West Andaman Fault

West Andaman Fault is a major north–south trending strike-slip fault zone that forms the boundary between the forearc, developed above the highly oblique subduction zone between the Indian Plate and the Burma Plate, and the Andaman Sea. The Andaman Sea is a back-arc basin developed as a pull-apart between the right-lateral strike-slip Sagaing and West Andaman faults.^[1] Different segments of the fault ruptured in both foreshocks and aftershocks surrounding the 2004 Indian Ocean earthquake and tsunami event. The northern end is thought to connect to the Sagaing Fault and the southern end to the Great Sumatran fault. The two magnitude 8 events in 2004 and 2005, are located on either side of West Andaman Fault indicate that fault played a critical role in controlling the rupture pattern of both the 2004 and 2005 earthquakes.^[1]

References

^
doi:10.1029/2006GL028730

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[agupubs2006-1] 
doi:10.1029/2006GL028730

[1]

v t e Tectonic plates of Indochina (Eurasian Plate-Indian Plate Convergence Zone)
Plate tectonics	Andaman microplate Burma Plate Eurasian Plate Indian Plate Sunda Plate Yangtze Plate
Faults and rift zones	Kyaukkyan Fault Mae Chan Fault Red River Fault Sagaing Fault Three Pagodas Fault West Andaman Fault
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v t e Earthquakes and plate tectonics in Myanmar
Pre-20th century	1762 Rahkine 1839 Innwa 1858 Prome
20th century	1912 Taunggyi 1930 Bago 1930 Pyu 1931 Myitkyina 1946 Sagaing 1950 Assam–Tibet 1956 Sagaing 1975 Bagan 1976 Yunnan 1988 Myanmar–India 1988 Lancang–Gengma 1995 Menglian 1997 Chittagong
21st century	2003 Taungdwingyi 2004 Indian Ocean 2009 Coco Islands 2011 Yingjiang 2011 Tarlay 2012 Thabeikkyin 2016 Imphal 2016 Chauk 2016 Kani
Fault zones and tectonic plates	Sagaing Fault Kyaukkyan Fault Three Pagodas Fault West Andaman Fault Kabaw Fault Sunda megathrust Main Himalayan Thrust Main Frontal Thrust Burma Plate Sunda Plate Indian Plate Eurasian Plate