I am not a geologist, Sonofason.
I have no reason to lie to you. I don't know you, I really don't care, because I know that you don't believe in anything I have to say, so I would recommend you read any books on geology of India, the Himalayas or Mount Everest, will tell you the history of geology in that region, including that of the tectonic plates.
My suggestion is to read any geological surveys, or scientific expedition to Everest, and avoid creationist's websites.
It has been years I've touched books on geology, and those books I do have, related to what I was studying in civil engineering, which don't require knowledge on tectonic plates. So I really can't recommend the books that I do have on geology.
But from what I understand and remember about the Australian tectonic (which include New Zealand and New Guinea, is moving at a rate of 5 cm (or more) a year.
From memory, Indian and Australia used to be one plate, until it split. It was joined in what is now south-eastern shore of India, and Western Australia coastline. I don't remember when it split, so I would have to look it up. About 70 million years ago, the Indian plate began moving northward, towards the Eurasian tectonic plate, and collided around 40 million years ago or less. I think it was moving at the rate of 14-16 cm per year, before actually contacting with the Eurasian plate, but the rate have dropped.
If you study geology at all, you would and should know, that two possible things could happen when two land masses (beside earthquakes):
- Where it collide and join, it could drop eventually into mantle layer.
- Or it could the land lift or fold upward, as it is the case with the Himalayas.
When the plates met (about 40 million years ago), the 2nd point, above, occurred, which caused the once seabed rose as it fold upward, and the Indian plate continue to push northward into what is now Hindu Kush and Tibet plateau, although it slow down somewhat to about less than 4 cm per year (could be less), and yet the plate continue to push the Himalayas northward, about 6 cm, and upward from about 5 mm per year.
Beside this, Genesis 7 indicated that the Ark landed on Mount Ararat, which is considerable lower than Everest by 3711 metres (or 12175 feet). If the rate of rise is consistent of 6 mm, then about 4300 years ago (rough estimate of the supposed biblical Flood), then Everest would have 28810 cm (288.1 m) lower than it is today. In another word, today Everest is 8848 me (29,029 ft; this is the current elevation accepted by both Nepal and China), but in 2300 BCE it would be 8560 m (or 28,084 ft) high.
And as to the marine life found on the limestone. That's because what was underwater of the ocean, was lift and folded upward. Those signs (fossils) of marine life is about 400 million years old, predated any human activity in this reason. It couldn't be caused by Noah's flood, because the Homo sapiens have only been around 200,000 years ago.
Another evidence(s) for Himalayas continually being push upward is the number of earthquakes, occurring Nepal, Tibet and northern India.
Do you think these seismic activities occurred for no reason?
It really doesn't take a genius to learn this.