The eastern rise reach up to 1,500 m (4,900 ft) below sea level and is bounded by steep slopes to the east and north.
The western rise reaches 2,000 km (1,200 mi) and is bounded by more gently dipping slopes.
[2] Greater India and the Batavia Knoll (north of Gulden Draak) rifted from the Naturaliste Plateau 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.