convert|190000|km2|abbr=on}} area of the northern Caribbean Plate that is in the process of shearing off the Caribbean Plate and accreting to the North America Plate.<ref group=Dolan>Pg. ix.</ref> |
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== Earthquakes == |
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* An earthquake struck along the southern coast of Hispaniola in 1751, <ref group=Chen>Pages 4-44</ref> |
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A [[2010 Haiti earthquake|magnitude 7.0 earthquake]] occurred near [[Port-au-Prince]], Haiti as a result of seismic activity at this fault line on January 12, 2010.<ref>{{Cite news|first=Jeffrey|last=Kluger|url=http://www.time.com/time/health/article/0,8599,1953347,00.html|accessdate=January 20, 2010|title=Could the Haiti Earthquake Have Been Predicted|magazine=[[Time (magazine)|Time]]|publisher=[[Time Warner]]|agency=[[CNN]]|date=January 13, 2010}}</ref> Before that, the largest event associated with this fault zone was the [[1907 Kingston earthquake]] in [[Kingston, Jamaica]].<ref name="18cgc"/> An earthquake also struck along the southern coast of Hispaniola in 1751, <ref group=Chen>Pages 4-44</ref> and a [[1770 Port-au-Prince earthquake|magnitude 7.5 earthquake]] struck Port-au-Prince in 1770. Other historical large earthquakes in 1860, 1761, 1684, 1673, and 1618 are also likely attributed to the EPGFZ, though none of these have been confirmed in the field as associated with this fault.<ref name=USGS>{{cite web|url=http://earthquake.usgs.gov/earthquakes/eqarchives/poster/2010/20100112.php|title=Poster of the Haiti Earthquake of 12 January 2010 - Magnitude 7.0|publisher=[[United States Geological Survey]]|date=January 15, 2010 17:38:35 UTC|accessdate=January 16, 2010}}</ref> |
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* A [[1770 Port-au-Prince earthquake|magnitude 7.5 earthquake]] struck Port-au-Prince in 1770. |
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* The largest event associated with this fault zone was the [[1907 Kingston earthquake]] in [[Kingston, Jamaica]].<ref name="18cgc"/> |
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* A [[2010 Haiti earthquake|magnitude 7.0 earthquake]] occurred near [[Port-au-Prince]], Haiti as a result of seismic activity at this fault line on January 12, 2010.<ref>{{Cite news|first=Jeffrey|last=Kluger|url=http://www.time.com/time/health/article/0,8599,1953347,00.html|accessdate=January 20, 2010|title=Could the Haiti Earthquake Have Been Predicted|magazine=[[Time (magazine)|Time]]|publisher=[[Time Warner]]|agency=[[CNN]]|date=January 13, 2010}}</ref> |
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Other historical large earthquakes in 1860, 1761, 1684, 1673, and 1618 are also likely attributed to the EPGFZ, though none of these have been confirmed in the field as associated with this fault.<ref name=USGS>{{cite web|url=http://earthquake.usgs.gov/earthquakes/eqarchives/poster/2010/20100112.php|title=Poster of the Haiti Earthquake of 12 January 2010 - Magnitude 7.0|publisher=[[United States Geological Survey]]|date=January 15, 2010 17:38:35 UTC|accessdate=January 16, 2010}}</ref> |
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==References== |
==References== |
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Revision as of 12:08, 21 January 2010
The Enriquillo-Plantain Garden fault zone (EPGFZ or EPGZ) is a system of coaxial left lateral-moving strike slip faults which runs along the southern side of the island of Hispaniola, where the Dominican Republic and Haiti are located.[1] The EPGFZ is named for Lake Enriquillo in the Dominican Republic where the line originates, and extends across the southern portion of Hispaniola through the Caribbean Sea to the region of the Plantain Garden River in Jamaica.
Geology
The EPGFZ shares approximately half of the relative motion between the North American and Caribbean tectonic plates with the Septentrional-Orient fault zone which runs along the northern side of Hispaniola. Both faults merge into the Cayman Trench to the west. The fault accommodates about 20.6±1.66 millimeters of lateral motion per year (mm/yr).[Dolan 1] Additionally, a component of compression is present as the North American Plate pushes toward the southwest. This results in vertical deformation manifest in the mountainous terrain of Hispaniola. Some researchers believe that the EPGFZ and the Septentrional-Orient fault zone bound a microplate, dubbed the Gonave Microplate, a 190,000 km2 (73,000 sq mi) area of the northern Caribbean Plate that is in the process of shearing off the Caribbean Plate and accreting to the North America Plate.[Dolan 2]
Earthquakes
- An earthquake struck along the southern coast of Hispaniola in 1751, [Chen 1]
- A magnitude 7.5 earthquake struck Port-au-Prince in 1770.
- The largest event associated with this fault zone was the 1907 Kingston earthquake in Kingston, Jamaica.[1]
- A magnitude 7.0 earthquake occurred near Port-au-Prince, Haiti as a result of seismic activity at this fault line on January 12, 2010.[2]
Other historical large earthquakes in 1860, 1761, 1684, 1673, and 1618 are also likely attributed to the EPGFZ, though none of these have been confirmed in the field as associated with this fault.[3]
References
- ^ a b Mann, Paul, Calais, Eric, Demets, Chuck, Prentice, Carol S., and Wiggins-Grandison, Margaret (March 2008). "Entiquillo-Plantain Garden Strike-Slip Fault Zone: A Major Seismic Hazard Affecting Dominican Republic, Haiti and Jamaica". 18th Caribbean Geological Conference. Retrieved 2010-01-13.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ Kluger, Jeffrey (January 13, 2010). "Could the Haiti Earthquake Have Been Predicted". Time. Time Warner. CNN. Retrieved January 20, 2010.
- ^ "Poster of the Haiti Earthquake of 12 January 2010 - Magnitude 7.0". United States Geological Survey. January 15, 2010 17:38:35 UTC. Retrieved January 16, 2010.
{{cite web}}: Check date values in:|date=(help)
- Bibliography
- Chen, Wai-Fah; Scawthorn, Charles (2003). Earthquake engineering handbook: New directions in civil engineering. CRC Press. ISBN 0849300681.
- ^ Pages 4-44
- Dolan, James F; Mann, Paul (1998). Active Strike-slip and Collisional Tectonics of the Northern Caribbean Plate Boundary Zone. Geological Society of America. ISBN 0813723264.