Is Australia pushing India?
- busterwasmycatLv 76 months agoFavorite Answer
No, and it appears that Australia and surrounding ocean is moving separately from India and surrounding ocean (90 East Ridge seems to be a tear zone between the two different parts of the once-unified plate system) India and Australia have been moving together (neither doing the actual pushing) but now the motions are diverting. Apparently. The hotspot system is definitely part of the process.
- poldi2Lv 76 months ago
No, they are not in contact.
- Anonymous6 months ago
Until roughly 140 million years B.C., the Indian Plate formed part of the supercontinent Gondwana together with modern Africa, Australia, Antarctica, and South America. Gondwana broke up as these continents drifted apart at different velocities, a process which led to the opening of the Indian Ocean.
In the late Cretaceous, approximately 100 million years B.C. and subsequent to the splitting off from Gondwana of conjoined Madagascar and India, the Indian Plate split from Madagascar. It began moving north, at about 20 centimetres (7.9 in) per year, and is believed to have begun colliding with Asia as early as 55 million years B.C., in the Eocene epoch of the Cenozoic. However, some authors suggest that the collision between India and Eurasia occurred much later, around 35 million years B.C.. If the collision occurred between 55 and 50 million years B.C., the Indian Plate would have covered a distance of 3,000 to 2,000 kilometres (1,900–1,200 mi), moving faster than any other known plate. In 2012, paleomagnetic data from the Greater Himalaya was used to propose two collisions to reconcile the discrepancy between the amount of crustal shortening in the Himalaya (~1,300 kilometres or 800 miles) and the amount of convergence between India and Asia (~3,600 kilometres or 2,200 miles). These authors propose a continental fragment of northern Gondwana rifted from India, traveled northward, and initiated the "soft collision" between the Greater Himalaya and Asia at ~50 million years B.C. This was followed by the "hard collision" between India and Asia occurred at ~25 million years B.C. Subduction of the resulting ocean basin that formed between the Greater Himalayan fragment and India explains the apparent discrepancy between the crustal shortening estimates in the Himalaya and paleomagnetic data from India and Asia. However, the proposed ocean basin was not constrained by paleomagnetic data from the key time interval of ~120 Ma to ~60 million years B.C. New paleomagnetic results of this critical time interval from southern Tibet do not support this Greater Indian Ocean basin hypothesis and the associated dual collision model.
In 2007, German geologists suggested that the reason the Indian Plate moved so quickly is that it is only half as thick (100 kilometres or 62 miles) as the other plates which formerly constituted Gondwana. The mantle plume that once broke up Gondwana might also have melted the lower part of the Indian subcontinent, which allowed it to move both faster and further than the other parts. The remains of this plume today form the Marion Hotspot (Prince Edward Islands), the Kerguelen hotspot, and the Réunion hotspots. As India moved north, it is possible that the thickness of the Indian plate degenerated further as it passed over the hotspots and magmatic extrusions associated with the Deccan and Rajmahal Traps. The massive amounts of volcanic gases released during the passage of the Indian Plate over the hotspots have been theorised to have played a role in the Cretaceous–Paleogene extinction event, generally held to be due to a large asteroid impact.
The collision with the Eurasian Plate along the boundary between India and Nepal formed the orogenic belt that created the Tibetan Plateau and the Himalaya Mountains, as sediment bunched up like earth before a plow.
The Indian Plate is currently moving north-east at five centimetres (2.0 in) per year, while the Eurasian Plate is moving north at only two centimetres (0.79 in) per year. This is causing the Eurasian Plate to deform, and the Indian Plate to compress at a rate of four millimetres (0.16 in) per year.
- Anonymous6 months ago
No, I don't think Australia would do that. they are a nice country, not a bully country