I probably
shouldn’t post this because it may lose me a lot of friends but, what the heck….
If Donald
Trump is elected President in 2024, what country do you plan to move to? Give me your first three:. For instance here are mine:
1, Chile
2, New
Zealand
3, Canada
Remember,
you don’t have to sign your comments. Or
do you?
I have been
taking advantage of our sunny weather by half dozing on my back deck while listening
to various of Nick Zentner’s geology podcasts.
Much of the material is new to me: either ideas that have originated
since I stopped working in the Cordillera, or – sadly – stuff I may have known
a long time ago but have thoroughly forgotten!
Either way, it has been useful, restful, and fun.
But I have a
suggestion or maybe it should be called a question. I notice that terrane maps for the most part depict
a series of extremely elongate map units.
Most, if not all, are very much longer (NW/SE) than they are wide. Obviously, some exotic material is highly
attenuated at origin: hotspot tracks for instance. However, some definitely are not; for example
many oceanic plateaus as well as various chunks of detached continental crust
such as are found between Australia and southern Asia. And how about Madagascar?
So, my question
or perhaps more accurately speculation: are we paying too little attention to
what I will call “post-docking attenuation”?
After all, interaction of various oceanic plates with western North
America has had a northward element since way back in the Mesozoic. I can visualize roughly equant exotic
terranes getting “all smeared out” by dextral faulting after they are added to
North America. Seems likely to me. What do you think?
