GeologyRocksMiocene cooling
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Have you got your geological
Sun, 03/03/2013 - 23:01Have you got your geological periods right?
It's true that the raising of the Himalayas and Tibetan Plateau caused a change in weather pattern and produced the monsoons. But in fact India crashed into Asia raising the Himalayas about 40 million years ago, having 'raced' across the Thythus Sea (now the Indian Ocean) from what we call Antarctica today at around 20 cms a year. It bulldozed the sea bed in front of it which is why sea shells are found at high altitude in the Himalayas.
The Himalayas and Tibetan Plateau cause the north east winds to rise over the vast coldness and this precipitates as monsoons over the southern flanks of the Himalays and the northern part of the Indian sub continent.
Rainfall, as I am sure you know, is measurable. So I'm not sure what that last question is getting at.
John
“Civilisation exists by geological consent, subject to change without notice.” - Will Durant
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Miocene cooling
Submitted by allen98 on Sun, 03/03/2013 - 18:01.Hey everyone,
Im doing a school project and im trying to make sense of the cooling between the early and middle miocene but im getting confused on what factors are currently believed to have caused it and how they interact....so here are my thoughts/questions...
1) I have read in some papers that it is believed that Tibet was at modern altitude by 15 Mya….but the S.E Asian monsoon intensified at 8 mya. Why did it take 7 mya years to intensify?
2) To what extent does the modern monsoon affect the climate today and how?
3) How can we measure this?
Any thoughts, knowledge, papers that may help, advice is greatly appreciated!
Thank you....