By which type of plate boundary the himalayas was formed in the tertiary period
Answers
Alfred Wegener, a German meteorologist, coined the “Theory of Continental Drift” which explains the first ideas about Pangea, tectonic plates, and the thought that continents were moving away from or closer to each other. This theory illustrates the origin of the Himalayas. About 225 million years ago, India was a large island situated off the Australian coast, and a vast ocean (called Tethys Sea) separated India from the Asian continent. When Pangaea broke apart about 200 million years ago, India began to move northward. About 80 million years ago, India was located roughly 6,400 km south of the Asian continent, moving northward at a rate of about 9m a century. When India rammed into Asia about 40 to 50 million years ago, its northward advance slowed by about half. The collision along with the decrease in the rate of plate movement is interpreted to mark the beginning of the rapid uplift of the Himalayas.
All of the Tethys Ocean floors were not completely subducted; most of the thick sediments on the Indian margin of the ocean were worn out and accreted onto the Eurasian continent in what is known as an accretionary wedge. These scraped-off sediments from the Himalayan mountain range. The rate of northward drift of the Indian continental plate slowed to around 4-6 cm per year. This slowdown is interpreted to mark the beginning of the collision between the Eurasian and Indian continental plates, the closing of the former Tethys Ocean, and the initiation of Himalayan uplift.
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The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today.