Bus-Obo

Bus-Obo is a 1162 m high cinder cone in Mongolia. The 90 m high cone is formed by basaltic rocks. It may be of Pleistocene or Holocene age.

It is located within a Caledonian orogenic belt in Mongolia, in the Middle Gobi area. A low velocity zone in the mantle is associated with Bus-Obo. Other Pliocene to Pleistocene age lava flows and craters are found within the adjacent Orchon valley, their relationship to this cone is unknown.