Porak
Encyclopedia
Porak is a stratovolcano
located in the Vardenis
volcanic ridge about 20 km (12 mi) SE of Lake Sevan
at the border of Armenia
and Azerbaijan
. The volcanic field
straddles the border, and lava flows extend into both countries. The flanks of the volcano are dotted with 10 satellite cone
s and fissure vents.
Stratovolcano
A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...
located in the Vardenis
Vardenis
Vardenis .The town of Vardenis occupies the south-eastern corner of Gegharkunik province of the Republic of Armenia. The town is located in the valley of the Masrik river, on the territory of the Masrik artesian basin at a height of 1943 meters above sea level. It is 170 km from the capital...
volcanic ridge about 20 km (12 mi) SE of Lake Sevan
Lake Sevan
Lake Sevan is the largest lake in Armenia and the Caucasus region. It is one of the largest high-altitude lakes in the world.Lake Sevan is situated in the central part of the Republic of Armenia, inside the Gegharkunik Province, at the altitude of 1,900m above sea level...
at the border of Armenia
Armenia
Armenia , officially the Republic of Armenia , is a landlocked mountainous country in the Caucasus region of Eurasia...
and Azerbaijan
Azerbaijan
Azerbaijan , officially the Republic of Azerbaijan is the largest country in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern Europe, it is bounded by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west, and Iran to...
. The volcanic field
Volcanic field
A volcanic field is an area of the Earth's crust that is prone to localized volcanic activity. They usually contain 10 to 100 volcanoes, such as cinder cones and are usually in clusters. Lava flows may also occur...
straddles the border, and lava flows extend into both countries. The flanks of the volcano are dotted with 10 satellite cone
Satellite cone
A parasitic cone is the cone-shaped accumulation of volcanic material not part of the central vent of a volcano. One forms by eruptions from fractures on the flank of the volcano. These fractures occur because of the flank of the volcano is unstable...
s and fissure vents.