The Turgay Plateau ( kk, Торғай Үстірті, ''Torğai Üstırtı''; russian: Тургайское плато) is a plateau in north-west

Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbeki ...

, central

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

. It lies 200–300 m above sea level. It extends some 630 km north–south and 300 km east–west. It is bisected by the

Turgay Depression The Turgay Depression, also known as Turgay Basin, Turgay Trough, and Turgay Hollow ( kk, Торғай қолатый; rus, Тургайская ложбина), is a structural basin in Kazakhstan.

which is 800 km long and during the last ice age provided an outlet for the extinct

West Siberian Glacial Lake The West Siberian Glacial Lake, also known as West Siberian Lake (russian: Западно-Сибирское море) or Mansiyskoe Lake (russian: Мансийское озеро), was a periglacial lake formed when the Arctic Ocean outlets for ...

. Between the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

and

Eocene The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene' ...

, the plateau was part of the Turgai Straits or West Siberian Sea, an extension of the

Tethys Sea The Tethys Ocean ( el, Τηθύς ''Tēthús''), also called the Tethys Sea or the Neo-Tethys, was a prehistoric ocean that covered most of the Earth during much of the Mesozoic Era and early Cenozoic Era, located between the ancient continents ...

that separated Asia from Europe.

References

Bookrags.com description
Plateaus of Kazakhstan Plateaus of Asia {{Kazakhstan-geo-stub