The Fraser Plateau is an intermontane plateau

Intermontane Plateaus

Physiographic regions of the U.S. InteriorSee:legendIn some places,high plateaus lie between the mountain ranges, for example,the plateau of Anatolia in Turkey and the plateau of Tibet.These are called "Intermontane plateaus"....

. It is one of the main subdivisions of the Interior Plateau

Interior Plateau

The Interior Plateau comprises a large region of central British Columbia, and lies between the Cariboo and Monashee Mountains on the east, and the Hazelton Mountains, Coast Mountains and Cascade Range on the west. The continuation of the plateau into the United States is known there as the...

 located in the Central Interior of British Columbia

British Columbia Interior

The British Columbia Interior or BC Interior or Interior of British Columbia, usually referred to only as the Interior, is one of the three main regions of the Canadian province of British Columbia, the other two being the Lower Mainland, which comprises the overlapping areas of Greater Vancouver...

, and includes the Cariboo

Cariboo Plateau

The Cariboo Plateau is a volcanic plateau in south-central British Columbia, Canada. It is part of the Fraser Plateau that itself is a northward extension of the North American Plateau...

 and Chilcotin Plateau

Chilcotin Plateau

The Chilcotin Plateau is part of the Fraser Plateau, a major subdivision of the Interior Plateau of British Columbia. The Chilcotin Plateau is physically near-identical with the region of the same name, i.e...

s and the adjoining Marble

Marble Range

The Marble Range is a small mountain range adjoining the Fraser River on the southwestern edge of the Cariboo Plateau of British Columbia. It has an area of 1,250 square kilometres and about 65 km NNW to SSE and about 20 km wide...

, Clear

Clear Range

The Clear Range is a small mountain range located in the angle of the Fraser and Thompson Rivers in south-central British Columbia. It has a small subdivision just northeast of that confluence named the Scarped Range...

 and Camelsfoot Range

Camelsfoot Range

The Camelsfoot Range is a sub-range of the Chilcotin Ranges subdivision of the Pacific Ranges of the Coast Mountains in British Columbia.* The range is c...

s on its southwestern edge. It is defined as lying between the Bonaparte River

Bonaparte River

The Bonaparte River is a tributary of the Thompson River, joining it at the community of Ashcroft, British Columbia. The river is about long, including the length of Bonaparte Lake...

 on its southeast, beyond which is the Bonaparte or Kamloops Plateau

Bonaparte Plateau

The Bonaparte Plateau, in British Columbia, Canada, is a subarea of the larger Cariboo Plateau which extends to the Quesnel River and lies between the Cariboo Mountains on the east and the Fraser River on the west. The Cariboo Plateau is a subarea of the Interior Plateau, aka the Fraser Plateau...

, part of the Thompson Plateau

Thompson Plateau

The Thompson Plateau, also known as the Okanagan-Thompson Plateau, forms the southern portion of the Interior Plateau of British Columbia, Canada, lying to the west of Okanagan Lake, south of the Thompson River and to the east of the Fraser River...

, and by a line formed by the Dean

Dean River

The Dean River is one of the major rivers of the Kitimat Ranges subrange of the southern Coast Mountains in British Columbia. It begins in the volcanic-shield Ilgachuz Range on the Chilcotin Plateau and winds north around the Rainbow Range to enter Dean Channel at the now-uninhabited, remote...

 and West Road River

West Road River

The West Road River or Blackwater River is a major tributary of the Fraser River, flowing generally north-eastward from the northern slopes of the Ilgachuz Range and across the Fraser Plateau in the Chilcotin region of central British Columbia, Canada...

s on its northwest (the Nechako Plateau

Nechako Plateau

The Nechako Plateau is the northernmost subdivision of the Interior Plateau, one of the main geographic regions of the Canadian province of British Columbia...

 lies to the north of the West Road). Also included in the Fraser Plateau are the Itcha

Itcha Range

The Itcha Range is a mountain range on the Chilcotin Plateau of the West-Central Interior of British Columbia, Canada. The range is located 25 miles northeast of Anahim Lake...

 and Ilgachuz Range

Ilgachuz Range

The Ilgachuz Range is a name given to an extinct shield volcano in British Columbia, Canada. It is not a mountain range in the normal sense, because it was formed as a single volcano that has been eroded for the past 5 million years. It lies on the Chilcotin Plateau, located some north-northwest...

s and the adjoining Rainbow Range

Rainbow Range (Coast Mountains)

The Rainbow Range, formerly known as the Rainbow Mountains, is a mountain range in British Columbia, Canada, located northwest of Anahim Lake...

, which adjoin the Coast Mountains

Coast Mountains

The Coast Mountains are a major mountain range, in the Pacific Coast Ranges, of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the Coast of British Columbia. They are so-named because of their proximity to the sea coast, and are often...

. The Fraser Plateau consists of basalt

Basalt

Basalt is a common extrusive volcanic rock. It is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet. It may be porphyritic containing larger crystals in a fine matrix, or vesicular, or frothy scoria. Unweathered basalt is black or grey...

ic lava of the Chilcotin Group, a group of related volcanic rocks that is nearly parallel with the Fraser Plateau.