The Iranian plateau or Persian plateau is a geological feature spanning parts of West Asia, Central Asia, and South Asia. It makes up part of the Eurasian Plate, and is wedged between the Arabian Plate and the Indian Plate. The plateau is situated between the Zagros Mountains to the west, the Caspian Sea and the Köpet Dag to the north, the Armenian Highlands and the Caucasus Mountains to the northwest, the Strait of Hormuz and the Persian Gulf to the south, and the Indian subcontinent to the east.
As a historical region, it includes Parthia, Media, Persis, and some of the previous territories of Greater Iran. The Zagros form the plateau's western boundary, and its eastern slopes may also be included in the term. The Encyclopædia Britannica excludes "lowland Khuzestan" explicitly and characterizes Elam as spanning "the region from the Mesopotamian plain to the Iranian plateau".
From the Caspian in the northwest to Balochistan in the southeast, the Iranian plateau extends for close to . It encompasses a large part of Iran, all of Afghanistan, and the parts of Pakistan that are situated to the west of the Indus River, covering an area of some . In spite of being called a plateau, it is far from flat, and contains several mountain ranges; its highest point is Noshaq in the Hindu Kush at , and its lowest point is the Lut Desert to the east of Kerman, Iran, at below .
Geology
In geology, the plateau region of Iran primarily formed from the accretionary Gondwanan terranes between the Turan platform to the north and the Main Zagros Thrust; the suture zone between the northward moving Arabian plate and the Eurasian continent is the Iranian plateau. It is a geologically well-studied area because of general interest in continental collision zones, and because of Iran's long history of research in geology, particularly in economic geology (although Iran's major oil reserves are not in the plateau).
Geography
The Iranian plateau in geology refers to a geographical area north of the great folded mountain belts resulting from the collision of the Arabian Plate with the Eurasian Plate. In this definition, the Iranian plateau does not cover southwestern Iran.
The plateau extends from East Azerbaijan Province in northwest of Iran (Persia) all the way to Afghanistan and Pakistan west of the Indus River. It also includes smaller parts of the Republic of Azerbaijan, Iraqi Kurdistan, and Turkmenistan.
The Northwestern Iranian plateau, where the Pontic and Taurus Mountains converge, is rugged country with higher elevations, a more severe climate, and greater precipitation than are found on the Anatolian Plateau. The region is known as the Anti-Taurus, and the average elevation of its peaks exceeds . Mount Ararat, at 5,137 meters (16,854 ft) the highest point in Turkey, is located in the Anti-Taurus. Lake Van is situated in the mountains at an elevation of 1,546 meters (5,072 ft).
The headwaters of major rivers arise in the Anti-Taurus: the east-flowing Aras River flows into the Caspian Sea, and the south-flowing Euphrates and Tigris join in Iraq before flowing into the Persian Gulf. Several small streams that flow into the Black Sea or landlocked Lake Van also originate in these mountains. The Indus River begins in the highlands of Tibet and flows the length of Pakistan almost tracing the eastern edge of the Iranian plateau.
Southeast Anatolia lies south of the Anti-Taurus Mountains. It is a region of rolling hills and a broad plateau surface that extends into Syria. Elevations decrease gradually, from about 800 meters (2,600 ft) in the north to about 500 meters (1,600 ft) in the south. Traditionally, wheat and barley are the main crops of the region.
Mountain ranges
The plateau's mountain ranges can be divided into five major subregions: