Bruce Spur (also known as Banka Brus or Bruce Rise) is an undersea

spur A spur is a metal tool designed to be worn in pairs on the heels of riding boots for the purpose of directing a horse or other animal to move forward or laterally while riding. It is usually used to refine the riding aids (commands) and to ba ...

off

Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest cont ...

. The name was approved by the

Advisory Committee for Undersea Features The United States Board on Geographic Names (BGN) is a federal body operating under the United States Secretary of the Interior. The purpose of the board is to establish and maintain uniform usage of geographic names throughout the federal govern ...

in September 1963. The Bruce Spur is divided into two distinct segments separated by The north-west trending Bruce Canyon. The eastern rise reach up to below sea level and is bounded by steep slopes to the east and north. The western rise reaches and is bounded by more gently dipping slopes. The western rise probably formed during the rifting between India and Australia during the Early Cretaceous, while the eastern rise probably formed during the break-up between Australia and Antarctica in the Late Cretaceous. The western part of the Bruce Spur was conjugate to Gulden Draak Knoll, now located on the western margins of the Perth Abyssal Plain, before the break-up between India, Australia, and Antarctica. Greater India and the

Batavia Knoll Batavia may refer to: Historical places * Batavia (region), a land inhabited by the Batavian people during the Roman Empire, today part of the Netherlands * Batavia, Dutch East Indies, present-day Jakarta, the former capital of the Dutch East In ...

(north of Gulden Draak) rifted from the

Naturaliste Plateau The Naturaliste Plateau is one of several large submarine plateaus extending from Western Australia into the Indian Ocean. It is a rectilinear plateau that covers an area of 90,000 square kilometres. Its width is about east-west and north-so ...

and Gulden Draak rifted from the western Bruce Spur about 127 Ma. Continental rifting continued between the Bruce Spur and the Naturaliste Plateau for some 45 Ma after India broke off together with the two knolls. This rifting ended with onset of seafloor spreading between Australia and Antarctica around 83 Ma.

References

; Notes * ; Sources * Ridges of Antarctica Landforms of Wilkes Land {{WilkesLand-geo-stub