Silakhor Plain () is the largest flat land in
Lorestan province of
Iran
Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...
. Located in the northeast of Lorestan, Silakhor covers most of the populated parts of
Borujerd,
Dorud and
Azna counties.

Geography
Silakhor is a
grassland
A grassland is an area where the vegetation is dominance (ecology), dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes such as clover, and other Herbaceo ...
plain
In geography, a plain, commonly known as flatland, is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and ...
expanded northwest to south east along with the elevated reliefs of
Zagros
The Zagros Mountains are a mountain range in Iran, northern Iraq, and southeastern Turkey. The mountain range has a total length of . The Zagros range begins in northwestern Iran and roughly follows Iran's western border while covering much of s ...
mountains. Starting 15 km north of the city of
Borujerd in
Oshtorinan District, this large geographical feature ends in south of Azna county. Silakhor is divided into two sections: Upper Silakhor and Lower Silakhor. Upper Silakhor is a smaller area located between
Oshtorinan town and Borujerd city. Lower Silakhor starts from Borujerd city and after passing the town of
Dorud, it ends in south of
Azna town where Oshtorankuh is located.
Geology
Geology of Silakhor is important as this plain is a border of Zagros and Central Iran tectonic plates.
Earthquakes
Being the marginal junction of Elevated Zagros and the Inner Highlands, Silakhor is an active earthquake zone. The Trans-Zagros Fault has caused several heavy earthquakes there. Between 6,000–8,000 fatalities were caused by the 7.3
Borujerd earthquake that occurred south of Borujerd on January 23, 1909. Later, the 6.1
Borujerd earthquake occurred on March 31, 2006.
References
{{coord missing, Lorestan Province
Plains of Iran
Landforms of Lorestan province