What a great presentation!

Find out who he bought house from

Expansion Tectonic theory deserves more attention. kzbin.info/www/bejne/bqLShaZtrJdlqJYsi=g2iXFlMscd7KCKAm

I have doubts about the dating of rocks, current dates are based on current conditions of today. Dinosaurs had to live in a gravity less than todays. Ect... geology has a good theory. But you have to be willingly ignorant to believe it.

America makes me sick , i want to leave , its a big problem

As soon as the first chunk of molten magma turned to Floating Rock. Bingo baby, plate tectonics began. Gravity, spin of the earth, and colliding chunks of goo.

Going back in earth time most of the way to when the moon was formed. All that heat and spin momentum really got the ball rolling 4? Billion years ago. The mantle so hot and fluid and turbulent must have quickly separated the iron down to the core. That must have created incredibly strong convection currents of dense iron flowing like vertical rivers, displacing lighter elements a couple thousand miles down. I would expect the extreme heat differential caused a density differential that caused lighter elements to flow like rivers upward. I would expect this caused convection loops which dragged a weak crust with it. This would be my definition of the beginning of plate tectonics by dragging the thin crust down with the convection loop leaving no trace on the surface. (The whole craton being subducted) The surprising thing is why instead of plume hot spots, we mainly have ring of fire linear boundaries such as mid Atlantic ridge. There must be a huge convection current dragging Americas and Europe apart. This convection current has a 3dimensional structure on a world scale. Can a lone plume (or two) drag by convection a whole intact continent from the Atlantic ridge to the west coast where the plume river is then subducted down with the plume coming from east Asia ring of fire? That’s probably why Nevada got stretched sideways the last 60 million years but Washington got rotated clockwise?

I got cher plate tectonics RIGHT HERE!!!!!

Dr. Condie, I regret that you did not see in 1977, i.e. would not see, and accept the geology of the Sangre de Cristos that I mapped and interpreted for my New Mexico Tech PhD Thesis the way I did. I now know that you know that I was correct in my hypotheses. Dave Mathewson

Spinel is a beautiful cat!

Just watched Vanity Fair and found this guy super interesting.

What amazes me is the fact that after so many mass extinctions and major climate changes in pre human times they still can get away with blaming mankind for the current situation. We currently have a volcanoes spewing tons of CO2 into the air and it won't surprise me if they try to blame it on cars.

😒 pr໐๓໐Ş๓

Nice presentation. I really wish I could have seen the sldes

Very nice Sir

👏👽👏👽👏👽 Mark Panning

wow.. thanks for uploading.

Excellent presentation Jamie! Glad I just completed a course in geochemistry.

Excellent presentation!

I enjoyed this thought provoking lecture. Those interested in finding out more about Dr Iacovino's volcanology related research can visit her website. www.kaylaiacovino.com/my-research/

As a graduate of the Department of Geology and Geophysics, I want to send a personal "Welcome" to Dr. van Dam. She will help to further enrich an already great department. I taught for many years at the University of Colorado, where she received her Ph.D., and I know that is an equally fine program. Best wishes to you Dr. van Dam.